# OpenScale vs Trendscale

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.

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.

## The numbers

| Metric | OpenScale | Trendscale |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trendscale-weight-tracker/id6760431300/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | — | Freemium |
| Size | 7 MB | 42 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CAN ETHEM BELLIDO](https://appshunter.io/developer/1851088390) | [Gustavo Chaves](https://appshunter.io/developer/1884434516) |

## What reviewers say

### OpenScale

[App page](https://appshunter.io/ios/app/openscale/id6759986422)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Trendscale

[App page](https://appshunter.io/ios/app/trendscale-weight-tracker/id6760431300)

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.

**Highlights:** Weight trend analysis, Estimated energy balance, Goal setting and projection, Daily dashboard view, Logbook history, Data import/export, On-device privacy

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trendscale Pro | $2.99 | per month |
| Trendscale Pro | $2.99 | per month |
| Trendscale Pro | $19.99 | per year |
| Trendscale Pro | $19.99 | per year |


## Frequently asked questions

### Is OpenScale free?

OpenScale costs $0.99, with no in-app purchases.

### Is Trendscale free?

Trendscale is free to download, with in-app purchases available.

### Do OpenScale or Trendscale have ads?

Neither OpenScale nor Trendscale shows ads.

### Which is updated more often, OpenScale or Trendscale?

OpenScale ships an update fortnightly, and Trendscale daily. Most recently, OpenScale was updated on October 8, 2026 and Trendscale on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*