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Oliver Buchannon
Ivan Sparrow

co-founder of openchat, bootstrapped to $850k arr.

The Cal AI case study: a masterclass in leaving money on the table

Dec 10, 2025

•

4 min read

The Cal AI case study: a masterclass in leaving money on the table

Ivan Sparrow
Ivan Sparrow
Why I almost got fired for creatives that doubled revenue

Dec 3, 2025

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7 min read

Why I almost got fired for creatives that doubled revenue

Ivan Sparrow
Ivan Sparrow
My Approach to Apple Ads Optimization

Nov 26, 2025

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6 min read

My Approach to Apple Ads Optimization

Ivan Sparrow
Ivan Sparrow

google ads

+4

Apple Ads or Meta Ads: which channel is the best choice for your app?

Nov 19, 2025

•

5 min read

Apple Ads or Meta Ads: which channel is the best choice for your app?

A few thoughts on whether to start with organic growth or paid ads, and which source works better in practice.

Ivan Sparrow
Ivan Sparrow
Holiday Marketing for Mobile Apps: Boost your revenue from Black Friday to New Year

Nov 11, 2025

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7 min read

Holiday Marketing for Mobile Apps: Boost your revenue from Black Friday to New Year

The exact steps I’m taking right now to turn the next 2.5 months into the highest-grossing period of the year.

Ivan Sparrow
Ivan Sparrow

gaming

+2

From flat to 20x growth: how we unlocked $1.5m+ in extra ad revenue from the same audience

Nov 5, 2025

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4 min read

From flat to 20x growth: how we unlocked $1.5m+ in extra ad revenue from the same audience

What started as a small test turned into a full-scale experiment in ad monetization. And it all began with zero experience in ad monetization.

Ivan Sparrow
Ivan Sparrow

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