# Mebridge vs Kidou

The clearest difference is in-app purchases: Mebridge at none against Kidou's 1. Mebridge also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Kidou's advantage is ads (none vs shown) and update cadence (fortnightly vs every 28 months). On price there is nothing between them.

Both are free to download. Kidou sells 1 one-off in-app purchase. Mebridge asks for nothing beyond the download.

Mebridge ships an update every 28 months, Kidou fortnightly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Mebridge | Kidou |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 28 months | **Fortnightly** |
| Size | 24 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Planetfru](https://appshunter.io/developer/1639048127) | [kazunari aoki](https://appshunter.io/developer/6774180811) |

## What reviewers say

### Mebridge

[App page](https://appshunter.io/ios/app/mebridge-diary-notes/id6502261563)

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

**In-app purchases:** none


### Kidou

[App page](https://appshunter.io/ios/app/kidou-grow-a-solar-system/id6790350656)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Planetarium Pass | $6.99 | one-time |


## Frequently asked questions

### Is Mebridge free?

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

### Is Kidou free?

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

### Do Mebridge or Kidou have ads?

Mebridge shows ads; Kidou does not.

### Which is updated more often, Mebridge or Kidou?

Mebridge ships an update every 28 months, and Kidou fortnightly. Most recently, Mebridge was updated on October 25, 2026 and Kidou 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.*