# GreWi vs Nau TechTrends

The clearest difference is update cadence: Nau TechTrends at monthly against GreWi's every 22 months. Nau TechTrends also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

GreWi ships an update every 22 months, Nau TechTrends monthly. The most recent releases landed on October 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | GreWi | Nau TechTrends |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/grewi/id1071383015/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 22 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 55 MB | 33 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Andreas Mueller](https://appshunter.io/developer/1071383014) | [Nau Media AG](https://appshunter.io/developer/1434549504) |

## What reviewers say

### GreWi

[App page](https://appshunter.io/ios/app/grewi/id1071383015)

Stay updated daily with professionally curated news on anomalies, fringe science, and the paranormal. Explore topics like UFOs, extraterrestrial life, archaeology, and cryptozoology with expert interviews and an interactive map of related locations.

**Highlights:** Daily updated news, Anomalistics and fringe science, Paranormal phenomena coverage, Expert interviews, Interactive map of related locations, Social network integration

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

**In-app purchases:** none


### Nau TechTrends

[App page](https://appshunter.io/ios/app/nau-techtrends/id6473840048)

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

**In-app purchases:** none


## Frequently asked questions

### Is GreWi free?

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

### Is Nau TechTrends free?

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

### Do GreWi or Nau TechTrends have ads?

Both GreWi and Nau TechTrends show ads.

### Which is updated more often, GreWi or Nau TechTrends?

GreWi ships an update every 22 months, and Nau TechTrends monthly. Most recently, GreWi was updated on October 26, 2026 and Nau TechTrends on October 23, 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.*