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How SaaStr Fund-Backed RevenueCat Went from a $1.5M Round at $7M Valuation in 2018 to $500M+ Today

SaaStr

When SaaStr Fund made the first investment in RevenueCat back in 2018, nobody could have predicted that this “simple API for managing in-app subscriptions” would become the infrastructure powering 33% of all mobile subscription apps and reach a $500M valuation in 2025. The SaaStr Fund Thesis: Mobile Subscriptions Will Explode.

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6 Of The Most Common Mistakes I See First Time SaaS Founders Make

SaaStr

Here’s what I see most often, the Top 6 Mistakes First Time SaaS Founders Make: Incomplete understanding of business model, and how it will scale. Basically I only invest in first-timers. But they also make mistakes we tend not to make with experience. First-timers do just as well, if not better, than second-timers.

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How to Avoid a Bad VC Investor with SaaStr CEO and Founder Jason Lemkin

SaaStr

We’re obviously written up a lot about Fundraising and Investing here on SaaStr.com, but time and time again, SaaStr CEO and Founder Jason Lemkin has seen so many Founders sign a bad term sheet based on gut instinct, VC celebrity or vibes, and while that may be fine, it’s not enough.

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HubSpot Co-Founder and Chairman Brian Halligan on SaaS Markets, Board Meetings, and AI’s Impact

SaaStr

Engineering resources: With thousands of engineers, companies like HubSpot can make substantial AI investments when they choose to 3. The Future of AI in Customer Support While many vendors are achieving similar baseline results with AI customer support, Brian believes we’re still early in unlocking its full potential.

AI
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MongoDB at $2B+ ARR: 5 Epic Learnings from Q1 2026 That Every B2B Leader Should Study

SaaStr

They engineer business models that deliver both. free cash flow in one quarter Capital Allocation: Returning cash while investing in growth The Meta-Lesson: The best SaaS companies don’t “grow up” and become boring. They become MORE impressive as they scale.

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Top 10 Interesting Learnings From Figma’s IPO Docs … That You May Have Missed

SaaStr

and strong unit economics … Figma’s IPO filing also reveals fascinating insights about the future of software creation, team collaboration, and platform business models. Beyond the obvious metrics of explosive revenue growth (48% YoY at almost $1B ARR!!) Here are the hidden gems: 1.

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How 1,000+ B2B Startups Are — And Aren’t — Growing. The Real Data.

SaaStr

Growth rates are normalizing, companies are focusing more on profitability, and the market is rewarding sustainable business models over growth-at-all-costs.

B2B