# Bubble Level® vs iHP48

The clearest difference is review sentiment: iHP48 at 88% against Bubble Level®'s 33%. iHP48 also leads on in-app purchases (none vs 1) and ads (none vs shown). Bubble Level®'s advantage is iOS requirement (11.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Bubble Level® sells 1 one-off in-app purchase. iHP48 asks for nothing beyond the download.

iHP48 holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 84 and 270 respectively. Written reviews point the same way: 33% of Bubble Level®'s written reviews are positive against 88% of iHP48's.

Bubble Level® ships an update every 11 months, iHP48 monthly. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Bubble Level® | iHP48 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (84 ratings)](https://appshunter.io/ios/app/bubble-level/id1538962423/reviews) | **[4.7 (270 ratings)](https://appshunter.io/ios/app/ihp48/id1549608953/reviews)** |
| Number of ratings | 84 | **270** |
| Positive reviews | 33.3% of reviews | **88.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 48 MB | 6 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tripti Kumari](https://appshunter.io/developer/1523421832) | [Alexis Lorca](https://appshunter.io/developer/1549608955) |

## What reviewers say

### Bubble Level®

[App page](https://appshunter.io/ios/app/bubble-level/id1538962423)

This app provides a digital bubble level with multiple viewing options for precise measurements. It can be used for surface leveling, angle measurement, and checking flatness, offering versatile utility for various tasks.

**Highlights:** Surface level viewing, Portrait and landscape orientation, Angle and slope measurement in percentage, Carpenter's level functionality, Surface flatness check, Line level, Compass

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### 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 Bubble Level® free?

Bubble Level® is free to download, with in-app purchases available.

### Is iHP48 free?

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

### Which has better reviews, Bubble Level® or iHP48?

iHP48 is rated higher. Bubble Level® averages 4.4 out of 5 from 84 ratings, while iHP48 averages 4.7 from 270 ratings.

### Do Bubble Level® or iHP48 have ads?

Bubble Level® shows ads; iHP48 does not.

### Which is updated more often, Bubble Level® or iHP48?

Bubble Level® ships an update every 11 months, and iHP48 monthly. Most recently, Bubble Level® was updated on October 1, 2026 and iHP48 on October 7, 2026.

---

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