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
This is a straightforward calculator application designed for ease of use and clear readability. Users can personalize the app's appearance by choosing their preferred background and display themes.
- Easy to use interface
- Clear display
- Customizable background
- Customizable display themes
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Calculator-- is a simple calculator that is easy to use and read. Select the desired background and display. If you like this app, please consider giving it a rating. Your support will help keep the updates coming! Thank you for your support!
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 in-app purchases: Calculator at none against One Hand Simple Calculator's 1. Calculator also leads on ratings volume (916 vs 30). One Hand Simple Calculator's advantage is update cadence (every 3 weeks vs every 13 months) and review sentiment (100% vs 80%). On price, rating, 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.
On the App Store both sit at effectively the same score — 4.7 for Calculator against 4.7 for One Hand Simple Calculator. That said, the two scores are not equally well evidenced: Calculator has 916 ratings behind it against 30, so its average is the more settled of the two. Written reviews are what separate them: 80% of Calculator's written reviews are positive against 100% of One Hand Simple Calculator's.
Calculator ships an update every 13 months, One Hand Simple Calculator every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Calculator | One Hand Simple Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (916 ratings) | 4.7 (30 ratings) — better |
| Positive reviews | 79.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 916 — better | 30 |
| Update frequency | Every 13 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 | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Horizon Business, Inc. | Shigeo Fukuda |
Customer experience
Calculator
One Hand Simple Calculator
Bugs and requests
Calculator
Reported bugs
2 issues- Sound toggle switch doesn't work to turn off sounds
- App crashes or freezes on some devices
Requested features
3 requests- Add percentage and other advanced math functions
- Allow landscape mode
- Add option to turn off button sounds
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
