# Centercode vs National CompCalc

The clearest difference is iOS requirement: National CompCalc at 12.0 against Centercode's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Centercode ships an update every 2 months, National CompCalc every 6 weeks. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Centercode | National CompCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (10 ratings)](https://appshunter.io/ios/app/centercode/id1541400297/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 69 MB | 40 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Centercode](https://appshunter.io/developer/1541400299) | [Thomas Smith](https://appshunter.io/developer/1725182113) |

## What reviewers say

### Centercode

[App page](https://appshunter.io/ios/app/centercode/id1541400297)

Discover product testing opportunities and provide feedback on new technologies. This app simplifies participation in user tests for leading tech companies, allowing you to report bugs, share ideas, and collaborate with other testers.

**Highlights:** Participate in alpha, beta, and delta tests, Apply for exclusive testing opportunities, Access all projects from one place, Report bugs and usability issues, Share ideas for new features, Collaborate with fellow testers

**Features:** Vision Pro support

**In-app purchases:** none


### National CompCalc

[App page](https://appshunter.io/ios/app/national-compcalc/id6754295249)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Centercode free?

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

### Is National CompCalc free?

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

### Do Centercode or National CompCalc have ads?

Neither Centercode nor National CompCalc shows ads.

### Which is updated more often, Centercode or National CompCalc?

Centercode ships an update every 2 months, and National CompCalc every 6 weeks. Most recently, Centercode was updated on November 3, 2026 and National CompCalc on November 9, 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.*