# GreenTech App vs Saltis

The clearest difference is iOS requirement: Saltis at 15.1 against GreenTech App's 17.0. 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.

GreenTech App ships an update monthly, Saltis every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GreenTech App | Saltis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 58 MB | 43 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [RAI Amsterdam B.V.](https://appshunter.io/developer/1444409331) | [Saltis Limited](https://appshunter.io/developer/1895709121) |

## What reviewers say

### GreenTech App

[App page](https://appshunter.io/ios/app/greentech-app/id1586113128)

**Features:** macOS Compatibility

**In-app purchases:** none


### Saltis

[App page](https://appshunter.io/ios/app/saltis/id6764265120)

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

**In-app purchases:** none


## Frequently asked questions

### Is GreenTech App free?

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

### Is Saltis free?

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

### Do GreenTech App or Saltis have ads?

Neither GreenTech App nor Saltis shows ads.

### Which is updated more often, GreenTech App or Saltis?

GreenTech App ships an update monthly, and Saltis every 6 weeks. Most recently, GreenTech App was updated on October 27, 2026 and Saltis 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.*