# Lifespan vs Twinkle Clock

The clearest difference is in-app purchases: Lifespan at none against Twinkle Clock's 1. Lifespan also leads on iOS requirement (12.0 vs 17.0). Twinkle Clock's advantage is device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Twinkle Clock sells 1 one-off in-app purchase. Lifespan asks for nothing beyond the download.

## The numbers

| Metric | Lifespan | Twinkle Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Size | 16 MB | 23 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Baoear Information Technology Co., Ltd.](https://appshunter.io/developer/1009791596) | [Hiroyasu Hirai](https://appshunter.io/developer/455568461) |

## What reviewers say

### Lifespan

[App page](https://appshunter.io/ios/app/lifespan-time-machine/id1612824989)

**Features:** macOS Compatibility

**In-app purchases:** none


### Twinkle Clock

[App page](https://appshunter.io/ios/app/twinkle-clock/id6467501688)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Twinkle Clock Pro | $24.99 | one-time |


## Frequently asked questions

### Is Lifespan free?

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

### Is Twinkle Clock free?

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

### Do Lifespan or Twinkle Clock have ads?

Neither Lifespan nor Twinkle Clock shows ads.

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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.*