What's new.

Every release, in plain language. Newest at the top.

May 24, 2026

1.0 — Public launch

• Strength Phase, our flagship six-week program, is live on the App Store
• RIR-based weight selection picks the load for every working set automatically
• Exercise library at launch covers 200+ movements with technique cues
• Six-week mesocycle structure with accumulation, intensification, and a closing deload
• Deload weeks scheduled automatically at the end of each block

April 10, 2026

0.9 — Closed beta

• Closed beta opened to 200 testers across iOS
• Calibration flow finalized — first session now sets your starting loads from a short ramp test
• Progress charts and per-exercise history views added
• Rest timer redesigned with smart defaults per exercise type

February 1, 2026

0.5 — Internal alpha

• First working version of the adaptive engine — RIR feedback now drives the next session's loads
• 100+ exercises seeded into the library with full movement metadata
• Session player UI in alpha — tap to log, swipe to skip, RIR slider at end of set

October 2025

0.1 — Project kickoff

• Concept and architecture defined
• Programming logic prototyped in a spreadsheet, then ported to the engine
• Brand, type system, and design language settled

Have feedback or a bug to report? Email hello@checkfit.com.