A workout log that tells you exactly what to lift next time
Log each set (exercise, reps, weight) and Repwren fills in the muscle group, volume, estimated 1-rep max and a PR flag. The Program tab holds up to 20 lifts with sets x target reps and your increment: hit every set's target and it tells you to add the increment next time; miss and it says repeat. Weekly volume by muscle group, bodyweight and measurements, kg or lb.
Example file: 12 weeks of a made-up 3-day program, Program tab
| Lift | Last weight | Sets hit | Next time |
|---|---|---|---|
| Back squat | 100 kg | 2 / 3 | Repeat 100 |
| Bench press | 82.5 kg | 3 / 3 | Add 2.5 → 85 |
| Barbell row | 67.5 kg | 2 / 3 | Repeat 67.5 |
| Overhead press | 47.5 kg | 3 / 3 | Add 2.5 → 50 |
| Deadlift | 105 kg | 0 / 1 | Repeat 105 |
Source: The made-up 12-week, 3-day program in the Repwren example file, Program tab (built by products/repwren/src/workbook.py; rows in products/repwren/store/listing.json).
Repwren vs the alternatives
Published prices, each checked on the date shown; prices change, so confirm on each site.
| Product | Price | Free | Checked |
|---|---|---|---|
| Repwren Workout Tracker | $9 once | free preview PDF | live |
| Hevy Pro (App Store, US) | $2.99 or $3.99/month; $23.99/year; $74.99 lifetime | free app with limits | 2026-10-10 |
| Strong PRO (App Store, US) | $4.99/month or $29.99/year; Strong PRO Forever $79.99-$99.99 | free app with limits | 2026-10-10 |
Why teams pick Repwren
- One clear progression rule you control: hit the target reps on every set and add your increment; miss and repeat.
- PRs and estimated 1-rep max are flagged on every set automatically.
- Weekly volume per muscle group for 16 weeks, so you can see if a body part is under-trained.
- One-time $9, no subscription, history in your own file; log sets from the Google Sheets phone app.
- Honest limit: no rest timer, exercise videos or Apple Watch app; it does not prescribe a program.
How it works
- Pick kg or lb and your start date on Settings.
- Set your lifts on Program: sets, target reps and increment (for example 3 x 5, +2.5 kg).
- Log each set on the Log tab; before the next session, read Next time on Program.
FAQ
Why not Hevy or Strong?
Both are polished phone apps with timers and exercise libraries; their Pro tiers cost $23.99-$29.99 a year or more. Repwren is $9 once and keeps the progression rule and the data in a spreadsheet you can change.
Does it work in Google Sheets?
Yes: upload the .xlsx to Google Drive and open it with Google Sheets; the phone app works for logging sets.
How is the 1-rep max estimated?
With the Epley formula, weight x (1 + reps / 30), from each set; it is an estimate, best for sets of 1-10 reps, not a tested max.
Is it a training program?
It's a tracker with a simple progression rule you control; it doesn't prescribe exercises or loads, and it isn't medical advice.