No vs RedoCalc
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
No
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iCalcSpeed is a calculator app that can calculate with the fewest operations. There is no equal key and you can save time by reducing even one tap operation. The two input values are displayed as they are after calculation, so you can check calculations reliably. It has an independent memory that is always visible. There is โ button to display the information page that describes instructions. Thank you for using iCalcSpeed. (Basic operation method) A Calculation is performed each time you tap a key to enter a number or tap an operator key. A number will be entered in the cell with a white frame. If you tap an input cell without a white frame, "0" will be entered with a white frame. If you tap the operator key while the upper input cell is framed in white, the lower input cell will be framed in white and "0" will be entered. If you tap the operator key after entering a number in the lower input cell, the result will be entered in the upper input cell and "0" will be entered in the lower input cell to enter the input state. (Independent memory) [M+] key adds the calculated value to the memory cell. [M-] key subtracts the calculated value from the memory cell. [MR] key inputs a memory cell value into an input cell with a white frame. [MC] key clears the value of the memory cell. Flipping the memory cell also clears it. (Other keys) [>] key deletes the rightmost input value of the cell with a white frame. Flipping a cell with a white frame will also delete the rightmost input value. [copy] key puts the calculated value into the clipboard. [paste] key puts the clipboard value into the cell with a white border. [๏ผ Prev] key moves the calculation back one step at a time. [Next ๏ผ] key advances the calculation returned by the [๏ผ Prev] key one step at a time. (Remarks) The calculation range is โ999,999,999,999 ~ 999,999,999,999. The maximum number of digits is 12. The developer assumes no responsibility for any loss or claims by third parties which may arise from the use of this app.
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 ร.) If you tap โ=โ, 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 No's every 2 months. No'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 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.
No ships an update every 2 months, RedoCalc every 3 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.
| Parameter | No | RedoCalc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 days โ better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 9 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Takao Ichimura | Toshiyuki Kuwabara |
In-app purchases
No
No in-app purchases
RedoCalc
No in-app purchases









