# Uno Calculator vs iHP48

The clearest difference is update cadence: iHP48 at monthly against Uno Calculator's every 5 months. iHP48 also leads on review sentiment (88% vs 73%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Uno Calculator against 4.6 for iHP48. Both are backed by a comparable volume of ratings — 116 and 302 respectively. Written reviews are what separate them: 73% of Uno Calculator's written reviews are positive against 88% of iHP48's.

Uno Calculator ships an update every 5 months, iHP48 monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Uno Calculator | iHP48 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (116 ratings)](https://appshunter.io/ios/app/uno-calculator/id1464736591/reviews) | **[4.6 (302 ratings)](https://appshunter.io/ios/app/ihp48/id1549608953/reviews)** |
| Number of ratings | 116 | **302** |
| Positive reviews | 73.2% of reviews | **88.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free | Free |
| Size | 96 MB | 6 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Uno Platform Inc.](https://appshunter.io/developer/1617866832) | [Alexis Lorca](https://appshunter.io/developer/1549608955) |

## 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


### iHP48

[App page](https://appshunter.io/ios/app/ihp48/id1549608953)

This app brings the powerful HP48 calculator experience to your mobile device. It offers enhanced performance, seamless file management, and a customizable interface with support for various HP calculator models. Enjoy a familiar and convenient calculator solution without needing extra hardware.

**Highlights:** Supports HP38, HP39, HP48, HP49, HP50 calculators, Haptic feedback and customizable zoom options, Seamless file transfer via iTunes and Files app, Cloud storage integration (iCloud, OneDrive, Dropbox), Object saving/loading and copy/paste functionality, Access to calculator packages, skins, and ROMs, Internal file manager and extensible settings

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent emulation of HP48
- 👍 Familiar and nostalgic feel
- 👍 Comprehensive functionality
- 👍 Customizable skins
- 👍 Haptic feedback

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🐛 Missed keystrokes when typing quickly
- 🐛 Blank or flickering display
- 🐛 Compatibility issues with newer iOS versions

**Reported bugs**

- Crashes on startup
- Inability to save state across sessions
- Incompatibility with certain iOS devices

**Requested features**

- Dark mode option
- Ability to disable haptic feedback
- Support for HP50G emulation
- Improved keyboard mapping and arrow key functionality


## Frequently asked questions

### Is Uno Calculator free?

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

### Is iHP48 free?

iHP48 is free to download, with no in-app purchases.

### Which has better reviews, Uno Calculator or iHP48?

iHP48 is rated higher. Uno Calculator averages 4.6 out of 5 from 116 ratings, while iHP48 averages 4.6 from 302 ratings.

### Do Uno Calculator or iHP48 have ads?

Neither Uno Calculator nor iHP48 shows ads.

### Which is updated more often, Uno Calculator or iHP48?

Uno Calculator ships an update every 5 months, and iHP48 monthly. Most recently, Uno Calculator was updated on October 24, 2026 and iHP48 on October 24, 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.*