RetroClock vs Mechanical Sound ID
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RetroClock
Display customizable clock panels with various themes like digital, flip, and retro radio styles. Enjoy a selection of natural white noises with free combination playback.
- Digital clock themes
- Flip clock styles
- Retro radio clock
- Natural white noises
- Combination playback
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The application provides clock panels with various theme styles such as digital clock, flip clock, and retro radio style. It also contains a variety of natural white noises and provides free combination playback functions.
Mechanical Sound ID
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Identify machines from operating sounds ※Identified machines ・fan >air conditioner, mechanical fan ・vacuum cleaner ・printer ・microwave oven ・telephone ・hair dryer etc.
Screenshots
Verdict
The clearest difference is in-app purchases: Mechanical Sound ID at none against RetroClock's 1. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RetroClock sells 1 one-off in-app purchase. Mechanical Sound ID asks for nothing beyond the download.
RetroClock ships an update every 3 weeks, Mechanical Sound ID fortnightly. The most recent releases landed on October 27, 2026 and October 9, 2026 respectively.
| Parameter | RetroClock | Mechanical Sound ID |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 48 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | 伟 雷 | Hideaki Uchikoshi |
In-app purchases
RetroClock
- VIP$0.99
Mechanical Sound ID
No in-app purchases
Questions
Is RetroClock free?
Is Mechanical Sound ID free?
Do RetroClock or Mechanical Sound ID have ads?
Which is updated more often, RetroClock or Mechanical Sound ID?
Other comparisons
