Kokokitara vs RedoCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kokokitara
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Place a pin on the map and receive a notification when you pass near it. This is a useful app that allows you to share shopping notes and sightseeing spots! QR Code is a registered trademark of DENSO WAVE INCORPORATED.
RedoCalc
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This is a calculator for people who only use it for simple calculations, such as adding up receipts or calculating the cost of a meal split between several people, but who are always worried about whether the input was correct. As it is a simple calculator, the only operations it can perform are - Four arithmetic operations (addition, subtraction, multiplication, division) - Percentage calculations (including calculations such as consumption tax using percentages) . The results are displayed as numbers with a digit symbol. There is no complicated exponential display. The calculation proceeds in the order of the keys you enter. There is no priority for multiplication or division. The formulas you enter are displayed in order in the upper area as a history. If you tap the white part, it will turn yellow and you will be able to modify that part. (You can modify not only numbers, but also arithmetic symbols such as + and ×.) If you tap “=”, the expressions from the first line to the last line will be recalculated. The result will be automatically copied, so you can switch to other apps and paste the value there.
Screenshots
Verdict
The clearest difference is update cadence: Kokokitara at daily against RedoCalc's every 3 days. 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.
Kokokitara ships an update daily, RedoCalc every 3 days. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.
| Parameter | Kokokitara | RedoCalc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 3 days |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 17.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 4 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Koyu Tanigawa | Toshiyuki Kuwabara |
In-app purchases
Kokokitara
No in-app purchases
RedoCalc
No in-app purchases









