GTM Sauce

Sub Club by RevenueCat · 2025-12-10

Pivots, Funding, and Building Apps That Last – Greg Cohn, Burner

Greg Cohn (Ad Hoc Labs) on pivoting from the social calling app Wrangle to Burner, launching Burner as a $1.99 paid download with credits ($50K day one), raising angel and a ~$2M VC round, then converting to a breakeven/profitable business when Series A metrics weren't there. Covers moving from credits to subscriptions, harvesting high-intent search demand, self-selecting SKUs, making the free trial optional, a premium caller-lookup upsell, a white-label VPN inside Burner, failed standalone apps (Firewall, Dialed), faster paywall testing and plans to acquire complementary apps.

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18 tactics

Burner · B2C · second phone number app

Flood of calls and 10-100x the response of the old app; confirmed a real problem
“And then we were doing stuff like testing it by selling tickets on Craigslist. And we were posting fake ads for giving away flat screen TVs and things like that. We just get a ton of traffic.”
Workedvalidation
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

New York Times interview and a panel slot; $50K revenue on launch day
“We ended up with the New York Times interview and we ran back to our room, and we set up a war room and set up a launch page. We were capturing waiting lists, names, and we were on a panel.”
Workedpr-launchevents
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

About $50K revenue on launch day
“You could buy three, eight, 15 or 25 credits for different price points and then different configurations of phone numbers to extend them.”
Workedpricing
Sub Club by RevenueCat · 2025-12-10
“The thing we wanted to do was take the paid download off, right? Became a free download. We figured out the conversion math”
Unknownpricing
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Didn't scale without lots of capital; stayed a premium, paid-first app
“After a period of time, we were starting to run low on that cash and we had tried a lot of experiments, including trying to make a freemium business out of Burner.”
Failedpricingmarket-selection
Sub Club by RevenueCat · 2025-12-10

Ad Hoc Labs · B2C · privacy app studio

Breakeven or profitable for 6-8 years, grew past $10M a year
“It was clear we didn't have the metrics for it, right? And so, that's the ultimate test of whether you should raise VC today is at the end of that cycle, where you have the numbers to go raise a subsequent round and we didn't get there.”
Workedfinancing
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Biggest single jump in revenue in company history; subscriptions now 90%+ of revenue
“So, that was one of the biggest single step functions in our revenue growth in our history was the day we launched subscriptions, and it was also our first unlimited all you can eat.”
Workedpricingpaywall
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Fairly high churn from short-term users; founder now thinks credits might have fit them better
“But we did slowly deprecate credits on the back of launching subscriptions because our mindset at least originally was, well, we should move all of our users through a subscription model and the ones who have longer term intent will retain and the ones who don't will leave early. And so, as a consequence of that, we have reasonably high churn.”
Mixedpricingretention
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Several million downloads a year of high-intent users; press-driven users didn't convert
“People go into the app store, people go on to search engines and search for second phone number, temporary phone number, private phone number, Burner app by brand. And we're very good at finding that and harvesting that in terms of getting people to download the app.”
Workedasopaid-search
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Very popular and a driver of premium upsells; founder didn't expect it to win
“In our premium tier, we have the ability if someone calls you on your Burner and you don't recognize the phone number to do a lookup through the telephony system and make a pretty good guess of who that is, who that caller is. And that feature has been very popular.”
Workedupsell-expansionfeature-development
Sub Club by RevenueCat · 2025-12-10
“Well, I would say to date, we've mostly done that by presenting different SKUs and different bundles and letting people self-select.”
Unknownpricingpaywall
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Very positive A/B test result; no numbers given
“We recently tested making the free trial optional instead of default, and that was a very positive test for us, interestingly.”
Workedpaywallexperimentation
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Retains some users into a second number; 20-30% of new subs are returning users
“But using that as a way to say, "Well, you may be done with this transaction, but maybe you want a new number." And so, we do retain a certain number of people into a second shot there.”
Workedretentionproduct-activation
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

