# Jumbo Calculator

> Simple large-button calculator for basic arithmetic with accessibility features. (iPhone/iPad app by Christopher Weems.)

- Source: https://appshunter.io/ios/app/jumbo-calculator/id361121377 (this page in markdown: same URL + `.md`)
- Developer: [Christopher Weems](https://appshunter.io/developer/319461222)
- Category: Utilities, Productivity
- Price: Free
- Rating: 3.58/5 from 78 App Store ratings · 250 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.3 · 23 MB
- Languages: English, French, Italian, Japanese
- Released: 2010-04-10
- Data updated: 2026-07-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/jumbo-calculator/id361121377/reviews.md

## What is Jumbo Calculator?

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.

## Key features

- Large, easy-to-read buttons
- Swipe for backspace
- Double tap to copy/paste
- Landscape mode calculator
- VoiceOver support

## What do users think of Jumbo Calculator?

Overall sentiment: positive

**Pros**

- 👍 Simple and easy to use
- 💡 Large, clear buttons
- 🚀 Fast and responsive
- 🔒 No ads or distractions

**Cons**

- 🐛 Lacks basic features like percentage button
- 🔢 Limited functionality for advanced calculations
- 🧠 Does not respect order of operations

**Commonly reported bugs**

- Decimal point sometimes not recognized
- Pos/Neg function not always working as expected

**Most requested features**

- Add percentage button
- Implement scientific calculator mode
- Include memory functions
- Add option to dim display by covering solar panel

## Recent user reviews (10 of 250)

All indexed reviews: https://appshunter.io/ios/app/jumbo-calculator/id361121377/reviews.md

### 5/5 — Best calculator in the world

*2024-07-30, version 1.4*

Best calculator in the world

### 5/5 — From family

*2024-03-27, version 1.4*

We like it.

### 5/5 — kbjhwedxcj oh wed j hbk weh jodxvwe bhjdxveb kwhjdcxk jbhewcdkjnbheqxnbuhdceqnbuhkdcq

*2023-03-08, version 1.4*

Andy boyfriend xewuhhk dcnxhjewdvxghkunwedvgnkhuwefnvkxughewnugfkhfxnebjhffxjkbghewrfnuhgfewnghuvexwgunihffbixguhwerf bhuixwenbhuirfxeqnuhibffnhiuhxwefnhhuifenhuigtrugybrcwtggnrcwfngubgycwrngcwiryhnbffucibwefunghibcfwenbiuhgncuibhwergcunhibwerngghuigcnbuiwegrcwbnuihcweriubhngcewnibuhrgcbniuhwrribnhugcewnbhiufgcwenbuyifgnhebuciwrcbnuhfcwenbrihufcwernbuhixfgnbuhiwec bhuicrfnbwuheirg byiucwe ibuhfweguihb Rocco egyuigr uwetbbnurwcfgnuiwrfiu bvccwefg iunrbhf

### 5/5 — Very good

*2023-02-05, version 1.4*

Can calculate

### 3/5 — ADS

*2022-07-30*

App is nice but the ADS BELOW👎🏼

### 3/5 — It does have adverts.

*2022-06-16, version 1.4*

The advert bar appears at the screen, which is anoying

### 1/5 — Ads!!!

*2022-03-30, version 1.4*

This would be a great app if it wasn’t for the ads. I would gladly pay for it if it was ad-free.

### 5/5 — God

*2022-03-06, version 1.4*

God

### 5/5 — Awesome

*2021-11-01, version 1.4*

I just want a simple calculator😀  no need scientific or mathematics functions. This is good and button is big. Why for iPad only and not for handphone.

### 1/5 — Keyboard input is not working anymore, all of a sudden..

*2021-06-21, version 1.4*

I have checked to make sure that all the keys on my iPad Smart Keyboard are functional. They are. I can input numbers and the C button using my keyboard, but the - and + buttons all of a sudden stopped working. Has this happened to anyone else?

Developer? What say you?

## Frequently asked questions about Jumbo Calculator

### What does Jumbo Calculator do?

Jumbo Calculator is a simple application designed for basic arithmetic operations like adding, subtracting, multiplying, and dividing. It features large buttons for easy visibility and use.

### What are the key features of Jumbo Calculator?

Key features include large, easy-to-read buttons, intuitive gestures for backspace (swipe) and copy/paste (double tap), a smaller landscape mode, and VoiceOver support for blind and low-vision users.

### Is Jumbo Calculator free to use?

Yes, Jumbo Calculator is a free application. It does not feature in-app purchases or advertisements.

### What devices is Jumbo Calculator compatible with?

While specific OS versions are not detailed, the app is designed for mobile devices and includes VoiceOver support, indicating compatibility with iOS devices. The landscape mode suggests it functions on both phones and tablets.

