# Uno Calculator vs Programmer's Calculator

The clearest difference is in-app purchases: Uno Calculator at none against Programmer's Calculator's 1. Uno Calculator also leads on review sentiment (73% vs 62%) and device support (4 vs 2). Programmer's Calculator's advantage is ratings volume (845 vs 113) and iOS requirement (10.0 vs 14.2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Programmer's Calculator sells 1 in-app purchase, starting at $0.99 per month. Uno Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Uno Calculator against 4.7 for Programmer's Calculator. That said, the two scores are not equally well evidenced: Programmer's Calculator has 845 ratings behind it against 113, so its average is the more settled of the two. Written reviews are what separate them: 73% of Uno Calculator's written reviews are positive against 62% of Programmer's Calculator's.

Uno Calculator ships an update every 5 months, Programmer's Calculator every 6 months. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Uno Calculator | Programmer's Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (113 ratings)](https://appshunter.io/ios/app/uno-calculator/id1464736591/reviews) | **[4.7 (845 ratings)](https://appshunter.io/ios/app/programmers-calculator/id1467603958/reviews)** |
| Number of ratings | 113 | **845** |
| Positive reviews | **73.2% of reviews** | 62.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 96 MB | 21 MB |
| Requires iOS | 14.2 | **10.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Uno Platform Inc.](https://appshunter.io/developer/1617866832) | [Yuma Kitasei](https://appshunter.io/developer/1199831834) |

## What reviewers say

### Uno Calculator

[App page](https://appshunter.io/ios/app/uno-calculator/id1464736591)

This app offers a comprehensive suite of calculation tools, handling everything from basic arithmetic to complex unit conversions. It supports measurements for size, temperature, speed, energy, and currency, making it a versatile solution for diverse needs.

**Highlights:** Arithmetic calculations, Unit conversions, Size measurements, Temperature conversions, Speed calculations, Energy calculations, Currency exchange

**In-app purchases:** none

**What reviewers like**

- 💰 Completely free with no ads or in-app purchases
- 🎨 Clean, minimalist, and intuitive user interface
- 🔧 Multiple calculator modes (standard, scientific, programmer)
- 📊 Useful unit conversion features
- 📜 Helpful history and memory panes for tracking calculations

**What reviewers complain about**

- ⌨️ No keyboard input support on Mac or iPad (major recurring complaint)
- 📍 Calculator buttons positioned on left side (inconvenient for right-handed users)
- 📜 History pane cannot be hidden or minimized
- ⏱️ Slower app launch time compared to stock calculator
- 🐢 Laggy performance on macOS with slow button responsiveness

**Reported bugs**

- Standard calculator mode doesn't follow order of operations (1+2*3 = 9 instead of 7)
- Buttons disappear while using on iPad
- Apple Pencil input causes buttons to blend into background
- Slow key responsiveness on macOS
- Numeric keypad input not recognized from Apple keyboard

**Requested features**

- Keyboard input support for Mac and iPad (most requested)
- Copy and paste functionality for results and formulas
- Option to reposition calculator buttons to right side
- Ability to hide or collapse history pane
- Persistent history that saves after app closes


### Programmer's Calculator

[App page](https://appshunter.io/ios/app/programmers-calculator/id1467603958)

This application serves as a versatile calculator designed for programmers. It supports conversions and calculations across binary, decimal, and hexadecimal number systems.

**Highlights:** Binary number support, Decimal number support, Hexadecimal number support, Number system conversions, Programmer-focused calculations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium member | $0.99 | per month |

**What reviewers like**

- 🚀 Straightforward and highly functional
- 👍 Easy to use
- 💡 Useful for coding and calculations
- 👍 Practical for binary and hex operations
- 👍 Displays decimal, binary, and hex simultaneously

**What reviewers complain about**

- 🐛 Ads take too long to click out of
- 🐛 Subscription did not remove ads
- 🐛 App freezes and crashes
- 🔋 High battery consumption

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- Add octal support
- Implement RPN input mode
- Add 2's complement and bit shift functions
- Provide visual feedback on calculations
- Allow setting number of bits


## Frequently asked questions

### Is Uno Calculator free?

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

### Is Programmer's Calculator free?

Programmer's Calculator is free to download, with in-app purchases available.

### Which has better reviews, Uno Calculator or Programmer's Calculator?

Programmer's Calculator is rated higher. Uno Calculator averages 4.6 out of 5 from 113 ratings, while Programmer's Calculator averages 4.7 from 845 ratings.

### Do Uno Calculator or Programmer's Calculator have ads?

Neither Uno Calculator nor Programmer's Calculator shows ads.

### Which is updated more often, Uno Calculator or Programmer's Calculator?

Uno Calculator ships an update every 5 months, and Programmer's Calculator every 6 months. Most recently, Uno Calculator was updated on October 7, 2026 and Programmer's Calculator on October 3, 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.*