# OneThing vs Zenith

The clearest difference is in-app purchases: OneThing at none against Zenith's 1. Zenith's advantage is update cadence (every 4 days vs every 6 weeks) and iOS requirement (18.0 vs 26.1). On price, ads and device support there is nothing between them.

Both are free to download. Zenith sells 1 in-app purchase, starting at $2.99 per month. OneThing asks for nothing beyond the download.

OneThing ships an update every 6 weeks, Zenith every 4 days. The most recent releases landed on September 12, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | OneThing | Zenith |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zenith-pomodoro-study-timer/id6770132700/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 208 MB |
| Requires iOS | 26.1 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Grupo Pixeles Latinoamerica, S.A. de C.V.](https://appshunter.io/developer/1704830040) | [Shahab Darvish](https://appshunter.io/developer/1896717914) |

## What reviewers say

### OneThing

[App page](https://appshunter.io/ios/app/onething-one-task/id6762528138)

**In-app purchases:** none


### Zenith

[App page](https://appshunter.io/ios/app/zenith-pomodoro-study-timer/id6770132700)

This minimalist productivity app uses the Pomodoro technique with atmospheric visuals and calming breathing exercises to help you achieve deep work. Customize focus sessions, breaks, and choose immersive themes to create a digital sanctuary for enhanced concentration.

**Highlights:** Aesthetic focus with dynamic mesh backgrounds, Immersive themes for work ambiance, Customizable Pomodoro technique sessions, Integrated breathing exercises, Live Activities for progress tracking, Session tagging for focus insights

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per month |


## Frequently asked questions

### Is OneThing free?

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

### Is Zenith free?

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

### Do OneThing or Zenith have ads?

Neither OneThing nor Zenith shows ads.

### Which is updated more often, OneThing or Zenith?

OneThing ships an update every 6 weeks, and Zenith every 4 days. Most recently, OneThing was updated on September 12, 2026 and Zenith on October 17, 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.*