# Subintervals vs Marathon Buddy

The clearest difference is update cadence: Marathon Buddy at every 3 days against Subintervals's weekly. Marathon Buddy also leads on iOS requirement (13.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Subintervals sells 4 one-off in-app purchases and Marathon Buddy sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Subintervals ships an update weekly, Marathon Buddy every 3 days. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Subintervals | Marathon Buddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subintervals/id6479748688/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 109 MB | 97 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Inaki Arroyo Nebreda](https://appshunter.io/developer/1736987639) | [群 谢](https://appshunter.io/developer/1473924121) |

## What reviewers say

### Subintervals

[App page](https://appshunter.io/ios/app/subintervals/id6479748688)

Visualize your training data with detailed displays and interactive graphs. Customize your analysis and sync seamlessly with intervals.icu for up-to-the-minute insights into activities, events, and performance metrics.

**Highlights:** Detailed activity and event visualization, Interactive performance graphs, Seamless intervals.icu sync, Customizable data analysis, Actionable training insights

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $3.99 | one-time |
| Lunch | $11.99 | one-time |
| Big Thanks | $17.99 | one-time |
| Sponsor | $44.99 | one-time |


### Marathon Buddy

[App page](https://appshunter.io/ios/app/marathon-buddy-run-and-train/id6757374248)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $9.99 | per month |
| Annual Plan | $99.99 | per year |


## Frequently asked questions

### Is Subintervals free?

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

### Is Marathon Buddy free?

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

### Do Subintervals or Marathon Buddy have ads?

Neither Subintervals nor Marathon Buddy shows ads.

### Which is updated more often, Subintervals or Marathon Buddy?

Subintervals ships an update weekly, and Marathon Buddy every 3 days. Most recently, Subintervals was updated on October 16, 2026 and Marathon Buddy on October 4, 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.*