SAKUSHI vs Train Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SAKUSHI
Explore the fascinating world of optical illusions with this app. It features 15 different types of visual illusions for you to discover and enjoy.
- 15 optical illusion images
- Visual illusion exploration
- Entertainment app
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「錯視」・・・錯視とは、視覚に関する錯覚、つまり「目の錯覚」のことです。 このアプリはその錯視を楽しめる、15種類の錯視画像を閲覧できるアプリです。
Train Clock
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This is an app that helps you learn how to read a clock. The minute hand is a Shinkansen, the hour hand is a conventional train, and the second hand is a steam locomotive. The trains are displayed randomly. When you tap the Shinkansen icon at the bottom of the screen, the Shinkansen used as the minute hand changes to another Shinkansen. When you tap the conventional train icon, the train used as the hour hand transforms into another train. At the top of the screen, trains stop at a station at random. Every two minutes, a train departs.
Screenshots
Verdict
The clearest difference is iOS requirement: SAKUSHI at 8.0 against Train Clock's 13.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
SAKUSHI ships an update every 35 months, Train Clock every 23 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.
| Parameter | SAKUSHI | Train Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 35 months | Every 23 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 21 MB | 143 MB |
| Age rating | 4+ | 4+ |
| Developer | Yournet | hiroyuki uchida |
In-app purchases
SAKUSHI
No in-app purchases
Train Clock
No in-app purchases