Drove a lot of premium-tier growth, but cost more to build than it should have
“So, that particular product we did with a partnership and it's a white label partnership as a provider.”
Workedupsell-expansionpartnerships
Sub Club by RevenueCat · 2025-12-10

Firewall · B2C · robocall blocking app

Neither got real traction; one was killed by an Apple feature
“We have Burner, it's our flagship app, but we also launched an app called Firewall and an app called Dialed to respectively do robocall blocking and business phone numbers. And neither one of those has worked at scale for us.”
Failedportfolio
Sub Club by RevenueCat · 2025-12-10

Burner · B2C · second phone number app

From 1-2 paywall tests a month to several times that; about 1 in 4-5 wins
“Biggest win in the past year, I mean, aside from launching premium full stop was definitely adding technology to increase our paywall testing speed.”
Workedexperimentationpaywall
Sub Club by RevenueCat · 2025-12-10
“So, balancing those things, really cohort LTV is probably the true north, but within that, you can't wait for those metrics to mature. So, you have to project based on things that are happening at day eight or day 30.”
Unknownanalytics-attributionexperimentation
Sub Club by RevenueCat · 2025-12-10
“So, yeah, we've been in a certain number of conversations to acquire apps.”
Unknownportfolioexit-ma
Sub Club by RevenueCat · 2025-12-10

Numbers mentioned

SubjectMetricValueQuote
Burnerprice
Paid download price at launch, including a free number for about seven days
USD 1.99/one-time“So, believe it or not, Burner was a paid download when it first launched, $1.99 to download it.”
Burnerrevenue
Revenue on launch day
USD 50K/day
approximate
“And when we launched, we had like $50,000 in revenue on the first day, right?”
Ad Hoc Labsfunding raised
Angel round target; not fully reached before launch
USD 500K
goal
“I think I was trying to raise a half a million. I didn't quite get there.”
Ad Hoc Labsfunding raised
VC round raised within about a year of launch
USD 2M
approximate
“we raised about a $2 million VC round within a year or so of that”
Burnerrevenue
First million-dollar year
USD 1M/year
approximate
“I think we had our first million dollar annual year at about two and a half years in.”
BurnerrevenueUSD 5M/year
approximate
“And then we had a $5 million a year by about five years in.”
Burnerrevenue
Reached a couple of years after $5M; today 'multiples of that'
USD 10M/year
approximate
“And it took another couple years to get to 10 million and now we're multiples of that today.”
Ad Hoc Labsprofitbreakeven or meaningfully profitable for 6-8 years while growing top line
approximate
“So, for six or eight years, we've been either breakeven or meaningfully profitable and while still also growing the top line”
Burnershare
Share of revenue from subscriptions (more than 90%); the remaining ~8-10% is credits, mostly subscribers topping up
90%
approximate
“So, today we have a business that's more than 90% subscription revenue, and the 10% or 8% or whatever that's credits is mostly existing subscribers topping up”
Burnercount
Subscription SKUs: monthly/annual x one-line/three-line x standard/premium
8 SKUs“And now today we have monthly one line, monthly three line, annual of both of those. And then we have that standard end premium. So, that's eight SKUs right there.”
Burnershare
Share of new subscriptions from returning (not first-time) subscribers
20–30%
approximate
“It's north of 20%. It's somewhere between 20% and 30%, and it's a very large number, right?”
Ad Hoc Labsteam size30 people
approximate
“We're about 30 people, and that's healthy, but it's a complex app.”
Burnerdownloadsseveral million per year
approximate
“we have several million people per year downloading at Burner, right?”
Burneractivity volume
Paywall test cadence before the new testing tooling; now 'a multiple of that'
1–2 paywall tests/month
approximate
“we were shipping one or two paywall tests a month and we're able to do a multiple of that today”
Burnershare
Paywall test win rate: one winner for every four or five tests
20–25%
approximate
“There's one winner for every four or five that we do.”