# Interval Training vs solfa

The clearest difference is ads: solfa at none against Interval Training's shown. Interval Training's advantage is update cadence (every 11 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Interval Training ships an update every 11 days, solfa every 2 months. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Interval Training | solfa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 2 months |
| Size | 5 MB | 40 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) | [B8T LABS](https://appshunter.io/developer/6778463963) |

## What reviewers say

### Interval Training

[App page](https://appshunter.io/ios/app/interval-training-mizou/id6760253212)

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

**In-app purchases:** none


### solfa

[App page](https://appshunter.io/ios/app/solfa/id6785313126)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Training free?

Interval Training is free to download, with no in-app purchases.

### Is solfa free?

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

### Do Interval Training or solfa have ads?

Interval Training shows ads; solfa does not.

### Which is updated more often, Interval Training or solfa?

Interval Training ships an update every 11 days, and solfa every 2 months. Most recently, Interval Training was updated on October 25, 2026 and solfa on October 6, 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.*