The short answer
Libra is free to start, smoothes daily readings into a clear trend, and is maintained by an active developer. It is also ad-supported unless you pay for Pro, and it syncs data through its own cloud. WeekScale is an alternative for iOS that keeps the calm trend idea but drops the ads, the account, and the recurring price.
What Libra does well
Libra deserves an honest appraisal, because it is good at what it does.
- A genuinely free tier with a smooth exponential-smoothing trend line.
- Tracks more than weight: body fat, muscle mass, and text notes.
- BMI and body-composition analysis built into the charts.
- Cloud sync, Apple Health, and Withings scale integration.
- A responsive single developer with years of history.
If you use those features every day, Libra is a reasonable choice, and you may not need to switch at all.
Where WeekScale differs
WeekScale makes a narrower set of choices, on purpose:
- No ads, on any tier. Libra shows ads unless you subscribe to Pro. WeekScale has no ads at all — there is no free tier with ads and no Pro tier to escape them.
- No cloud. Libra stores and syncs data through its own cloud service. WeekScale has no account and no WeekScale-operated cloud; your history lives on your device, and the Android app isn't even granted internet permission.
- Calendar weeks, not a moving trend. Instead of a continuously smoothed line, WeekScale compares fixed, finished weeks. Read the argument.
- Weight only, by design. WeekScale deliberately tracks weight — not body fat, muscle, or BMI — and does not set goals or predict outcomes.
- One-time price. $6 USD or €5 EUR, once, instead of a monthly or yearly subscription.
Side by side
| Feature | Libra | WeekScale |
|---|---|---|
| Price | Free with ads; Pro subscription removes them | One-time purchase ($6 USD / €5 EUR) |
| Trend model | Moving-average smoothing | Calendar-week averages |
| Metrics | Weight, body fat, muscle, BMI | Weight only |
| Sync | Libra Cloud, Apple Health, Withings | On-device; no cloud or account |
| Rewards | Goals and predictions | A complete week (5+ weigh-ins) |
| Platforms | iOS and Android | iOS and Android (coming soon) |
Which should you choose?
Choose Libra if you rely on multi-metric tracking, cloud sync, or scale integrations, or if you are happy with a free, ad-supported app. Choose WeekScale if you want a simpler weight-only tracker with no ads, no account, and no recurring price.
If your main concern is where your weight data goes, the local-first guide explains the tradeoffs in detail.
Compare the other angles
Your week is the unit.
Also compare Happy Scale, or read about trackers without subscriptions and private, offline tracking.
Join the WeekScale beta