Developer Tools
Free, privacy-focused tools for developers
Screenshot Resizer
Resize screenshots for every iPhone and iPad size required by the App Store
Ad Profitability Calculator
Calculate ROAS for Meta and Apple Search Ads. See if your ads are profitable and simulate scenarios.
A/B Test Evaluator
Evaluate your A/B test results. See what's significant, what to ignore, and how much longer to run.
A/B Test Planner
Plan your A/B test. See how many days you need to detect meaningful lifts at your scale.