Calculator⁻ vs One Hand Simple Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator⁻
A straightforward calculator app designed for simplicity, offering basic arithmetic operations and percentage calculations. It allows users to record and recall past results, customize colors, and enable touch sounds for a personalized experience.
- Basic arithmetic operations
- Percentage calculations
- Record and recall results
- Customizable colors
- Touch sound option
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It is a simple and easy calculator. It is a simple calculator with no complex functions at all. Features: Addition, subtraction, multiplication, division, percent operation Recording and recalling calculation results The numbers, operators, parentheses, results Custom colors Use touch sound Very useful for school children
One Hand Simple Calculator
This utility app offers a calculator designed for one-handed operation. Easily adjust button placement for left or right-hand use, resize keys, and visualize calculations. Save history and utilize a simple memo function.
- One-handed operation with adjustable key placement
- Adjustable calculator key size
- Formula visualization
- Calculation history saving
- Simple memo field
- Theme color customization
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It is a simple calculator app that can be operated with one hand. By moving the calculator key to the left or right, the problem that the button on the opposite side was too far and the thumb could not reach was solved. You can also move the calculator key to the left or right with one touch, whether you hold it with your right or left hand. Main function ・All buttons can be reached with one hand by moving the calculator keys to the left and right - Calculator key size adjustable - Visualization of calculation formulas on the way - Calculation results and formulas can be saved in history with one tap - Simple specifications without special calculation buttons - A variety of theme colors available There is also a simple memo field that can be used when you want to temporarily remember the calculation results. Perfect when you want to use the calculator with only one hand, such as holding a shopping cart at a store, holding a hanging leather on a train, etc.! The calculator key is easy to use because it has a central position with spaces on both sides, so please give it a try.
Screenshots
Verdict
The clearest difference is review sentiment: One Hand Simple Calculator at 100% against Calculator⁻'s 52%. One Hand Simple Calculator also leads on rating (4.7 vs 4.4) and update cadence (every 3 weeks vs every 2 months). Calculator⁻'s advantage is in-app purchases (none vs 1) and ratings volume (3.6K vs 30). On price, ads 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. One Hand Simple Calculator sells 1 one-off in-app purchase. Calculator⁻ asks for nothing beyond the download.
One Hand Simple Calculator holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Calculator⁻ has 3.6K ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 52% of Calculator⁻'s written reviews are positive against 100% of One Hand Simple Calculator's.
Calculator⁻ ships an update every 2 months, One Hand Simple Calculator every 3 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Calculator⁻ | One Hand Simple Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (3.6K ratings) | 4.7 (30 ratings) — better |
| Positive reviews | 52.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3.6K — better | 30 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | UniCom Technology | Shigeo Fukuda |
Customer experience
Calculator⁻
One Hand Simple Calculator
Bugs and requests
Calculator⁻
Reported bugs
3 issues- Decimal point problem: .5 becomes 5
- Button that should be 7 shows as 9 and gives 9 when used
- Percentage button does not work correctly
Requested features
3 requests- Backspace button
- Percentage button that works properly
- Arrange buttons in standard calculator layout
One Hand Simple Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator⁻
No in-app purchases
One Hand Simple Calculator
- Remove Ads$2.99
Questions
Is Calculator⁻ free?
Is One Hand Simple Calculator free?
Which has better reviews, Calculator⁻ or One Hand Simple Calculator?
Do Calculator⁻ or One Hand Simple Calculator have ads?
Which is updated more often, Calculator⁻ or One Hand Simple Calculator?
Other comparisons
