10 Best SaaS Growth Agencies in 2025
SaaS growth agencies are specialist marketing partners that help tech companies acquire and retain customers via validated growth loops.
But they’re not just another vendor.
They act as an extension of your team, blending data-driven marketing, product-led experiments, and revenue orchestration to move key metrics (e.g., MRR, LTV, and CAC) rather than just website traffic or social media engagement.
SaaS growth agencies offer services like growth strategy and roadmaps (i.e., GTM, funnel design, north-star metrics), paid media, SEO, founder-led content marketing, CRO, A/B tests, and analytics set-up.
Ten of the top SaaS growth agencies are the following:
Restartt
Bay Leaf Digital
Kalungi
SimpleTiger
House of Growth
JourneyEngine
42DM
Stratabeat
RevvGrowth
New North
To choose the best SaaS growth agency for your needs, I considered the following criteria when evaluating vendors:
Industry experience, results and clients the agencies have worked with, especially the operators with whom you’ll be working.
Overall approach to B2B SaaS growth and service lines that they offer.
Sales and marketing tech stack and how exactly they are using it (If I were you, I’d ask them to show you sample workflows).
Alignment with your GTM team: How exactly is the agency going to work alongside your team?
The metrics that they measure to evaluate success.
Cost structure, contract flexibility and the length of the proposed contract.
Culture-fit: Often overlooked, you want to work with an agency that subscribes to your work culture, including responsiveness, SLAs, and your weekend work policy.
In this guide, I’ll go through the 10 best SaaS growth agencies in 2025 that can help you build out your growth loops and scale your MRR.
Disclaimer: The information about these agencies is valid as of 24th of September, 2025. If you find any inaccuracies or misrepresentations of your brand, feel free to let us know, and we will make the necessary adjustments.
1. Restartt
Restartt is a B2B SaaS growth agency that combines signal-based outbound, founder-led content and paid media to help you go from traction to scale.
Founded by ex-SaaS founders who have exited and then gone on to work with 100+ SaaS brands combined, our A-player operators will help you plan, build, and optimize your acquisition growth loop.
Restartt works with scale-ups and mature SaaS brands that need a complete restart of their GTM motion and are not willing to wait for 9-12 months before they can hire and ramp in-house GTM hires.
But what really makes Restartt stand out from the other agencies and be the best SaaS growth agency on the market is that:
You’ll work directly with the agency owners, John Ozuysal & George Chasiotis, who have built and scaled VC-backed start-ups and marketing agencies and have worked with 100+ SaaS companies combined.
We’ll work to nail that one growth channel first before the second, instead of spreading the resources too thin. Our philosophy is that this one growth channel needs to be easy to test out, easy to turn off, ROI positive, predictable, and scalable.
Our team will not provide you with flashy decks without execution. We will plug into your Slack, stay synced, and act like a part of your GTM team.
We help your founders or executives show up with real POV, engage the right accounts, and turn LinkedIn attention into momentum your team can feel.
We focus on message-market fit first by identifying your segments, running cold outbound tests, sending emails with different messages, and seeing which ones resonate with your ICP.
Services:
Paid Media: We’ll set up (or audit) your analytics setup, ad campaign setup, help you build out your ad creatives design, and handle ad copywriting.
Signal-Based Outbound: Restartt plans, builds, and optimizes for your GTM infrastructure, including setting up your website, external, and engagement signal infrastructure, as well as building and maintaining Clay webhooks to be used as signal databases.
Founder-Led Content: We will work directly with your founder to audit their LinkedIn profile, set up a monthly founder interview, and then write up and post 3x posts from their profile.
Minimum project size:
$6,500/month, which includes 1 service line and access to 3 A-player operators.
Note: We’ll not lock you into a 12-month contract, and you’ll always have the opportunity to choose the service lines that you want to invest in.
2. Bay Leaf Digital
Bay Leaf Digital is a Texas-based growth marketing agency that only works with B2B SaaS agencies.
The agency works with tech companies of all maturity stages and combines SEO, PPC, content creation, and influencer marketing to attract high-value clients.
Bay Lead Digital is metrics-driven and data-centric, which is why companies like MeazureUp, Kabbage, and IRS Solutions choose to work with them.
What stood out to me about the agency is that it emphasizes the importance of positioning and product-market fit, and starts growth work there.
Services:
PPC and retargeting to target prospects at all levels of the buying journey for both lead generation and brand awareness.
Managed CRO, maintenance and custom development to help you optimize your conversion rates.
SEO and GEO services that will help you show up on both Google and generative AI search results.
Social media marketing to help you build up your brand.
Minimum project size (Based on Clutch):
$10,000 with a reported average hourly rate of $150 – $199/hr.
3. Kalungi
Kalungi is a full-service B2B SaaS marketing agency that has a growth-as-a-service model to help tech brands scale.
