Progression vs Kairos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Progression
This app helps serious lifters track their strength training progress by logging every set and providing data-driven insights. It offers automatic suggestions for increasing weight and clear visualizations of your performance over time. Stop guessing and start measuring your gains.
- Log sets in seconds
- Automatic weight increase suggestions
- Progress tracking with charts
- Build or select training plans
- Built-in rest timer
- Full training history
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MOTIVATION ISN'T A TRAINING STRATEGY. If you're serious about getting stronger, you measure it. Progression turns every set into data that makes you stronger – logged in seconds, clearly visualized, no clutter. Motivation gets you training. Data gets you further. Most people stall because they train blind – no plan, no numbers, no idea what they did last time. Progression remembers every set for you and shows you exactly when it's time to add weight. How it works: • Build your own training plan – or pick a program • Log every set in seconds • Get automatic suggestions for when to increase the weight • Track your progress in clear charts Everything you need: • Templates for recurring workouts • Built-in rest timer • Full training history & personal records PROGRESSION PRO The core features are free for your first workouts – just get started. With Pro, you get the most out of your training: • Unlimited training plans & workouts • All long-term charts & statistics You can start a free trial before any charge. Cancel anytime. Stop guessing. Start measuring. Questions or feedback? Reach out anytime: martin@devpie.de Terms of Use & Privacy: https://devpie.de/legal.html
Kairos
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Kairos is the strength and gym tracker for people who just want to train — not manage a subscription. One purchase. Yours forever. No subscription, no ads, no account, no cloud. Everything lives on your device. --------------- COACH MODE — YOUR VOICE-GUIDED SESSION Press start and train. Coach Mode walks you through every set and rest, block by block, with a live timer and automatic rest countdowns — so your eyes stay on the bar, not the screen. LOG FAST, MISS NOTHING Tap in weight and reps in seconds. Full workout history, forever, with no limits on what you can look back on. SEE YOURSELF GET STRONGER Every personal record is celebrated the moment you hit it. Track trends, volume, and progress across your whole training history. REAL PROGRAMS, READY TO GO Start with structured Push/Pull/Legs and full-body plans, or build your own. 650+ built-in exercises with clear animated demonstrations and muscle-activation maps. SHARE THE WIN Turn any finished session into a clean, shareable card — your volume, your exercises, your PRs. BUILT FOR COACHES Build programs and hand them to clients as a single file. Your athletes import and train — no accounts, no platform in the middle. --------------- WHAT MAKES KAIROS DIFFERENT • FULLY OFFLINE — works with no signal, anywhere • ON YOUR DEVICE — all data stored locally, nothing uploaded • NO ACCOUNT — open the app and train, no sign-up • NO ADS, NO TRACKING — we don't collect your data • PAY ONCE — a one-time purchase, never a subscription Try everything free for 14 days. After that, keep Kairos free forever with the essentials, or unlock every feature once with Kairos Lifetime. No charge at the end of the trial. Nothing to cancel. Train the moment.
Screenshots
Verdict
The clearest difference is iOS requirement: Kairos at 14.0 against Progression's 17.6. On price, ads, in-app purchases 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. Progression sells 4 in-app purchases, starting at $6.99 per 7 days and Kairos sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Progression | Kairos |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (161 ratings) — better | — |
| Positive reviews | 73.3% of reviews | — |
| Number of ratings | 161 — better | — |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 190 MB |
| Age rating | 4+ | 4+ |
| Developer | Martin Pietrowski | Pawin Peetawan |
In-app purchases
Progression
- PRO$6.997 Days
- PRO7 Days trial$12.991 Month
- PRO1 Month trial$79.991 Year
- PRO$99.99
Kairos
- Kairos Lifetime$19.99









