# MagicLockBox vs Ring Sizer

The clearest difference is in-app purchases: MagicLockBox at none against Ring Sizer's 6. MagicLockBox also leads on device support (4 vs 2). Ring Sizer's advantage is update cadence (every 4 days vs every 2 months) and iOS requirement (13.4 vs 15.6). On price and ads there is nothing between them.

Both are free to download. Ring Sizer sells 6 in-app purchases, starting at $2.99 per 7 days. MagicLockBox asks for nothing beyond the download.

MagicLockBox ships an update every 2 months, Ring Sizer every 4 days. The most recent releases landed on September 24, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | MagicLockBox | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 3 MB | 46 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SYSTEM DESIGN CORP](https://appshunter.io/developer/510277744) | [Fabrizio Beccaceci](https://appshunter.io/developer/1772065340) |

## What reviewers say

### MagicLockBox

[App page](https://appshunter.io/ios/app/magiclockbox/id1593575098)

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

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-your-ring-size/id6736466968)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Pro | $2.99 | per 7 days |
| Ring Sizer Pro | $5.99 | per month |
| Ring Sizer Pro | $6.99 | per month |
| Ring Sizer Pro | $29.99 | per year |
| RingSizer Lifetime | $14.99 | one-time |
| RingSizer Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is MagicLockBox free?

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

### Is Ring Sizer free?

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

### Do MagicLockBox or Ring Sizer have ads?

Neither MagicLockBox nor Ring Sizer shows ads.

### Which is updated more often, MagicLockBox or Ring Sizer?

MagicLockBox ships an update every 2 months, and Ring Sizer every 4 days. Most recently, MagicLockBox was updated on September 24, 2026 and Ring Sizer on September 14, 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.*