The agency works primarily with SaaS brands with a defined product-market fit to act as their full-service team, coach, or GTM strategy auditor.
Kalungi can execute integrated demand generation programs across all funnel stages, including ABM, content marketing, SEO, paid media, CRO, and analytics.
But what really separates Kalungi from the other agencies is that they provide seasoned SaaS marketing leadership, such as fractional CMOs and teams on demand.
Services:
ABM services to help you target and convert high-intent accounts with personalized messaging.
Content marketing to help you build out your content engine that attracts, nurtures, and converts customers.
SEO services that help you increase your online visibility and drive growth through organic search.
Minimum project size (Based on Clutch):
$25,000 with a reported hourly rate of $100 – $149/hr.
4. SimpleTiger
SimpleTiger is a Florida-based SaaS marketing agency that grows tech businesses with SEO, PPC, and web design.
The agency prides itself on how fast it can get results for clients due to its combination of playbooks, proprietary AI tech, and principles.
SimpleTiger reverse engineers what works in your industry by conducting competitor analysis to get an idea of the content, keywords, and strategies that they use to dominate the vertical.
What stood out to me about Simple Tiger is their 80/20 principle, where they focus on the 20% of growth actions that will drive 80% of the results, so that SaaS brands can see quicker ROI.
Services:
SEO services that aim to drive qualified demos and trials to your SaaS business by creating high-converting content and strategic link building.
Paid media services, including PPC and lead generation ads across LinkedIn and Meta.
Web design services that will help you design, launch and maintain your website to better rank and convert visitors.
Minimum project size (Based on Clutch):
$5,000 with a reported average hourly rate of $200 – $300/hr.
5. House of Growth
House of Growth is a B2B SaaS growth agency that works with early-stage startups and VC-funded scale-ups to grow them via ROI-focused content sprints.
The agency was founded by an ex-SaaS founder who has built and exited his own SaaS companies and then went on to start HoG to help other SaaS brands scale like OptiMonk, UserGuiding, HockeyStack, and Warmly.
House of Growth starts off with a TAM analysis before building out your revenue-focused content roadmap.
What stood out to me about House of Growth is that it does not employ junior marketers, and, similar to Restartt, you’ll be working with the founder himself.
Services:
Revenue-focused content marketing that starts off with bottom-of-the-funnel (BOFU) content creation.
Onboarding flow optimization, where the agency evaluates your current onboarding flow and optimizes time-to-value for your users.
AI search optimization with their own GEO playbook, including researching how AI engines recommend solutions in your industry.
Minimum project size (Based on Clutch):
$10,000.
6. JourneyEngine
JourneyEngine is a Los Angeles–based growth marketing agency that only works with tech companies.
The agency partners with SaaS businesses like Workvivo and Smartly Talent to take full ownership of their SEO, content strategy, and analytics.
JourneyEngine helps you target in-market buyers with their blended inbound approach that combines paid social, paid search, SEO and digital PR to convert problem-aware and solution-aware customers.
What’s interesting about the firm is that they can craft you complete funnels, including working on ad creative, subdomains, landing pages, and nurture flows.
Services:
Content marketing services that help you establish thought leadership with article and video content.
ABM services that reach ICP-fit prospects with content that moves them.
Email marketing services, including support with onboarding, trial-to-paid sequences, and newsletters.
Website design, including UI layouts and custom website development (vibe-coded, according to them).
Minimum project size (Based on Clutch):
$5,000 with a reported average hourly rate of $150 – $199/hr.
7. 42DM
42DM is a B2B growth marketing agency that provides full-funnel growth support to SaaS companies.
The agency offers end-to-end services across inbound and outbound marketing and has worked with the likes of Lumin, Payoneer and Adwisely.
42DM works with SaaS brands of all maturity stages and combines content marketing with programmatic advertising.
But what really stood out to me about the agency is that they also specialize in MarTech and marketing automation (e.g., AI-powered analytics, lead tracking, and CRO tools) to maximize your funnel efficiency.
Services:
ABM services, including finding and converting leads with targeted campaigns.
Demand generation services, including building brand awareness and helping you shorten your sales cycles.
Inbound marketing services, including SEO, GEO, and content marketing.
Minimum project size (Based on Clutch):
$1,000 with a reported hourly rate between $50 – $99/hr.
8. Stratabeat
Stratabeat is a B2B marketing agency that combines SEO, content, and CRO to grow SaaS brands.
The firm analyzes visitor behavior and applies CRO recommendations so that content and design continually improve lead generation for clients like Freshworks, Intel and Appfolio.
Stratabeat evaluates your existing SEO strategy, creates content, and builds backlinks while optimizing your money pages for conversions.
