# 灰镜 vs OnlyLock

The clearest difference is in-app purchases: 灰镜 at none against OnlyLock's 2. 灰镜 also leads on iOS requirement (13.0 vs 17.0). OnlyLock's advantage is update cadence (every 3 weeks vs every 7 months) and device support. On price there is nothing between them.

Both are free to download. OnlyLock sells 2 in-app purchases, starting at $4.99 per month. 灰镜 asks for nothing beyond the download.

灰镜 ships an update every 7 months, OnlyLock every 3 weeks. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 灰镜 | OnlyLock |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Shanghai Grey Mirror Culture Media Co., Ltd](https://appshunter.io/developer/1752426911) | [凡滨 林](https://appshunter.io/developer/1826611654) |

## What reviewers say

### 灰镜

[App page](https://appshunter.io/ios/app/id6504545494)

**In-app purchases:** none


### OnlyLock

[App page](https://appshunter.io/ios/app/onlylock/id6760904628)

This app helps you reclaim your time by actively blocking distracting applications and websites. It enforces your chosen focus periods, preventing mindless scrolling and app switching to improve productivity and habit formation.

**Highlights:** App blocking, Website blocking, Time-based locking, Hardcore lock enforcement, Progress tracking, Screen time insights, Weekly recaps

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $4.99 | per month |
| Lifetime Access | $14.99 | one-time |


## Frequently asked questions

### Is 灰镜 free?

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

### Is OnlyLock free?

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

### Which is updated more often, 灰镜 or OnlyLock?

灰镜 ships an update every 7 months, and OnlyLock every 3 weeks. Most recently, 灰镜 was updated on October 7, 2026 and OnlyLock 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.*