# Achromator vs Timer4

The clearest difference is in-app purchases: Achromator at none against Timer4's 1. Achromator also leads on iOS requirement (17.6 vs 26.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Timer4 sells 1 one-off in-app purchase. Achromator asks for nothing beyond the download.

Achromator ships an update monthly, Timer4 every 4 weeks. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Achromator | Timer4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (5 ratings)](https://appshunter.io/ios/app/timer4-gravity-timer/id6755321732/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 37.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 4 MB |
| Requires iOS | **17.6** | 26.1 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [HANS-JURGEN GRAF GROTE](https://appshunter.io/developer/1787606413) | [Goateraction](https://appshunter.io/developer/1647805479) |

## What reviewers say

### Achromator

[App page](https://appshunter.io/ios/app/achromator/id6739949388)

**In-app purchases:** none


### Timer4

[App page](https://appshunter.io/ios/app/timer4-gravity-timer/id6755321732)

This app offers a unique timer experience by automatically adjusting countdown durations based on your device's orientation. Simply rotate your phone to switch between preset intervals with a physics-driven interface and immersive haptic feedback.

**Highlights:** Physics-based interface, Instant duration switching via rotation, Smart motion detection, Immersive haptic feedback, Customizable timer presets, Intuitive orientation control

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is Achromator free?

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

### Is Timer4 free?

Timer4 is free to download, with in-app purchases available.

### Do Achromator or Timer4 have ads?

Neither Achromator nor Timer4 shows ads.

### Which is updated more often, Achromator or Timer4?

Achromator ships an update monthly, and Timer4 every 4 weeks. Most recently, Achromator was updated on October 25, 2026 and Timer4 on October 30, 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.*