# KMS vs Logbook Supervisor

The clearest difference is ads: Logbook Supervisor at none against KMS's shown. Logbook Supervisor also leads on update cadence (every 3 weeks vs every 2 months). KMS's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

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

KMS ships an update every 2 months, Logbook Supervisor every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KMS | Logbook Supervisor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 89 MB | 53 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Msolutions BR](https://appshunter.io/developer/1686613235) | [Faculdades INTA](https://appshunter.io/developer/1170195147) |

## What reviewers say

### KMS

[App page](https://appshunter.io/ios/app/kms-hub/id6742666650)

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

**In-app purchases:** none


### Logbook Supervisor

[App page](https://appshunter.io/ios/app/logbook-supervisor/id6797984169)

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

**In-app purchases:** none


## Frequently asked questions

### Is KMS free?

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

### Is Logbook Supervisor free?

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

### Do KMS or Logbook Supervisor have ads?

KMS shows ads; Logbook Supervisor does not.

### Which is updated more often, KMS or Logbook Supervisor?

KMS ships an update every 2 months, and Logbook Supervisor every 3 weeks. Most recently, KMS was updated on October 30, 2026 and Logbook Supervisor on October 31, 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.*