# Session Timer vs Simple Zen

The clearest difference is update cadence: Simple Zen at every 2 weeks against Session Timer's every 5 weeks. Simple Zen also leads on iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Session Timer sells 3 in-app purchases, starting at $1.99 per month and Simple Zen sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Session Timer ships an update every 5 weeks, Simple Zen every 2 weeks. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Session Timer | Simple Zen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Size | 45 MB | 110 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marcelo Nardone](https://appshunter.io/developer/1788571423) | [立派 汪](https://appshunter.io/developer/1604350706) |

## What reviewers say

### Session Timer

[App page](https://appshunter.io/ios/app/session-timer-deep-focus/id6747844509)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DeepFocus Monthly | $1.99 | per month |
| DeepFocus Yearly | $14.99 | per year |
| DeepFocus - Track your Time | $19.99 | one-time |


### Simple Zen

[App page](https://appshunter.io/ios/app/simple-zen-dumb-phone/id6760552860)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple Zen Premium_ | $3.99 | one-time |
| Simple Zen Premium | $3.99 | one-time |


## Frequently asked questions

### Is Session Timer free?

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

### Is Simple Zen free?

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

### Do Session Timer or Simple Zen have ads?

Neither Session Timer nor Simple Zen shows ads.

### Which is updated more often, Session Timer or Simple Zen?

Session Timer ships an update every 5 weeks, and Simple Zen every 2 weeks. Most recently, Session Timer was updated on September 8, 2026 and Simple Zen 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.*