# Program Changer vs Calculator Keyboard

The clearest difference is in-app purchases: Program Changer at none against Calculator Keyboard's 2. Program Changer also leads on iOS requirement (9.0 vs 14.0). Calculator Keyboard's advantage is ratings volume (494 vs 3) and review sentiment (77% vs 67%). On price, rating, ads and device support there is nothing between them.

Both are free to download. Calculator Keyboard sells 2 in-app purchases, starting at $0.99 per month. Program Changer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Program Changer against 4.7 for Calculator Keyboard. That said, the two scores are not equally well evidenced: Calculator Keyboard has 494 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 67% of Program Changer's written reviews are positive against 77% of Calculator Keyboard's.

## The numbers

| Metric | Program Changer | Calculator Keyboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/program-changer/id1384097207/reviews) | [4.7 (494 ratings)](https://appshunter.io/ios/app/calculator-keyboard-calku/id1546065778/reviews) |
| Number of ratings | 3 | **494** |
| Positive reviews | 66.7% of reviews | **76.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 3 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Bouwmans](https://appshunter.io/developer/1077773833) | [Supagarn Pattananuchart](https://appshunter.io/developer/1488328374) |

## What reviewers say

### Program Changer

[App page](https://appshunter.io/ios/app/program-changer/id1384097207)

This utility app allows users to send and receive MIDI Program Changes. It features a large keypad for quick patch switching and a display mode for incoming commands. It connects to all available MIDI devices and network sessions.

**Highlights:** Send MIDI Program Changes, Receive MIDI Program Changes, Large keypad for quick entry, Jump up/down with +/- keys, Display incoming Program Change numbers, Connects to all MIDI devices/networks

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculator Keyboard

[App page](https://appshunter.io/ios/app/calculator-keyboard-calku/id1546065778)

This app turns your keyboard into a powerful calculator, allowing you to perform calculations directly within any application. Avoid switching apps and copying numbers by calculating on the go, whether you're texting, taking notes, or browsing.

**Highlights:** Calculate within any app, Supports Dark Mode, Customizable decimal points, Scientific calculator functions, Calculation history access, Keyboard feedback options

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calku PRO (1 Month) | $0.99 | per month |
| Calku Pro - Lifetime | $5.99 | one-time |

**What reviewers like**

- 👍 Very useful application
- 🚀 Handy calculator within keyboard
- 💡 Innovative idea for an app
- 👍 Easy to use
- 🔒 Respects user privacy

**What reviewers complain about**

- 🐛 Cannot delete the app
- 🐛 Buggy at times
- 🐛 Non-standard division/multiplication symbols
- 🐛 Incorrect calculations
- 🐛 Doesn't work on all apps initially

**Reported bugs**

- Cannot delete the app
- App is buggy sometimes
- Non-standard division and multiplication symbols not recognized by other apps
- Incorrect calculations (e.g., 3.10 / 1000 = 0)
- App only works on Apple Mail and Notes initially

**Requested features**

- Add thousands separator for numbers
- Haptic feedback on key presses
- Option to hide computation in text box
- History button on main page
- Option for standard multiplication and division


## Frequently asked questions

### Is Program Changer free?

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

### Is Calculator Keyboard free?

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

### Which has better reviews, Program Changer or Calculator Keyboard?

Program Changer and Calculator Keyboard are both rated 4.7 out of 5 on the App Store, from 3 and 494 ratings respectively.

### Do Program Changer or Calculator Keyboard have ads?

Neither Program Changer nor Calculator Keyboard shows ads.

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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.*