# NPC vs When

The clearest difference is ads: NPC at none against When's shown. When's advantage is update cadence (weekly vs every 34 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NPC ships an update every 34 months, When weekly. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | NPC | When |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (28 ratings)](https://appshunter.io/ios/app/when-flip-clock/id1539325158/reviews)** |
| Number of ratings | — | **28** |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 34 months | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 127 MB | 73 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NPC CORPORATION](https://appshunter.io/developer/921527562) | [磊 岑](https://appshunter.io/developer/1102462338) |

## What reviewers say

### NPC

[App page](https://appshunter.io/ios/app/npc-ar/id1363850044)

**Features:** macOS Compatibility

**In-app purchases:** none


### When

[App page](https://appshunter.io/ios/app/when-flip-clock/id1539325158)

This app offers a minimalist flip clock experience with customizable widgets. It features a full-screen display with classic page-turning animations and adjustable brightness. Personalize your time display with options for seconds, date, and week.

**Highlights:** Full-screen classic flip animation, Minimalist design style, Customizable time display (seconds, date, week), 12/24 hour mode switching, Adjustable screen brightness, Multiple widget options (Flip Clock, Digital Clock, Calendar, Progress Bar, Disc Clock)

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

**In-app purchases:** none


## Frequently asked questions

### Is NPC free?

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

### Is When free?

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

### Do NPC or When have ads?

When shows ads; NPC does not.

### Which is updated more often, NPC or When?

NPC ships an update every 34 months, and When weekly. Most recently, NPC was updated on September 16, 2026 and When on September 18, 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.*