# Stamina AI vs ChartRun

The clearest difference is in-app purchases: Stamina AI at none against ChartRun's 2. Stamina AI also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). ChartRun's advantage is update cadence (every 6 days vs every 4 months). On price and ads there is nothing between them.

Both are free to download. ChartRun sells 2 in-app purchases, starting at $1.99 per month. Stamina AI asks for nothing beyond the download.

Stamina AI ships an update every 4 months, ChartRun every 6 days. The most recent releases landed on September 9, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Stamina AI | ChartRun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chartrun/id6670346978/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 39 MB | 11 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Stamina AI](https://appshunter.io/developer/1542650096) | [EPage, Inc.](https://appshunter.io/developer/298850390) |

## What reviewers say

### Stamina AI

[App page](https://appshunter.io/ios/app/stamina-ai/id6466097779)

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

**In-app purchases:** none


### ChartRun

[App page](https://appshunter.io/ios/app/chartrun/id6670346978)

Visualize your running and walking performance history from Health data. Track distance, pace, heart rate, and more with detailed charts and lists. Share your workout summaries as PDFs.

**Highlights:** View data by day, week, or month, Chart and list views, Track distance, pace, heart rate, and more, Share workout info as PDF, Premium features: multi-year history, route maps, zone graphs

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Premium | $19.99 | per year |


## Frequently asked questions

### Is Stamina AI free?

Stamina AI is free to download, with no in-app purchases.

### Is ChartRun free?

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

### Do Stamina AI or ChartRun have ads?

Neither Stamina AI nor ChartRun shows ads.

### Which is updated more often, Stamina AI or ChartRun?

Stamina AI ships an update every 4 months, and ChartRun every 6 days. Most recently, Stamina AI was updated on September 9, 2026 and ChartRun on June 11, 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.*