RedoCalc vs SmartCalc Easy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
SmartCalc Easy
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SmartCalc - Minimalist Calculator with Precision Editing. - Premium User Experience: Enjoy a seamless experience with eye-friendly color palettes and subtle haptic feedback. - Smart History & Ans: View your entire calculation history at a glance and easily reuse previous results (Ans). - Effortless Editing: Made a mistake? Move the cursor to any part of your formula and fix it instantly—no need to start over. - Universal Compatibility: Experience a perfectly optimized layout for both iPhone and iPad environments.
Screenshots
Verdict
The clearest difference is update cadence: RedoCalc at every 3 days against SmartCalc Easy's every 3 weeks. 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.
RedoCalc ships an update every 3 days, SmartCalc Easy every 3 weeks. The most recent releases landed on September 25, 2026 and October 7, 2026 respectively.
| Parameter | RedoCalc | SmartCalc Easy |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Every 3 weeks |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Toshiyuki Kuwabara | Younghan Kim |
In-app purchases
RedoCalc
No in-app purchases
SmartCalc Easy
No in-app purchases









