# Subintervals vs Calorie Gap

The clearest difference is iOS requirement: Subintervals at 16.4 against Calorie Gap's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Subintervals sells 4 one-off in-app purchases and Calorie Gap sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Subintervals ships an update weekly, Calorie Gap every 2 weeks. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Subintervals | Calorie Gap |
| --- | --- | --- |
| 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 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 109 MB | 6 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Inaki Arroyo Nebreda](https://appshunter.io/developer/1736987639) | [DIANA SMIRNOVA](https://appshunter.io/developer/1885618797) |

## 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 |


### Calorie Gap

[App page](https://appshunter.io/ios/app/calorie-gap/id6760667633)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calorie Gap Trial | Free | one-time |
| Calorie Gap Premium | $4.99 | one-time |


## Frequently asked questions

### Is Subintervals free?

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

### Is Calorie Gap free?

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

### Do Subintervals or Calorie Gap have ads?

Neither Subintervals nor Calorie Gap shows ads.

### Which is updated more often, Subintervals or Calorie Gap?

Subintervals ships an update weekly, and Calorie Gap every 2 weeks. Most recently, Subintervals was updated on November 4, 2026 and Calorie Gap on October 25, 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.*