# Color Vision Plates vs App Lock

The clearest difference is in-app purchases: Color Vision Plates at none against App Lock's 3. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. App Lock sells 3 in-app purchases, starting at $0.99 per month. Color Vision Plates asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Color Vision Plates against 5.0 for App Lock. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Color Vision Plates ships an update weekly, App Lock every 2 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Color Vision Plates | App Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/color-vision-plates/id6778625150/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/app-lock-lockstead/id6791830193/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 10 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [LanguageCraft](https://appshunter.io/developer/1029635130) | [桥 王](https://appshunter.io/developer/1854268559) |

## What reviewers say

### Color Vision Plates

[App page](https://appshunter.io/ios/app/color-vision-plates/id6778625150)

This app provides a 14-plate color vision screening for red-green and blue-yellow deficiencies. It uses established clinical methodologies and aims to classify the type of deficiency, offering plain-English results and a plate-by-plate review. The entire test runs offline with no sign-ups or ads.

**Highlights:** 14-plate colorblind screening, Red-green and blue-yellow deficiency classification, Ishihara and HRR-style plates, Classifier plates for specific deficiency types, Display calibration check, Offline and ad-free operation, Screening history saved on device

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

**In-app purchases:** none


### App Lock

[App page](https://appshunter.io/ios/app/app-lock-lockstead/id6791830193)

This app acts as a privacy guard and app locker for your iPhone or iPad, allowing you to select specific apps to protect with a PIN. It offers flexible rules like category blocking and guest mode, ensuring your device remains secure when shared.

**Highlights:** On-device app locking, PIN protection, Category and allow-only rules, Guest Mode, Scheduled protection windows, Face ID/Touch ID unlock, Privacy-focused design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lockstead VIP Monthly | $0.99 | per month |
| Lockstead VIP Yearly | $4.99 | per year |
| Lockstead Lifetime VIP | $7.99 | one-time |


## Frequently asked questions

### Is Color Vision Plates free?

Color Vision Plates is free to download, with no in-app purchases.

### Is App Lock free?

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

### Which has better reviews, Color Vision Plates or App Lock?

Color Vision Plates and App Lock are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Color Vision Plates or App Lock have ads?

Neither Color Vision Plates nor App Lock shows ads.

### Which is updated more often, Color Vision Plates or App Lock?

Color Vision Plates ships an update weekly, and App Lock every 2 weeks. Most recently, Color Vision Plates was updated on October 31, 2026 and App Lock on October 31, 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.*