What stood out to me about this agency is their neuroscience-based marketing approach, as they use advanced audience insight techniques for more targeted marketing and content-ICP fit verification.
Services:
B2B SEO and content marketing that helps you rank on Google and grow your pipeline.
Authority building & web design that helps you acquire high-quality backlinks and design user-focused websites to boost brand visibility and support conversions
CRO services that apply neuroscience principles, A/B testing, and UX improvements to turn your visitors into leads.
Minimum project size (Based on Clutch):
$5,000 with a reported average hourly rate of $150 – $199/hr.
9. RevvGrowth
RevvGrowth is a full-funnel growth marketing agency that specializes in AI-driven insights, automations and multi-channel engagement.
The agency combines demand generation, content marketing, and marketing automation to build your growth engine.
RevvGrowth starts off by assessing your existing channels, messaging, and tools to figure out what needs fixing and what can stay.
What separates the firm from the others for me is that they’ve put AI and humans in the right places.
The agency combines AI + human workflows for faster execution, less dashboard chaos, and better campaigns that learn and improve quickly.
Services:
Demand generation services that help you drive high-intent leads with SEO, LinkedIn Ads and Google Ads.
Marketing automation services, where the agency helps you automate lead nurturing and email flows.
1:1 ABM services, where they build hyper-personalized campaigns via LinkedIn ads, direct email, custom outreach, and custom landing pages.
Minimum project size:
$1,000, with the average hourly rate going between $50 - $99/hr.
10. New North
New North is a growth marketing agency that helps SaaS companies fill in the gaps of ABM, content, paid media, and reporting.
The agency combines content creation, paid media, ABM, and sales enablement to help you secure high-value deals.
The way they work is that they take you through their full-cycle growth process: from discovery and research to campaign execution and continuous optimization.
But what really differentiates them is their emphasis on transparency, as their pricing model is transparent (and it’s not based on hours worked), and they also provide clients with 24/7 access to a client portal with custom reports.
Services:
Managing PPC, display, and social ad campaigns to extend your reach and attract the right leads.
Producing blog posts, podcasts, videos, case studies, and other content to engage and educate your target audience.
ABM campaigns to reach high-value accounts via email, paid ads, and organic outreach.
Integrating data across all channels to continuously refine campaign performance.
Minimum project size:
$50,000.
What are the best SaaS growth agencies in the USA?
Some of the best SaaS growth agencies in the USA are the following:
Restartt specializes in signal-based outbound, 1:1 ABM, paid media and founder-led content. The agency works like an extension of your GTM team (owners work directly with you), focuses on predictable, testable channels and makes sure that every impression, click, and conversion actually moves the needle.
Kalungi offers fractional senior SaaS marketing leadership plus full funnel execution (ABM, content, SEO, paid media).
42DM combines end-to-end growth expertise with a MarTech-first approach, specializing in marketing automation, analytics, and lead tracking.
What are the best growth agencies for B2B SaaS?
The best B2B SaaS growth agencies should combine deep SaaS experience with revenue-focused playbooks (ABM, demand gen, CRO), be able to run product-led experiments, and measure success rather than vanity KPIs.
Therefore, some of the best growth agencies for B2B SaaS are the following:
Restartt: The agency designs and runs growth programs that blend paid, signal-based outbound, and founder-led content, all under one roof with no handoffs to junior marketers.
Kalungi offers fractional senior SaaS marketing leadership plus full funnel execution (ABM, content, SEO, paid media).
42DM combines end-to-end growth expertise with a MarTech-first approach, specializing in marketing automation, analytics, and lead tracking.
What are the best growth agencies for SaaS startups?
The best SaaS growth agencies for startups should be fast, experiment-driven, able to prioritize cheap/high-ROI channels, and be flexible on contract length so you can iterate quickly.
Thus, some of the best agencies to help a SaaS startup grow are the following:
Restartt: Built by former founders with extensive expertise in growing and exiting SaaS start-ups, the agency helps you validate your message-market fit and then builds your first growth channel.
House of Growth: A lean growth agency that is run by an ex-SaaS founder, focused on revenue-driven content sprints.
JourneyEngine: Blended inbound approach (paid social/search + SEO + digital PR) and full-funnel execution (landing pages, ad creative, and email nurture flows).
What are the best growth agencies for enterprise SaaS?
Some of the best growth agencies for enterprise SaaS businesses are the following:
Restartt: Helps enterprises run predictable, testable pilots that can scale into full enterprise ABM and revenue orchestration. Ideal for enterprises that are drowning in GTM bloat and want to hit the restart button on their GTM strategy without having to hire and ramp another GTM hire, and are looking for traction now and not in 9-12 months.
Stratabeat: Already experienced working with enterprise clients (Freshworks, Intel, Appfolio) and combines SEO, content and CRO with neuroscience-based audience insight techniques, which I find valuable when you need CRO for complex buyer journeys.
