OpenScale vs Trendscale
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenScale
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OpenScale is a simple, private weight tracker, where you’re in full control of your data. Log your weight offline, and export or import everything, whenever you want. No accounts. No internet connection. No hidden syncing. Just you and your data, on your device. Your weight. Your data. Your control.
Trendscale
This app helps you track your weight progress without calorie counting. It uses your daily weight entries to show your real trend and estimate your energy balance. Set goals, view your progress on a dashboard, and manage your history easily.
- Weight trend analysis
- Estimated energy balance
- Goal setting and projection
- Daily dashboard view
- Logbook history
- Data import/export
- On-device privacy
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Trendscale is the simplest, most effective weight tracker for people who are tired of counting calories and macros. Step on the scale, log your weight, and let Trendscale show you what's actually happening. No food logging. No barcode scanning. No stressing about every bite when you're out with friends. Just one number a day - and a clear picture of your progress. --- TREND WEIGHT Your daily weight fluctuates. Trendscale smooths out the noise using an exponential moving average, so you see your real trajectory - not random changes. ENERGY BALANCE We estimate your weekly caloric surplus or deficit from your weight trend alone. No food diary needed. GOALS Set a target to lose, gain, or maintain. See your projected end date, track your weekly rate, and adjust as you go with intuitive eating. DASHBOARD Everything you need on one screen: today's weight, your trend, a 14-day log grid, and weekly stats. Clean, fast, focused. LOGBOOK Browse your full history month by month. Tap any day to edit or add a past entry. IMPORT AND EXPORT Switching from another app? Import your CSV data. Want a backup? Export anytime. PRIVACY FOCUSED All your data stays on your device. No sign-in. No servers. No cloud. --- Terms of Use: https://trendscale.app/terms Privacy Policy: https://trendscale.app/privacy
Screenshots
Verdict
The clearest difference is price: Trendscale at Free against OpenScale's $0.99. Trendscale also leads on update cadence (daily vs fortnightly) and iOS requirement (15.1 vs 26.0). OpenScale's advantage is in-app purchases (none vs 4). On ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Trendscale is free to download; OpenScale costs $0.99 up front. Trendscale sells 4 in-app purchases, starting at $2.99 per month. OpenScale asks for nothing beyond the download.
OpenScale ships an update fortnightly, Trendscale daily. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.
| Parameter | OpenScale | Trendscale |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly | Daily — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 7 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | CAN ETHEM BELLIDO | Gustavo Chaves |
In-app purchases
OpenScale
No in-app purchases
Trendscale
- Trendscale Pro$2.991 Month
- Trendscale Pro14 Days trial$2.991 Month
- Trendscale Pro$19.991 Year
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- Trendscale Pro14 Days trial$19.991 Year
