# Jumbo Calculator vs Calculator Smart

The clearest difference is rating: Calculator Smart at 4.7 against Jumbo Calculator's 3.6. Calculator Smart also leads on ratings volume (494 vs 78) and device support (6 vs 1). Jumbo Calculator's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price there is nothing between them.

Both are free to download. Calculator Smart sells 3 one-off in-app purchases. Jumbo Calculator asks for nothing beyond the download.

Calculator Smart holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: Calculator Smart has 494 ratings behind it against 78, so its average is the more settled of the two. Written reviews complicate that: 50% of Jumbo Calculator's written reviews are positive against 36% of Calculator Smart's, so the app with the better star average is not the one people write more warmly about.

Jumbo Calculator ships an update monthly, Calculator Smart every 4 months. The most recent releases landed on October 16, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Jumbo Calculator | Calculator Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (78 ratings)](https://appshunter.io/ios/app/jumbo-calculator/id361121377/reviews) | **[4.7 (494 ratings)](https://appshunter.io/ios/app/calculator-smart/id698030968/reviews)** |
| Number of ratings | 78 | **494** |
| Positive reviews | **49.6% of reviews** | 36.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 24 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod, Mac, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Weems](https://appshunter.io/developer/319461222) | [Miroslav Otsedarski](https://appshunter.io/developer/450091139) |

## What reviewers say

### Jumbo Calculator

[App page](https://appshunter.io/ios/app/jumbo-calculator/id361121377)

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.

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

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

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


### Calculator Smart

[App page](https://appshunter.io/ios/app/calculator-smart/id698030968)

This app offers a powerful and precise calculator for everyday math and advanced scientific computations. It features a clean interface with large buttons, supporting complex equations, multiple modes, and intuitive input methods. Personalize your experience with colorful skins and custom icons.

**Highlights:** 30+ scientific operations, Degrees and Radians support, Parentheses and nested equations, Intuitive input with slide-to-delete, Copy & Paste results, Apple Watch app and Lock Screen Widget, Colorful skins and custom icons

**Features:** Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Colorful Skins and Remove Ads | $1.99 | one-time |
| Colorful Skins | $1.99 | one-time |
| Colorful Skins for Mac app | $1.99 | one-time |


## Frequently asked questions

### Is Jumbo Calculator free?

Jumbo Calculator is free to download, with no in-app purchases.

### Is Calculator Smart free?

Calculator Smart is free to download, with in-app purchases available.

### Which has better reviews, Jumbo Calculator or Calculator Smart?

Calculator Smart is rated higher. Jumbo Calculator averages 3.6 out of 5 from 78 ratings, while Calculator Smart averages 4.7 from 494 ratings.

### Do Jumbo Calculator or Calculator Smart have ads?

Calculator Smart shows ads; Jumbo Calculator does not.

### Which is updated more often, Jumbo Calculator or Calculator Smart?

Jumbo Calculator ships an update monthly, and Calculator Smart every 4 months. Most recently, Jumbo Calculator was updated on October 16, 2026 and Calculator Smart on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*