Kalungi: Provides fractional CMOs and enterprise-grade integrated demand programs (ABM, content, and analytics). I find the agency useful for enterprise teams that need strategic leadership plus hands-on execution.
How to choose a SaaS growth agency?
Choosing a SaaS growth agency is about matching their operating model and experience to your stage and growth goals.
When selecting a SaaS growth agency, you should consider the following:
Specialization: Find out if they are a growth company that focuses on outbound, inbound, PR, or analytics. Also, it’ll be good if you can figure out if the agency works with companies of your size.
Services offered: See what kind of growth service lines they provide, such as signal-based outbound, ABM, content, SEO, paid media, CRO, onboarding optimization, and automation.
Results: Ask for outcome-focused case studies that show business metrics and timelines, not only traffic or impressions. If I were you, I’d ask for examples from similar-stage companies.
Reviews: You should take into consideration the results and case studies not only of the growth agency itself, but also of the operators of your account.
Pricing and contract flexibility: Compare both the minimum retainers and contract lengths, typical project sizes, and whether the agency charges for media, software licenses, or only for work done.
Culture fit: Prioritize agencies that can plug in to your communication tools and work alongside your sales and marketing teams, as if you hired a GTM engineer. You wouldn’t want to chase the team over email or wait until the weekly catch-up to ask them a question.
Approach to growth: Ask the agency to see how they approach growth for a SaaS company in terms of how they select growth channels, how they validate messaging, and how they use your ICP insights into their campaigns.
Marketing and sales tech stack: Check whether the agency uses an internal or already purchased tech stack, or requires you to buy new platforms for them to start working. Keep in mind that having to purchase marketing and sales software can add up to your final costs.
What types of services do SaaS growth agencies offer?
Each SaaS growth agency offers different services based on its specialization and expertise.
Some common services SaaS growth firms offer are the following:
Growth strategy & roadmaps, including GTM design, north-star metrics, funnel design by agencies like Restartt and Kalungi.
Paid media and PPC, including ad campaign setup, creatives, LinkedIn/Google ads by agencies like Restartt, SimpleTiger, and New North.
SEO and revenue-focused content marketing, including long-form content, GEO/AI search playbooks, and link building by agencies like SimpleTiger, JourneyEngine, and House of Growth.
Founder-led content, including regular founder posts (i.e., work-in-public, personal stories, product updates, and success stories), founder interviews and LinkedIn profile audits by agencies like Restartt.
Signal-based outbound and ABM, which is targeted outreach using signal databases and personalization by agencies like Restartt, 42DM, and RevvGrowth.
CRO and onboarding optimization, which includes neuroscience UX, A/B testing, and optimizing time-to-value by agencies like Stratabeat and House of Growth.
Web design and landing page development, which are conversion-focused web builds by agencies like SimpleTiger, JourneyEngine, and Stratabeat.
How much does it cost to hire a SaaS growth agency?
Hiring a SaaS growth agency can cost between ~$1,000/month to $50,000+/month, depending on the agency and scope.
What drives price is typically the:
Scope and number of service lines.
Seniority of operators (e.g., working with founders vs junior staff).
Campaign complexity (e.g., enterprise ABM vs a single PPC channel).
Your media spend, as a lot of growth agencies will charge you a % of your paid media spend.
What is the difference between a SaaS growth agency and a SaaS marketing agency?
SaaS growth agencies are SaaS marketing agencies.
However, the main difference between SaaS growth agencies and SaaS marketing agencies is that SaaS growth agencies place a stronger emphasis on building validated growth loops and on business metrics (MRR, LTV, CAC), not just channel outputs.
On the other hand, marketing agencies might spread their services across top-of-the-funnel channels and campaigns (e.g., brand awareness advertising or social media management).
Apart from this, SaaS growth agencies will often work with your product and sales teams to:
Layer on product-led experiments.
Conduct signal-based outbound.
Work on optimizing your new customer onboarding to bring them to their ‘’aha’’ moment quicker.
Hit the restart button on your growth programs
Restartt offers the most efficient GTM team you’ll never build.
Our team of A-player operators designs and runs growth programs of signal-based outbound, paid media, and founder-led content with no handoffs to juniors.
If you don’t want to:
Find the right talent, as in-house GTM hires are expensive and time-consuming to ramp up.
Work with other old-school agencies and freelancers who will lose your high-intent prospects with their generic, unvalidated messages.
Drown in GTM bloat, always thinking about whether you should do podcasts, events, founder-led content, or LinkedIn Ads.
Then you can partner with a specialized SaaS growth agency run by operators who have built SaaS companies from zero to exit and have actually done this before for 100+ start-ups.
Book a call with me and let’s get started.