# CMCalc vs ColorPiano Programmer

The clearest difference is review sentiment: CMCalc at 75% against ColorPiano Programmer's 0%. CMCalc also leads on rating (4.6 vs 1.0) and ratings volume (7 vs 1). ColorPiano Programmer's advantage is update cadence (every 5 weeks vs every 45 months) and iOS requirement (8.0 vs 12.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CMCalc holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: CMCalc has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 75% of CMCalc's written reviews are positive against 0% of ColorPiano Programmer's.

CMCalc ships an update every 45 months, ColorPiano Programmer every 5 weeks. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CMCalc | ColorPiano Programmer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7 ratings)](https://appshunter.io/ios/app/cmcalc/id974432836/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/colorpiano-programmer/id1395098079/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 4 MB | 12 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [William David](https://appshunter.io/developer/974432835) | [Gantom](https://appshunter.io/developer/897068888) |

## What reviewers say

### CMCalc

[App page](https://appshunter.io/ios/app/cmcalc/id974432836)

This app emulates a classic 1980s computer math calculator, offering decimal arithmetic, binary conversions, and logic functions. It supports parentheses for complex calculations and includes modern features like copy/paste and landscape mode.

**Highlights:** Decimal arithmetic, Binary conversions (decimal, binary, octal, hexadecimal), Binary logic functions, Operator grouping with parentheses, Hexadecimal input (A-F), Copy and paste results/functions, Landscape mode

**Features:** macOS Compatibility

**In-app purchases:** none


### ColorPiano Programmer

[App page](https://appshunter.io/ios/app/colorpiano-programmer/id1395098079)

Design custom light shows in real-time by tapping on your smartphone like a piano. Create mood lighting or dynamic effects. Requires specific hardware to operate.

**Highlights:** Real-time light show programming, Piano-style interface, Create mood lighting, Design fast flashy effects, Requires ColorPiano hardware

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CMCalc free?

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

### Is ColorPiano Programmer free?

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

### Which has better reviews, CMCalc or ColorPiano Programmer?

CMCalc is rated higher. CMCalc averages 4.6 out of 5 from 7 ratings, while ColorPiano Programmer averages 1.0 from 1 ratings.

### Do CMCalc or ColorPiano Programmer have ads?

Neither CMCalc nor ColorPiano Programmer shows ads.

### Which is updated more often, CMCalc or ColorPiano Programmer?

CMCalc ships an update every 45 months, and ColorPiano Programmer every 5 weeks. Most recently, CMCalc was updated on October 24, 2026 and ColorPiano Programmer on October 12, 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.*