# RID Scanner vs KeyStart

The clearest difference is update cadence: RID Scanner at every 9 days against KeyStart's every 13 months. KeyStart's advantage is iOS requirement (16.6 vs 18.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RID Scanner ships an update every 9 days, KeyStart every 13 months. The most recent releases landed on September 20, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | RID Scanner | KeyStart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/keystart/id6749829964/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 13 months |
| Monetization | — | Free |
| Size | 2 MB | 24 MB |
| Requires iOS | 18.2 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Changsha Raspberry Information Technology Limited Co., Ltd.](https://appshunter.io/developer/1476491377) | [Bernhard Mitas](https://appshunter.io/developer/1802023240) |

## What reviewers say

### RID Scanner

[App page](https://appshunter.io/ios/app/rid-scanner/id6742121259)

**Features:** macOS Compatibility

**In-app purchases:** none


### KeyStart

[App page](https://appshunter.io/ios/app/keystart/id6749829964)

This utility app provides a reliable pitch tool for choirs, a cappella groups, and vocalists. Select your desired key, play the correct chord or note, and ensure your group starts singing in tune.

**Highlights:** Choir pitch tool, A cappella group support, Vocalist tuning, Key selection, Chord and note playback, Singing in tune

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

**In-app purchases:** none


## Frequently asked questions

### Is RID Scanner free?

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

### Is KeyStart free?

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

### Do RID Scanner or KeyStart have ads?

Neither RID Scanner nor KeyStart shows ads.

### Which is updated more often, RID Scanner or KeyStart?

RID Scanner ships an update every 9 days, and KeyStart every 13 months. Most recently, RID Scanner was updated on September 20, 2026 and KeyStart on September 19, 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.*