# ALAmaster Security vs Ring Sizer

The clearest difference is in-app purchases: ALAmaster Security at none against Ring Sizer's 1. ALAmaster Security also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ring Sizer sells 1 one-off in-app purchase. ALAmaster Security asks for nothing beyond the download.

ALAmaster Security ships an update monthly, Ring Sizer every 4 weeks. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ALAmaster Security | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Size | 123 MB | 62 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [LUKKENT DIGITAL COMERCIO E SERVICOS DE MONITORAMENTO LTDA](https://appshunter.io/developer/1699594137) | [Romiick LLC](https://appshunter.io/developer/1716146475) |

## What reviewers say

### ALAmaster Security

[App page](https://appshunter.io/ios/app/alamaster-security/id6612007071)

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

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-measure-app/id6778289987)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Pro | $9.99 | one-time |


## Frequently asked questions

### Is ALAmaster Security free?

ALAmaster Security 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 ALAmaster Security or Ring Sizer have ads?

Neither ALAmaster Security nor Ring Sizer shows ads.

### Which is updated more often, ALAmaster Security or Ring Sizer?

ALAmaster Security ships an update monthly, and Ring Sizer every 4 weeks. Most recently, ALAmaster Security was updated on October 7, 2026 and Ring Sizer on October 6, 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.*