Strength tracker & analytics
Other apps track.Volstack analyzes.
Log weight and reps. Volstack detects PRs, maps volume per muscle, flags stagnation, and shows which muscles are ready — so you know what to push next.
Log the set. We’ll show you what it means.
Most apps store your training. Volstack reads it — tonnage per muscle, PR trends, recovery status, antagonist balance — and tells you what shifted before you notice in the mirror.
Features
See it in the app
Tap a feature to preview it — the screenshot and description update to match.
Active Workout
Previous session loaded. Beat it.
Ghost rows pre-fill your last sets. One tap confirms a set. Sticky header tracks time — so you always know what you lifted last time.
- Ghost rows from last session
- Warmup / drop / failure sets
- Offline logging, sync later
How it works
The value loop
Train → data → insight → adjust. No guesswork in the middle.
- 01
Log the session
Weight, reps, set type. One tap confirms a set. Your previous numbers stay visible the whole time.
- 02
Data gets parsed
Volstack calculates tonnage per muscle, estimated 1RM, and compares volume to your personalized MEV/MRV.
- 03
Patterns surface
New PRs flagged automatically. Recovery map updates. Imbalances and stagnation alerts appear when the data says so.
- 04
You adjust
No prescriptions — just perspective. You see what changed before it shows up in the mirror.
Personalization
Your goal reshapes the dashboard
Strength, muscle, or fitness — card order, volume targets, and what gets flagged first all adapt. Same data, different lens.
Build Muscle
Volume and muscle balance take priority. Imbalance detection surfaces when one side of an antagonist pair falls behind.
Get Stronger
PRs and e1RM lead the dashboard. Volume thresholds tuned for strength, not hypertrophy defaults.
Stay Consistent
Consistency and session time lead. Weekly frequency goals and streak tracking — without the motivational fluff.
Pricing
Free to log. PRO to understand.
The paywall is behind intelligence, not logging. PR detection and stagnation alerts stay free.
PRO pricing is shown in the Play Store listing before you subscribe — nothing hidden after install.
| Feature | Free | PRO |
|---|---|---|
| Workout logging | Included | Included |
| Auto PR detection | Included | Included |
| Stagnation alerts | Included | Included |
| Recovery map | Preview | Full + ACWR |
| Routines | Up to 4 | Unlimited |
| Insight history | 30 days | Unlimited |
| Volume + MEV/MRV | Volume only | Full analytics |
| Muscle imbalance | — | Included |
FAQ
Straight answers
How the product works — not marketing claims.
They log your training well. Volstack adds an analysis layer: personalized MEV/MRV per muscle, stagnation alerts, antagonist imbalance detection, and a recovery map adjusted to your profile. The logger is the entry point — insight is the product.
Pre-filled sets from your last session. When you open a workout, you already see the weights and reps you hit before — so you know exactly what to match or beat. No mental arithmetic between sets.
After each session Volstack compares completed sets to your full history. Heavier weight, more reps at the same load, or a higher estimated 1RM — flagged automatically. Post-workout summary shows old versus new.
Minimum Effective Volume and Maximum Recoverable Volume — weekly set targets per muscle group. Volstack calculates yours based on goal, sex, age, and experience, then tracks whether you're below, in range, or over.
Yes. Log the full session without a connection. Data queues locally and syncs when you're back online. The gym floor shouldn't require Wi-Fi.
Unlimited history, full recovery map with ACWR alerts (Acute:Chronic Workload Ratio — flags when recent volume spikes ahead of what you're recovered for), muscle imbalance analysis, complete MEV/MRV analytics, and unlimited routines. Core logging, PR detection, and stagnation alerts stay free.
Experiment with training.
We’ll tell you what worked.
Heavier across the board — that’s a strong session. Same weights three weeks straight — that’s stagnation. Volstack names both.
Get it on Google Play
Turn every set into insight
Previous session always visible. PRs tracked automatically. Volume mapped per muscle. Available now on Google Play.
Get it on Google PlayFree core features · Android