# NyanLock vs シフカレ

The clearest difference is in-app purchases: シフカレ at none against NyanLock's 2. シフカレ also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. NyanLock sells 2 in-app purchases, starting at $9.99 per month. シフカレ asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. Both last shipped on October 9, 2026.

## The numbers

| Metric | NyanLock | シフカレ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Freemium | — |
| Size | 35 MB | 10 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Pixel Tokyo Inc.](https://appshunter.io/developer/1690521470) | [Junichiro Tokiyoshi](https://appshunter.io/developer/1894481041) |

## What reviewers say

### NyanLock

[App page](https://appshunter.io/ios/app/nyanlock-screen-time-control/id6776103034)

This app helps you reduce screen time by locking distracting apps. Unlock them by interacting with virtual cats through petting or watching short videos, making habit change enjoyable.

**Highlights:** Lock distracting apps, Unlock by petting or watching cats, Streak tracking for consecutive unlocks, Collect daily stamps, View 'Cat Time' chart, Pro features: AI stamps, family sharing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $39.99 | per year |


### シフカレ

[App page](https://appshunter.io/ios/app/id6790414829)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NyanLock free?

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

### Is シフカレ free?

シフカレ is free to download, with no in-app purchases.

### Do NyanLock or シフカレ have ads?

Neither NyanLock nor シフカレ shows ads.

### Which is updated more often, NyanLock or シフカレ?

NyanLock ships an update every 4 days, and シフカレ every 4 days. Most recently, NyanLock was updated on October 9, 2026 and シフカレ on October 9, 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.*