Ischys Workout Tracker vs RSTR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ischys Workout Tracker
This app allows users to quickly log gym sets, build routines, and track personal records entirely on their device. It features a rest timer that continues running even when the app is closed and integrates with Apple Watch for seamless workout management. Data is kept private and local, with options for importing and exporting workout history.
- Log sets in seconds
- Build and start routines
- Rest timer with Lock Screen support
- Automatic personal record tracking
- Apple Watch integration
- 100% on-device data storage
- Import/export workout history
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Ischys is a fast, private workout tracker for lifters. Every set, routine, and personal record lives entirely on your iPhone — no account, no cloud, no tracking. Your training data is yours. BUILT FOR THE GYM • Log sets in seconds — weight, reps, warmup, drop and failure sets • Build routines and start them in one tap, or freestyle an empty session • A rest timer that keeps running when you leave the app — right on your Lock Screen • Auto-fills your last session's weights and reps, so you're not retyping • Personal records tracked automatically: heaviest set, best volume, most reps APPLE WATCH • Start a workout on your phone and it runs on your wrist • Live heart rate and active calories during the session • Log sets, adjust rest, and end the workout from the Watch YOUR DATA, YOUR DEVICE • 100% on-device — no account to create, nothing uploaded, no analytics • Import your history from other apps (CSV) and export it any time as JSON • Optional Apple Health: save finished workouts and read your heart rate OPEN SOURCE Ischys is open source — see exactly what runs on your device at ischys.app.
RSTR
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RSTR is the simplest gym timer you'll ever use. Track your whole workout, your set time and your rest time with one tap. Tap to start a set. Tap again to rest. That's it. FREE • Workout timer, set timer and rest timer • One-tap switching between set and rest • Dark and Light themes RSTR PRO — one-time purchase, no subscription • Apple Watch app: run the whole workout from your wrist • Rest alerts with haptics • Your own preferred rest times • Live Activity on Lock Screen and Dynamic Island • Simple workout history • Follow System appearance No accounts. No tracking. No clutter. Just your time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rstr-support.alman9oorii.chatgpt.site/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Ischys Workout Tracker at none against RSTR's 1. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RSTR sells 1 one-off in-app purchase. Ischys Workout Tracker asks for nothing beyond the download.
Ischys Workout Tracker ships an update every 9 days, RSTR every 2 weeks. Both last shipped on October 31, 2026.
| Parameter | Ischys Workout Tracker | RSTR |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 53 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | VASILEIOS POULOPOULOS | Mohammad Almansoori |
In-app purchases
Ischys Workout Tracker
No in-app purchases
RSTR
- RSTR Pro$0.99









