ReCalc+ vs RedoCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReCalc+
This calculator app allows for step-by-step calculations, enabling users to review their work and modify previous values. Its large display and buttons make it easy to use for quick computations.
- Step-by-step calculation display
- Edit previous calculation values
- Review calculation history
- Large buttons and display
- Intuitive design
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It is a calculator app that can recalculate later . It calculates one line at a time as calculation by writing . So You can check the calculation process , or re- calculated by changing the value from the later , you can re-use features . It is easy to see easy-to-use design with large letters and buttons .
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: RedoCalc at every 3 days against ReCalc+'s every 21 months. ReCalc+'s advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, 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.
ReCalc+ ships an update every 21 months, RedoCalc every 3 days. The most recent releases landed on September 9, 2026 and September 8, 2026 respectively.
| Parameter | ReCalc+ | RedoCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (28 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 28 — better | — |
| Update frequency | Every 21 months | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | EIICHI KOMINE | Toshiyuki Kuwabara |
In-app purchases
ReCalc+
No in-app purchases
RedoCalc
No in-app purchases









