# Writestone vs Intervals

The clearest difference is iOS requirement: Writestone at 13.0 against Intervals's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Writestone | Intervals |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 days | Every 3 days |
| Size | 89 MB | 26 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seyfettin Yildirim](https://appshunter.io/developer/1698912402) | [sabaa Fatani](https://appshunter.io/developer/1851619791) |

## What reviewers say

### Writestone

[App page](https://appshunter.io/ios/app/writestone/id6477541746)

**In-app purchases:** none


### Intervals

[App page](https://appshunter.io/ios/app/intervals-deep-focus/id6755057373)

**In-app purchases:** none


## Frequently asked questions

### Is Writestone free?

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

### Is Intervals free?

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

### Do Writestone or Intervals have ads?

Both Writestone and Intervals show ads.

### Which is updated more often, Writestone or Intervals?

Writestone ships an update every 3 days, and Intervals every 3 days. Most recently, Writestone was updated on September 26, 2026 and Intervals on September 10, 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.*