# my16c vs CalcStak

The clearest difference is update cadence: my16c at fortnightly against CalcStak's every 5 months. my16c also leads on device support (3 vs 1). CalcStak's advantage is iOS requirement (17.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. my16c sells 1 one-off in-app purchase and CalcStak sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

my16c ships an update fortnightly, CalcStak every 5 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | my16c | CalcStak |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 1 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Miroslav Perovic](https://appshunter.io/developer/400748424) | [JOEL ANDREW ROSINBUM](https://appshunter.io/developer/1896305700) |

## What reviewers say

### my16c

[App page](https://appshunter.io/ios/app/my16c/id6762121583)

This app emulates a legendary programmer's calculator from the 1980s, offering cycle-accurate performance and faithful reproduction of its features. It includes base conversions, bit manipulation, RPN, and programmability, with modern conveniences like iCloud sync and a dark interface.

**Highlights:** Cycle-accurate emulation, Full base conversion (HEX, DEC, OCT, BIN), Bit operations, RPN entry, Programmable, Authentic LCD display, Word size control

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full App | $9.99 | one-time |


### CalcStak

[App page](https://appshunter.io/ios/app/calcstak/id6766592809)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific Functions | $2.99 | one-time |


## Frequently asked questions

### Is my16c free?

my16c is free to download, with in-app purchases available.

### Is CalcStak free?

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

### Do my16c or CalcStak have ads?

Neither my16c nor CalcStak shows ads.

### Which is updated more often, my16c or CalcStak?

my16c ships an update fortnightly, and CalcStak every 5 months. Most recently, my16c was updated on October 28, 2026 and CalcStak on October 28, 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.*