Offline coaching for
strength & calisthenics
Build and follow structured programs, use effort-based progression guidance, and log every set fast. THYMOS works offline with no mandatory account, so your training stays yours.
It Writes the Plan.
Answer a few questions and THYMOS builds a program around the equipment you actually have, tells you why each exercise is there, and moves it forward week by week.
Built Around
What You Own.
Tell THYMOS what you can train with and the program is rebuilt around it before you ever see it. A barbell bench press becomes archer push-ups, a bent-over row becomes an archer row, and anything with no safe substitute is removed rather than quietly left in. Every change is listed, with the reason beside it.
Every week
periodized.
Sets, reps, rest and target RPE all move as a block progresses, deload weeks included. Nothing is hidden until the day arrives: tap ahead to any week and see exactly what it will ask of you.
Every Exercise
Says Why.
Tap "Why this?" on any exercise and the program tells you the job it is doing in that session: the heaviest work, supporting work, single-muscle isolation. Effort targets are spelled out in a sentence, not left as a number you are expected to already know.
And You Can
Overrule It.
Nothing is locked. Swap an exercise for one of the alternatives the app offers and the program carries on around your choice. A plan you disagree with is a plan you stop following, so the last word stays yours.
It created a very good program for me at home because I don't go to the gym. and I can change the exercises with easy and hard variations. It has a lot of gym and home exercises. The muscle heatmap looks so cool. Plus it doesn't require an account.
What's Under the Hood.
Not another fitness app with a social feed. THYMOS is a precision instrument for people who take training seriously.
Ultra-Fast Logging
Instant workout starts, custom templates, and progressive programs. Go from idea to action in seconds.
No account needed →Offline-First
Works completely offline, always. Cloud sync is optional and only used for backup, never required.
How offline works →Anonymous by Default
Open the app and start lifting. No email, no account, no internet required. Link an account only when you want multi-device sync.
How anonymity works →A very useful app. It's actually exactly what I've been looking for. The section with 425 exercises for all muscle groups and every possible piece of equipment is a real gem! Plus, the easy and intuitive search, filtering, instructions, and even the ability to customize exercises and weights on the fly - wow. And best of all, it uses all this data to build a workout history, provide personalized recommendations, and create training programs. I highly recommend it to everyone for home workouts!
Not All Fitness Apps Are Equal.
Most fitness apps require an account, share your data with ad partners, and lock you in. Here's what separates THYMOS.
| THYMOS | Strong | Hevy | MyFitnessPal | |
|---|---|---|---|---|
| No Account to Start | ✓ | ✗ | ✗ | ✗ |
| 100% Offline | ✓ | ✓ | Unconfirmed | ✗ |
| No Social Feed | ✓ | ✓ | ✗ | ✗ |
| No Ads | ✓ | ✓ | ✓ | ✗ |
| No Ad Partner Data Sharing | ✓ | Not Documented | ✗ | ✗ |
| Import from Other Apps | ✓ | ✗ | ✓ | ✗ |
| Free Full Data Export | ✓ | ✓ | ✓ | Premium Only |
Sources: official help centers, privacy policies, and app store descriptions. Strong's data-sharing practices are not explicitly documented in their public privacy policy. Hevy's full offline capability for the main app is not confirmed in official documentation.
See It In Action.
Six things THYMOS does differently. Tap a tab to switch, or just watch them rotate.
Lift Smarter.
Not Just Heavier.
THYMOS reads the RPE and RIR you log during each set and automatically suggests the right weight for your next working set. No guesswork, no spreadsheets, just data-driven progression built into your workflow. Don't want a suggestion? Dismiss it with one tap and enter your own weight.
Prime Every Session.
Scientifically.
Evidence-based warm-up prescriptions, built automatically from your working weight. THYMOS ramps you up with the right loads at the right intensities, so you walk into every working set fully prepared.
Load Smarter,
Faster.
Enter your target weight and get an instant, balanced plate setup. No mental math, no guesswork, just bar-ready precision. Log what you actually lift by selecting the plates on the bar. The app calculates total load automatically for cleaner tracking.
See What
You're Building.
Muscle distribution heatmaps show you exactly which muscles you've trained, how intensely, and what's been neglected. Turn your sessions into a clear map of your training balance, and guide what to push next.
Real Data.
Clear Trends.
Trends, estimated 1RM, set volume, and full workout history, all in one place. Measured data stays measured. Estimated data is clearly marked. We never mix the two to make numbers look better than they are.
Bring Your
History With You.
Import from Strong, Hevy, FitNotes, or Excel, all your previous training data comes with you. And when you want to leave, export everything as CSV or JSON. Your data is always portable. Always yours.
I hadn't been able to find a decent app to actively record and use my workouts like this; the personalized program it created is excellent. The way it recommends weights based on the intensity of your workout is also fantastic.
Your fitness data can identify you
among 100 million people in 6 days.
Here's what we do about it.
Workout logs aren't just numbers, they're a biometric fingerprint of your body, habits, and schedule. Most fitness apps treat that data as a product. THYMOS treats it as yours. Everything stays on your device by default. No behavioral tracking. No third-party data sharing. Sensitive fields, like readiness scores and wellness context, never leave your phone, ever.
I'm building THYMOS because I'm tired of fitness apps that treat your data as their product and your attention as their revenue. As a lifter and a developer, I want a tool that respects both the craft and the person behind it. Just an honest tool for honest training. If we are on the same page, welcome aboard.
Frequently Asked Questions
Download THYMOS
Available now on Android, iPhone, and iPad. Download THYMOS and train without compromise.
Lock in lifetime 40% off Pro on Google Play. This Android-only offer is shown in the Google Play purchase flow.
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