Free Tools
The Sandbox
Small tools built from real mobile growth work. Use them to make better decisions faster.
ASA Budget Calculator
Calculate your ideal Apple Search Ads budget based on real benchmark data. Get CPI estimates, recommended daily spend, and break-even analysis.
Open toolA/B Test Duration Calculator
Find out how long to run your App Store experiments for statistically significant results.
Open toolSubscription LTV Calculator
Calculate your subscription app's lifetime value, net LTV after fees, and maximum CPA for profitable acquisition.
Open toolPaywall Benchmark Checker
Compare your trial start and conversion rates against real industry benchmarks for your category.
Open toolMetadata Compound Phrase Generator
See every keyword combination your iOS metadata generates. Find duplicates, dead weight terms, and hidden phrases you're indexed for but not tracking.
Open toolASA Campaign Audit Checklist
The same 30-point checklist I use with clients. Find budget leaks, fix conversion issues, and optimize your Apple Search Ads campaigns.
Open toolGoes well with these reads
What's a Good CPI for Apple Search Ads?
CPI benchmarks to pair with your budget calculations.
What's a Good TTR for Apple Search Ads?
TTR benchmarks by campaign type from 500+ audits.
App Store Conversion Rate Benchmarks
How your conversion rates compare by category.
ASO Fundamentals Guide
The practical guide to app store optimization in 2026.
Got a tool idea?
I build these based on real problems I see in mobile growth work. If there's a calculation or analysis you wish existed, let me know.