# d4 vs TC Aurich

d4 and TC Aurich are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

d4 ships an update every 3 months, TC Aurich every 6 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | d4 | TC Aurich |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 9 MB | 44 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adrian Debbeler](https://appshunter.io/developer/1091749079) | [Felix Wansing](https://appshunter.io/developer/1145308443) |

## What reviewers say

### d4

[App page](https://appshunter.io/ios/app/d4-d5/id1091749080)

**Features:** macOS Compatibility

**In-app purchases:** none


### TC Aurich

[App page](https://appshunter.io/ios/app/tc-aurich-west/id6480366400)

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

**In-app purchases:** none


## Frequently asked questions

### Is d4 free?

d4 is free to download, with no in-app purchases.

### Is TC Aurich free?

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

### Do d4 or TC Aurich have ads?

Neither d4 nor TC Aurich shows ads.

### Which is updated more often, d4 or TC Aurich?

d4 ships an update every 3 months, and TC Aurich every 6 weeks. Most recently, d4 was updated on October 26, 2026 and TC Aurich on October 24, 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.*