# Stimuli - Hypertrophy Tracker — Muscle Growth Workout Planner > Muscle Growth Workout Planner (iPhone/iPad app by Stimuli Fitness Pty Ltd.) - Source: https://appshunter.io/ios/app/stimuli-hypertrophy-tracker/id6771212131 (this page in markdown: same URL + `.md`) - Developer: [Stimuli Fitness Pty Ltd](https://appshunter.io/developer/1896774753) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.0 · 37 MB - Languages: American English - Released: 2026-09-03 - Data updated: 2026-10-07 - User reviews in markdown: https://appshunter.io/ios/app/stimuli-hypertrophy-tracker/id6771212131/reviews.md ## What is Stimuli? Most trackers treat every set the same. Stimuli is a hypertrophy training app that scores the real muscle-building work in each set you log, tracks how recovered every muscle is, and builds programs that progress with you. Train with intent, and know whether your training is working. SCORE EVERY SET Log weight, reps, and RIR (in 0.5 steps) and Stimuli scores the stimulus each set delivers to every muscle it trains, not just the ones in the exercise name. Rows credit your traps. Belt squats spare your lower back. The model knows the difference. SEE RECOVERY, PER MUSCLE A full-body muscle figure shows what is fresh, what is fatigued, and what is ready to train again, derived from the work you have actually logged. PROGRAMS THAT GROW WITH YOU Generate a program with AI that matches your schedule, equipment, experience, and muscle priorities, or build your own from scratch. Weekly progress keeps your plan honest, and targets update from your logged performance. KNOW YOUR NUMBERS Estimated 1RM trends per exercise, weekly volume per muscle, and session summaries show trajectory, not just history. Deload guidance is grounded in a sustained decline in your strength trend, never guesswork. BUILT FOR THE GYM FLOOR Fast set logging, rest timers, per-exercise technique cues with illustrations, bodyweight and weighted movements handled properly, kg and lb support, and history synced across your devices. Available in 13 languages. YOUR DATA, YOURS Your training history and analytics stay yours to browse even if your subscription ends, and you can delete your account, and everything with it, right from Settings. STIMULI PRO Stimuli runs on a Stimuli Pro subscription. Start with a free trial and get the full app: live workout sessions, AI program generation, per-muscle recovery, and all your analytics. Choose monthly or yearly. The subscription auto-renews until cancelled, and you can cancel anytime in your App Store account settings. Terms of Use: https://stimulifitness.com/terms Privacy Policy: https://stimulifitness.com/privacy ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Stimuli Pro Monthly | $9.99 | per month | | Stimuli Pro Annual | $79.99 | per year | ## Version history (last 5 releases) ### 2.31 — 2026-10-05 Minor bug fixes. ### 2.3 — 2026-09-26 Stimuli 2.3 adds Recoverable volume: an estimate, built from your own training, of how much work each muscle can recover from in a week. RECOVERABLE VOLUME A new chart on the Progress tab draws the most sets, and the most Effective Work, each muscle can recover from in a week, then lays what you actually did over it. The floor marks the least that still grows muscle. The By muscle page ranks your major movers by how close each one sits to its limit. The chart unlocks after about six weeks of logged training, and a new Recoverable Volume guide explains how it works. TARGETS THAT FIT YOU Weekly set targets now adjust to you. Once Recoverable volume unlocks, each muscle's targets rescale to your own estimate. New AI programs start near the volume you already train and fit the days and session length you set. The Week tab, the muscle figure and the program page all read the same targets, and program bars show sets delivered against target. WEEKLY COACHING FOR ANY PROGRAM Sunday revisions now work on whatever program is active, including one you built yourself. Review each change, keep the ones you want, and skip the rest. ALSO IN THIS UPDATE - Swipe a set row left to remove it. - Day chips on each program in your library open a training day directly. - Daily check-ins now count even when you leave every slider where it is, which helps calibrate your recoverable volume. - A redesigned setup for new accounts. ### 2.2 — 2026-09-25 Stimuli 2.2 adds Recoverable volume: an estimate, built from your own training, of how much work each muscle can recover from in a week. RECOVERABLE VOLUME A new chart on the Progress tab draws the most sets, and the most Effective Work, each muscle can recover from in a week, then lays what you actually did over it. The floor marks the least that still grows muscle. The By muscle page ranks your major movers by how close each one sits to its limit. The chart unlocks after about six weeks of logged training, and a new Recoverable Volume guide explains how it works. TARGETS THAT FIT YOU Weekly set targets now adjust to you. Once Recoverable volume unlocks, each muscle's targets rescale to your own estimate. New AI programs start near the volume you already train and fit the days and session length you set. The Week tab, the muscle figure and the program page all read the same targets, and program bars show sets delivered against target. WEEKLY COACHING FOR ANY PROGRAM Sunday revisions now work on whatever program is active, including one you built yourself. Review each change, keep the ones you want, and skip the rest. ALSO IN THIS UPDATE - Swipe a set row left to remove it. - Day chips on each program in your library open a training day directly. - Daily check-ins now count even when you leave every slider where it is, which helps calibrate your recoverable volume. - A redesigned setup for new accounts. ### 2.1 — 2026-09-22 Stimuli 2.1 • Daily recovery check-in: tell the app how each muscle feels and it tunes today's recommendations. • Week-one baseline: new users get a calibrated recovery picture from day one. • Weekly AI coaching, redesigned: review each suggested change, keep what works, skip what doesn't. Opt out any time in Settings > AI coaching. • Per-exercise rest timers. • Help us improve: send feedback straight from Settings. • Recovery curve tuned so "ready" and "fresh" mean what they say. ### 2.0 — 2026-09-21 Weekly Program revisions, ease of use features and bug fixes. ## Apps similar to Stimuli | App | Rating | Price | Category | | --- | --- | --- | --- | | [Peak Height: Grow Taller](https://appshunter.io/ios/app/peak-height-grow-taller/id6752793377) | 4.5 (45) | Free | Health & Fitness | | [Stamurai: Stuttering Treatment](https://appshunter.io/ios/app/stamurai-stuttering-treatment/id1488071175) | 4.7 (805) | Free | Health & Fitness | | [Club Lime Flex Gym Pass](https://appshunter.io/ios/app/club-lime-flex-gym-pass/id1658456599) | 4.0 (13) | Free | Health & Fitness | | [Club Lime - 24/7 Gym Access](https://appshunter.io/ios/app/club-lime-247-gym-access/id1474760146) | 4.6 (36) | Free | Health & Fitness | | [BetterTogether: Weight Loss](https://appshunter.io/ios/app/bettertogether-weight-loss/id1503465416) | 4.7 (7,806) | Free | Health & Fitness | | [Fitness First Australia](https://appshunter.io/ios/app/fitness-first-australia/id1575821516) | 1.0 (2) | Free | Health & Fitness | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-07.*