# OneCal Calorie Tracker vs Simple Weight Tracker App

The clearest difference is in-app purchases: OneCal Calorie Tracker at none against Simple Weight Tracker App's 2. Simple Weight Tracker App's advantage is ads (none vs shown) and iOS requirement (15.1 vs 18.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Simple Weight Tracker App sells 2 in-app purchases, starting at $9.99 per 7 days. OneCal Calorie Tracker asks for nothing beyond the download.

OneCal Calorie Tracker ships an update every 9 days, Simple Weight Tracker App every 10 days. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | OneCal Calorie Tracker | Simple Weight Tracker App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simple-weight-tracker-app/id6762024955/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 10 days |
| Monetization | — | Freemium |
| Size | 5 MB | 40 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Marcus Spitzmiller](https://appshunter.io/developer/1844961002) | [Pablo Sanchez Lorente](https://appshunter.io/developer/1892520014) |

## What reviewers say

### OneCal Calorie Tracker

[App page](https://appshunter.io/ios/app/onecal-calorie-tracker/id6753773780)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Weight Tracker App

[App page](https://appshunter.io/ios/app/simple-weight-tracker-app/id6762024955)

Easily log your daily weight and visualize your progress over time. This app helps you spot trends, build healthy habits, and achieve your weight goals with a simple, private interface. Unlock advanced features like charts and unlimited history with a subscription.

**Highlights:** Daily weight logging, Progress over time visualization, Trend spotting, Goal setting (lose, gain, maintain), Data export, 100% private data storage

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $9.99 | per 7 days |
| Pro 3 Months | $19.99 | per 3 months |


## Frequently asked questions

### Is OneCal Calorie Tracker free?

OneCal Calorie Tracker is free to download, with no in-app purchases.

### Is Simple Weight Tracker App free?

Simple Weight Tracker App is free to download, with in-app purchases available.

### Do OneCal Calorie Tracker or Simple Weight Tracker App have ads?

OneCal Calorie Tracker shows ads; Simple Weight Tracker App does not.

### Which is updated more often, OneCal Calorie Tracker or Simple Weight Tracker App?

OneCal Calorie Tracker ships an update every 9 days, and Simple Weight Tracker App every 10 days. Most recently, OneCal Calorie Tracker was updated on October 3, 2026 and Simple Weight Tracker App on October 2, 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.*