### Who would benefit from using Jumbo Calculator?

This app is ideal for anyone who prefers a straightforward calculator with large, easy-to-hit buttons. It's particularly beneficial for users who need enhanced accessibility features like VoiceOver.

## Version history (last 5 releases)

### 1.4 — 2020-09-19

• Improvements for iPadOS 14

### 1.3.1 — 2019-02-22

• Split-screen multitasking support
• Improvements for iPad Pro 11" & 12.9" (3rd Generation)

### 1.3 — 2016-09-28

- Support for iOS 10.
- Slight performance upgrade for 64-bit devices.
- Keyboard no longer shifts when loading ads.

### 1.2.1 — 2013-04-22

• Fixes a bug when upgrading to Jumbo Calculator Plus.

New in 1.2:
• Copy and Paste by double tapping the calculator display.
• Jumbo Calculator is now ad-supported. (see note below)
• Pressing clear while entering a calculation now only clears the last entered term instead of your entire calculation.
• Larger font in portrait mode. (Put your glasses away, the original Jumbo font is back!)
• VoiceOver support for blind and low vision users. (Available in English & Italian.)
• Much improved support for international number formats.
• Fixes a keyboard delay after a period of inactivity.
• Decimal input is no longer limited to 6 decimal places.
• Multiplying or dividing a string of numbers now updates the screen mid calculation.
• Calculator memory is no longer cleared when screen locks and "Clear Calculator On Launch" is enabled.
• Fixes a bug with Jumbo Calculator losing connection to a Bluetooth keyboard.
• Localized for Italian speakers.

***Jumbo Calculator is now ad-supported. While there are now banner ads at the bottom of the screen, Jumbo will never resort to popup ads when you launch the app, nor will it ever have large blinking ads that interrupt you while calculating. If you prefer an ad-free experience, Jumbo Calculator Plus is available on the App Store for $0.99.

### 1.2 — 2013-04-15

• Copy and Paste by double tapping the calculator display.
• Jumbo Calculator is now ad-supported. (see note below)
• Pressing clear while entering a calculation now clears only the last entered term instead of your entire calculation.
• Larger font in portrait mode. (Put your glasses away, the original Jumbo font is back!)
• VoiceOver support for blind and low vision users. (Available in English & Italian.)
• Much improved support for international number formats.
• Fixes a keyboard delay after a period of inactivity.
• Decimal input is no longer limited to 6 decimal places.
• Multiplying or dividing a string of numbers now updates the screen mid calculation.
• Calculator memory is no longer cleared when screen locks and "Clear Calculator On Launch" is enabled.
• Fixes a bug with Jumbo Calculator losing connection to a Bluetooth keyboard.
• Localized for Italian speakers.

***Jumbo Calculator is now ad-supported. While there are now banner ads at the bottom of the screen, Jumbo will never resort to popup ads when you launch the app, nor will it ever have large blinking ads that interrupt you while calculating. If you prefer an ad-free experience, Jumbo Calculator Plus is available on the App Store for $0.99. 

****If you are a teacher using Jumbo Calculator in your classroom, email me at educators@christopherweems.com from your school email address for information on how to receive a free and ad-free version of Jumbo Calculator.

## Apps similar to Jumbo Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Calculator%.](https://appshunter.io/ios/app/calculator/id980603448) | 4.4 (3,853) | Free | Utilities |
| [Calculator⁻](https://appshunter.io/ios/app/calculator/id1327796464) | 4.4 (3,445) | Free | Utilities |
| [Amber Calculator NoAds](https://appshunter.io/ios/app/amber-calculator-noads/id1073442866) | 5.0 (9) | Free | Utilities |
| [Calc Pro HD – iPad Calculator](https://appshunter.io/ios/app/calc-pro-hd-ipad-calculator/id457004119) | 4.7 (1,445) | Free | Utilities |
| [Calculator·](https://appshunter.io/ios/app/calculator/id554836784) | 4.9 (33,310) | Free | Utilities |
| [Basic Calculator: Classic Calc](https://appshunter.io/ios/app/basic-calculator-classic-calc/id430271248) | 4.8 (3,100) | Free | Utilities |

## More apps by Christopher Weems

- [Jumbo Calculator Plus](https://appshunter.io/ios/app/jumbo-calculator-plus/id630927865)
- [Easy Grade](https://appshunter.io/ios/app/easy-grade/id637361803)
- [Countdown: Simple Timer](https://appshunter.io/ios/app/countdown-simple-timer/id1051978824)
- [Snake & Dumbiedorf](https://appshunter.io/ios/app/snake-and-dumbiedorf/id1511639354)

All apps by Christopher Weems: https://appshunter.io/developer/319461222

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-24.*