Biorhythm Plus vs Simple Clock JP
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Biorhythm Plus
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When you enter a birthday show biorhythms for today. You can also view the biorhythm of a specified date.
Simple Clock JP
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Simple Clock JP shows the current time in large, bold digits, easy to read at a glance from across the room or the stage. Just open the app and the clock is there. No setup, no complicated controls. Features - Large, easy-to-read time display - Shows hours, minutes, and seconds - Date and day of the week - Simple black background - The screen stays on while the clock is shown - On iPad, resize the window freely and place it next to your sheet music or set list app - Picture in Picture: float a compact clock over any other app - No ads, no account, no setup Use it as a desk clock, at work, at events, or on stage whenever you want to see the time in big numbers. A simple clock made for one thing: showing the time, big.
Screenshots
Verdict
The clearest difference is ads: Simple Clock JP at none against Biorhythm Plus's shown. Simple Clock JP also leads on update cadence (every 4 weeks vs every 2 months). Biorhythm Plus's advantage is iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Biorhythm Plus ships an update every 2 months, Simple Clock JP every 4 weeks. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.
| Parameter | Biorhythm Plus | Simple Clock JP |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 4 weeks โ better |
| Ads | Yes | No โ better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 24 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | DongHyeon Yun | Kantaro Kobayashi |
In-app purchases
Biorhythm Plus
No in-app purchases
Simple Clock JP
No in-app purchases
Questions
Is Biorhythm Plus free?
Is Simple Clock JP free?
Do Biorhythm Plus or Simple Clock JP have ads?
Which is updated more often, Biorhythm Plus or Simple Clock JP?
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