Genuinely Free 75-Hard-Style Fitness Challenge Tracker, After Forced Paywalls Tanked The Apps People Actually Tried
The Her 75 app rocketed into the App Store Health top 10 in early May 2026 then dropped 67 spots in three days after it forced a subscription screen before users could do anything, with reviewers calling it a glorified checklist behind a $15/month wall. Hard-challenge trackers (75 Hard and similar) are either bait-and-switch paywalled or barely functional. The opportunity is a challenge tracker whose core daily logging is permanently and honestly free, monetized only by genuine extras.
The Her 75 crash is the whole lesson: users didn't hate paying, they hated paying before the app proved it works. Ship the full daily-tracking loop free forever and charge for social accountability or coaching. In a category this copyable, the trust you bank by not pulling the paywall trick is the entire moat.
landscape (3 existing solutions)
Challenge-tracker demand is strong enough to send apps into the App Store top 10, but every option either paywalls the basics or isn't purpose-built, leaving the honest-free-tier lane wide open.