Percent Error Calculator vs Simple Clock JP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Percent Error Calculator
Read full descriptionHide full description
Percent error calculator finds the relative error between the observed and true values.
Simple Clock JP
Read full descriptionHide full description
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 update cadence: Percent Error Calculator at weekly against Simple Clock JP's every 4 weeks. Percent Error Calculator also leads on iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Percent Error Calculator ships an update weekly, Simple Clock JP every 4 weeks. The most recent releases landed on October 27, 2026 and October 4, 2026 respectively.
| Parameter | Percent Error Calculator | Simple Clock JP |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 40 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Stage Coding | Kantaro Kobayashi |
In-app purchases
Percent Error Calculator
No in-app purchases
Simple Clock JP
No in-app purchases
Questions
Is Percent Error Calculator free?
Is Simple Clock JP free?
Do Percent Error Calculator or Simple Clock JP have ads?
Which is updated more often, Percent Error Calculator or Simple Clock JP?
Other comparisons
