# ZEISS Activate vs Terragene Technical Assistance

The clearest difference is update cadence: Terragene Technical Assistance at every 5 days against ZEISS Activate's every 7 months. Terragene Technical Assistance also leads on device support (3 vs 1) and iOS requirement (13.6 vs 17.0). On price, 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.

ZEISS Activate ships an update every 7 months, Terragene Technical Assistance every 5 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ZEISS Activate | Terragene Technical Assistance |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Size | 5 MB | 1 MB |
| Requires iOS | 17.0 | **13.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carl Zeiss AG](https://appshunter.io/developer/488066215) | [Terragene](https://appshunter.io/developer/1529466887) |

## What reviewers say

### ZEISS Activate

[App page](https://appshunter.io/ios/app/zeiss-activate/id1228179312)

**In-app purchases:** none


### Terragene Technical Assistance

[App page](https://appshunter.io/ios/app/terragene-technical-assistance/id1529466884)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZEISS Activate free?

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

### Is Terragene Technical Assistance free?

Terragene Technical Assistance is free to download, with no in-app purchases.

### Do ZEISS Activate or Terragene Technical Assistance have ads?

Neither ZEISS Activate nor Terragene Technical Assistance shows ads.

### Which is updated more often, ZEISS Activate or Terragene Technical Assistance?

ZEISS Activate ships an update every 7 months, and Terragene Technical Assistance every 5 days. Most recently, ZEISS Activate was updated on October 26, 2026 and Terragene Technical Assistance on October 27, 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.*