Every Experiment Kept Landing on the Same Devices: Hash Choice and Salt Position, Measured Across a Million IDs
On-device experiment assignment looked fine in isolation, then collapsed the moment two experiments ran side by side. Here is what one million IDs revealed about four hash functions, why the culprit was the concatenation order rather than hash quality, and the implementation I settled on, with the measured numbers.
Building a Rork A/B Testing Platform with GrowthBook and PostHog from Scratch
Drop Firebase and pair GrowthBook with PostHog to ship a production-grade A/B testing stack for your Rork apps. SDK wiring, edge evaluation on Cloudflare Workers, Bayesian statistics interpretation, and the operational pitfalls I learned the hard way.
Rork Max × RevenueCat Paywalls SDK: Remote Paywalls, A/B Testing, and Conversion Gains
A complete guide to integrating RevenueCat Paywalls SDK with Rork Max apps — enabling remote paywall updates and A/B testing without App Store reviews, with production-ready code examples and conversion optimization strategies.
Making Feature Flags Survive Production: Kill Switches and Gradual Rollouts in Rork Max
Wire Firebase Remote Config into a Rork Max app, then harden it: kill switches that work offline, stable bucket assignment for gradual rollouts, and a registry that keeps flags from turning into debt.
Maximizing Rork-Built App Revenue with App Store Connect's 100+ Metrics
A practical analytics workflow that narrows App Store Connect's 100+ metrics down to twelve revenue-critical signals, diagnoses funnel weaknesses, and pairs targeted Rork Max changes with Product Page Optimization A/B tests to grow ARPU, LTV, and retention.
Rork + Superwall: A/B Test Your Paywall to Boost Subscription Conversion
Learn how to integrate Superwall into your Rork app to A/B test paywall designs and increase subscription conversion rates. Covers SDK setup, campaign configuration, RevenueCat integration, and analytics — with working code examples.
Lifting AdMob Revenue Through UI Design and Rork
Lessons from running AdMob apps as an indie developer: how UI design alone can lift ad revenue. Covers high-revenue layouts in Rork, frequency-cap implementation, how consent (ATT/UMP) shapes eCPM, and a Firebase testing loop, with working code.
Paywall Optimization and Onboarding Design for Rork Apps — Free Trials, Conversion Psychology, and A/B Testing
A complete framework for maximizing Rork app subscription revenue. Covers free trial strategy, conversion psychology, paywall placement, and RevenueCat A/B testing to scientifically improve your paid conversion rate.
When Free Rork Users Become Paying Subscribers — Pricing and Paywall Lessons From an Indie Developer
Convert free Rork users into subscribers with pricing design, paywall timing, LTV/CAC and cohort analysis, and churn-prevention flows — grounded in hands-on indie experience and Rork + Stripe + PostHog implementation code.
Push Notification Masterplan for Rork Apps — Segmented Delivery, A/B Testing, and Automation Pipelines
An advanced guide to push notifications in Rork apps. Learn how to implement user segmentation, A/B testing, automated lifecycle pipelines, and retention-focused delivery strategies.
Rork Max: App Store Revenue Optimization Playbook 2026
Master StoreKit 2 advanced patterns, subscription tier design, A/B testing, and global pricing strategies. Learn data-driven revenue optimization with real-world modeling examples.