# FoE Rechner vs Navi Red

The clearest difference is in-app purchases: FoE Rechner at none against Navi Red's 1. FoE Rechner also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.1). On price, update cadence and ads there is nothing between them.

Both are free to download. Navi Red sells 1 in-app purchase, starting at $2.99 per month. FoE Rechner asks for nothing beyond the download.

FoE Rechner ships an update monthly, Navi Red every 2 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | FoE Rechner | Navi Red |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 115 MB | 41 MB |
| Requires iOS | **15.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dennis Schidlowski](https://appshunter.io/developer/847589407) | [MATTHIAS BENDLER](https://appshunter.io/developer/1812908032) |

## What reviewers say

### FoE Rechner

[App page](https://appshunter.io/ios/app/foe-rechner/id6445990163)

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

**In-app purchases:** none


### Navi Red

[App page](https://appshunter.io/ios/app/navi-red/id6755125465)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Navi Chili Farmer | $2.99 | per month |


## Frequently asked questions

### Is FoE Rechner free?

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

### Is Navi Red free?

Navi Red is free to download, with in-app purchases available.

### Do FoE Rechner or Navi Red have ads?

Neither FoE Rechner nor Navi Red shows ads.

### Which is updated more often, FoE Rechner or Navi Red?

FoE Rechner ships an update monthly, and Navi Red every 2 weeks. Most recently, FoE Rechner was updated on October 21, 2026 and Navi Red on October 25, 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.*