# i48

> HP48GX calculator emulator for iOS devices. (iPhone/iPad app by Automagic Software Pty Ltd.)

- Source: https://appshunter.io/ios/app/i48/id329454950 (this page in markdown: same URL + `.md`)
- Developer: [Automagic Software Pty Ltd](https://appshunter.io/developer/329454953)
- Category: Productivity, Utilities
- Price: Free
- Rating: 3.50/5 from 196 App Store ratings · 142 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 4 MB
- Languages: American English
- Released: 2009-09-10
- Data updated: 2026-08-16
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/i48/id329454950/reviews.md

## What is i48?

i48 is an emulator for the HP48GX calculator, so the next time you're out and about and need to do some quick matrix calculations or work out the integral of a function, just whip out your iPhone (or iPod touch) and have at it

## Key features

- HP48GX calculator emulation
- Matrix calculations
- Function integration
- Mobile calculator
- On-the-go calculations

## What do users think of i48?

Overall sentiment: neutral

**Pros**

- 👍 Realistic HP48 emulation
- 🚀 Great functionality and features
- 💡 Useful unit conversions
- 👍 Familiar interface for HP48 users

**Cons**

- 🐛 Freezes and crashes
- 🐛 Unresponsive buttons and input issues
- 🐛 Compatibility issues with newer iOS versions
- 🔋 Performance and battery drain problems

**Commonly reported bugs**

- Memory recovery prompt not working
- Cursor keys behaving erratically
- Equation solver locking up the app
- Keyboard issues on certain devices

**Most requested features**

- Landscape mode support
- Improved display resolution and graphics
- Haptic feedback for button presses
- Ability to assign units to numbers

## Recent user reviews (10 of 142)

All indexed reviews: https://appshunter.io/ios/app/i48/id329454950/reviews.md

### 2/5 — It’s great when it works

*2026-02-21, version 1.15*

It’s a great emulator with a lot of nice features and touches.  The skins are great, and it’s really easy to set up.  The haptic feedback and responsiveness of the input are really nice.  

But for the last year or so, I’ve been having a problem where it just freezes and becomes unresponsive. It usually happens when I switch to another app and back. If I reset the CPU, it will sometimes come back, but usually it doesn’t.  Other times, the input will slow to a crawl, only accepting inputs every 2 seconds. The input will get buffered and will enter automatically at this really slow rate.  While it functions, it’s not usable. 

I really love this app, but it’s just become unusable. I’ve had to bring my real HP48 out of storage, but it’s hard having lost the portability and availability of having my HP everywhere I go.

### 1/5 — Needs Updating

*2026-01-10, version 1.15*

I loved this app, but it is not maintained and does not function under latest iOS.

### 1/5 — Buggy

*2025-11-26, version 1.15*

This thing crashes all the time. Don’t Panic

### 1/5 — Unusable now with latest iOS 18 updates

*2025-04-28, version 1.15*

Used to be great.  Now constantly turns off about every 3-4 seconds.  Totally unusable.

### 1/5 — Bad

*2025-02-21, version 1.15*

EDIT does not work on my i16 phone.  Did work on my i12.  Almost useless as is for me

### 5/5 — Needs updating

*2024-12-07, version 1.15*

The only calculator I use on iPhone. Sometimes freezes or crashes, though, needs updating

### 5/5 — I love the app

*2024-09-04, version 1.15*

This app has been great since my actual 48GX broke, and I use it often. this is the reason I give it 5 stars. that being said, while it still works on my phone, it has stopped working on my computer, where the interface is stuck, and the problem is still present if I delete and redownload the app.

### 4/5 — Library files?

*2024-01-10, version 1.15*

Is there a library out there that emulates the old Sparcom add ins to the HP68GX?

### 2/5 — Needs an update

*2023-11-21, version 1.15*

I would have given this 4 stars as I loved my HP48G, but the app has become more and more glitchy with subsequent iOS updates (ipad v16). Please help me change my rating!

### 5/5 — amazing hp 48 emulator

*2023-06-13, version 1.15*

my real calculator has developed lcd rot so having this app available has been great. please keep up the great work.

## Frequently asked questions about i48

### What does i48 do?

i48 emulates the HP48GX calculator on your iPhone or iPod touch. It allows you to perform advanced mathematical operations, such as matrix calculations and function integration, directly from your mobile device.

### What are the key features of i48?

The app's primary feature is its emulation of the HP48GX calculator. This enables users to perform complex tasks like matrix operations and calculus functions, making it a powerful tool for on-the-go calculations.

### Is i48 free to use?

Based on the provided information, i48 is a paid application. It does not feature in-app purchases or advertisements, indicating a one-time purchase model.

### What devices is i48 compatible with?

The application is designed for use on iPhones and iPod touches. Specific iOS version compatibility is not detailed, but it is intended for Apple's mobile devices.

### Who would benefit from using i48?

Students, engineers, scientists, or anyone who frequently uses or needs the functionality of an HP48GX calculator would benefit from i48. It provides convenient access to these powerful calculation tools without needing the physical calculator.

## Version history (last 5 releases)

### 1.15 — 2021-10-02

Fixes for graphical glitches on iOS 15

### 1.14 — 2020-12-28

Updated icon due to complaint from HP
Updated code to compile on the latest version of XCode

### 1.13 — 2020-09-08

This release fixes a deadlock that can occur when closing the app resulting in data corruption.

### 1.12 — 2015-10-08

Fixes for higher resolution iPhones

### 1.11 — 2014-11-04

Fixes key click on newer iOS devices

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## More apps by Automagic Software Pty Ltd

- [Mamori](https://appshunter.io/ios/app/mamori/id1497472707)
- [I Want My Bones Back](https://appshunter.io/ios/app/i-want-my-bones-back/id6756806842)

All apps by Automagic Software Pty Ltd: https://appshunter.io/developer/329454953

## Related topics

[hp 48 calculator](https://appshunter.io/ios/topics/hp-48-calculator) · [hp48](https://appshunter.io/ios/topics/hp48) · [hp48gx](https://appshunter.io/ios/topics/hp48gx) · [rpn calculator 48](https://appshunter.io/ios/topics/rpn-calculator-48) · [hp calculator](https://appshunter.io/ios/topics/hp-calculator)

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*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 2026-08-16.*