Jumbo Calculator vs Calculator%.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jumbo Calculator
This app offers a straightforward large-button calculator experience, ideal for quick calculations. It includes intuitive gestures for editing and accessibility features like VoiceOver support.
- Large, easy-to-read buttons
- Swipe for backspace
- Double tap to copy/paste
- Landscape mode calculator
- VoiceOver support
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Jumbo Calculator is the super simple large-buttoned calculator for everyone. While you can't feel the exquisite texture of its large plastic buttons (and the included solar panel doesn't actually charge your battery), Jumbo Calculator succeeds at its main purposes: adding, subtracting, multiplying, and dividing. Features: · Easy to read and find buttons (you might be able to touch type on a touchscreen). · Simple gestures for backspace (swipe the calculator screen) and copy & paste (double tap). · A smaller version of the calculator in landscape for when you're too tired to stretch your fingers. · VoiceOver support for blind and low-vision users.
Calculator%.
This app offers a straightforward calculator with a large display and oversized buttons for easy operation. It's designed for everyday tasks, enabling users to perform fundamental arithmetic like addition, subtraction, multiplication, and division with clarity and convenience.
- Big display and buttons
- Easy to use
- Basic calculations
- Clear display format
- Intuitive design
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Simple calculator with big display and button. Easy to use for daily work. Perform basic calculations such as addition, subtraction, multiplication, and division. Characteristics : - A clear display format and easy to read. - An intuitive and attractive design that facilitates calculations every day.
Screenshots
Verdict
The clearest difference is rating: Calculator%. at 4.4 against Jumbo Calculator's 3.6. Calculator%. also leads on ratings volume (4.2K vs 76) and review sentiment (61% vs 50%). Jumbo Calculator's advantage is ads (none vs shown) and update cadence (monthly vs every 3 months). On price 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.
Calculator%. holds the better App Store score, 4.4 against 3.6. That said, the two scores are not equally well evidenced: Calculator%. has 4.2K ratings behind it against 76, so its average is the more settled of the two. Written reviews point the same way: 50% of Jumbo Calculator's written reviews are positive against 61% of Calculator%.'s.
Jumbo Calculator ships an update monthly, Calculator%. every 3 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.
| Parameter | Jumbo Calculator | Calculator%. |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (76 ratings) | 4.4 (4.2K ratings) — better |
| Positive reviews | 49.6% of reviews | 61.2% of reviews — better |
| Number of ratings | 76 | 4.2K — better |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.3 — better | 12.1 |
| Further details — not scored | ||
| Size | 23 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Christopher Weems | UniCom Technology |
Customer experience
Jumbo Calculator
Calculator%.
User reviews
Jumbo Calculator
From 76 App Store ratingsWhat we love
- 👍 Simple and easy to use
- 💡 Large, clear buttons
- 🚀 Fast and responsive
- 🔒 No ads or distractions
Room to improve
- 🐛 Lacks basic features like percentage button
- 🔢 Limited functionality for advanced calculations
- 🧠 Does not respect order of operations
Calculator%.
From 4.2K App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Convenient for large numbers
- 💡 Helpful for solving problems
Room to improve
- 🐛 Occasional glitches and bugs
- 💸 Intrusive ads
- 🔍 Difficult to find settings/options
Bugs and requests
Jumbo Calculator
Reported bugs
2 issues- Decimal point sometimes not recognized
- Pos/Neg function not always working as expected
Requested features
4 requests- Add percentage button
- Implement scientific calculator mode
- Include memory functions
- Add option to dim display by covering solar panel
Calculator%.
Reported bugs
3 issues- App crashes when adding certain numbers
- Buttons not responsive at times
- Incorrect calculations for some operations
Requested features
3 requests- History feature
- Customizable interface
- Improved accuracy for decimal calculations
In-app purchases
Jumbo Calculator
No in-app purchases
Calculator%.
No in-app purchases
Questions
Is Jumbo Calculator free?
Is Calculator%. free?
Which has better reviews, Jumbo Calculator or Calculator%.?
Do Jumbo Calculator or Calculator%. have ads?
Which is updated more often, Jumbo Calculator or Calculator%.?
Other comparisons
