# Quantify 4 vs Twin Timers

The clearest difference is in-app purchases: Twin Timers at none against Quantify 4's 1. Twin Timers also leads on update cadence (every 3 months vs every 21 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Quantify 4 sells 1 one-off in-app purchase. Twin Timers asks for nothing beyond the download.

Quantify 4 ships an update every 21 months, Twin Timers every 3 months. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Quantify 4 | Twin Timers |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 3 months** |
| Size | 89 MB | 1 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [KENJI KANEMOTO](https://appshunter.io/developer/402720982) | [Jerome Kasparian](https://appshunter.io/developer/1528196195) |

## What reviewers say

### Quantify 4

[App page](https://appshunter.io/ios/app/quantify-4/id6448651638)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.49 | one-time |


### Twin Timers

[App page](https://appshunter.io/ios/app/twin-timers/id6476446851)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Quantify 4 free?

Quantify 4 is free to download, with in-app purchases available.

### Is Twin Timers free?

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

### Do Quantify 4 or Twin Timers have ads?

Neither Quantify 4 nor Twin Timers shows ads.

### Which is updated more often, Quantify 4 or Twin Timers?

Quantify 4 ships an update every 21 months, and Twin Timers every 3 months. Most recently, Quantify 4 was updated on October 27, 2026 and Twin Timers on October 7, 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.*