# Retro vs Twinkle Clock

The clearest difference is in-app purchases: Retro at none against Twinkle Clock's 1. Retro also leads on update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

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

Retro ships an update every 4 days, Twinkle Clock fortnightly. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Retro | Twinkle Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 5 MB | 23 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Hohyeon Moon](https://appshunter.io/developer/1441066295) | [Hiroyasu Hirai](https://appshunter.io/developer/455568461) |

## What reviewers say

### Retro

[App page](https://appshunter.io/ios/app/retro/id1630667782)

**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 Retro free?

Retro 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 Retro or Twinkle Clock have ads?

Neither Retro nor Twinkle Clock shows ads.

### Which is updated more often, Retro or Twinkle Clock?

Retro ships an update every 4 days, and Twinkle Clock fortnightly. Most recently, Retro was updated on October 16, 2026 and Twinkle Clock on October 8, 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.*