VERTEX vs StrengthLog
Short answer
Both let you log workouts for free. Choose StrengthLog for Android, 600+ exercises and a deep program library, with Premium for advanced statistics. Choose VERTEX for a training score, a cited coach, a social feed and leaderboards, with every feature free; it is iPhone-only for now.
| Feature | VERTEX | StrengthLog |
|---|---|---|
| Price to download | Free | Free, no ads, unlimited logging |
| Paid tier | None: every feature is free | Premium: $16.90/month, $37.90/3 months or $109/year (US App Store) |
| Platforms | iPhone (Android coming soon) | iPhone, Android |
| Languages listed on the App Store | English (the app itself runs in English, French, Dutch and Spanish) | English |
| Ready-made programs | 50 workout plans | Popular programs free; the complete program library with Premium |
| Social | Feed with kudos and comments, shared routines, friends and gym leaderboards | Friends, challenges, PR and Strength Level comparisons |
| Estimated 1RM | From every set (Epley, capped at 12 reps), charted per lift and muscle | 1RM estimates and suggested PR warm-ups |
| Overall training score | Vertex Index, 0 to 100 from five factors | Not listed |
| Coaching | Coach with 17 rules, each citing its source | Not listed |
| Notable extras | Lock Screen rest timer, strength standards, DOTS, 21-muscle map, share cards | 600+ exercises with videos, muscle heat maps (Premium), ChatGPT and Claude integration (Premium) |
Where StrengthLog is stronger
- Available on Android as well as iPhone.
- A much larger exercise library: 600+ exercises with instructions and videos.
- A deep program library for strength, bodybuilding and powerlifting.
Where VERTEX is different
- Every feature is free: there is no paid tier.
- The Vertex Index turns your training into one score from 0 to 100, from five factors weighted to your goal.
- A Coach with 17 rules tells you what to fix next, and each rule cites its source.
- A rest timer on the Lock Screen as a Live Activity, with +15s and Skip.
Which should you choose?
If you are on Android today, StrengthLog is the one you can use: VERTEX is iPhone-only until the Android version ships. On iPhone, the choice comes down to what you want from a tracker. StrengthLog is a capable logger with its own strengths, listed above. VERTEX is built around one question, whether your training is adding up, and keeps every feature free.
Sources
Checked on , from each app's App Store listing (US store, description and in-app purchases), Google Play listing and official website. Prices and features change; check the listings before you choose. “Not listed” means the app's own listing does not mention it, not that the app cannot do it. VERTEX is made by Vertex Strength Lab, the publisher of this page.
StrengthLog is a trademark of its owner. Vertex Strength Lab is not affiliated with, endorsed by or sponsored by it.
- StrengthLog (Styrkelabbet AB): App Store · Google Play · Website