# MOSS vs JustLogger

The clearest difference is in-app purchases: MOSS at none against JustLogger's 2. MOSS also leads on ads (none vs shown). JustLogger's advantage is update cadence (every 11 days vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. JustLogger sells 2 in-app purchases, starting at $3.99 per 3 months. MOSS asks for nothing beyond the download.

MOSS ships an update every 3 months, JustLogger every 11 days. The most recent releases landed on September 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | MOSS | JustLogger |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 11 days** |
| Size | 134 MB | 9 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Via Transportation, Inc.](https://appshunter.io/developer/657777018) | [keiji matsumoto](https://appshunter.io/developer/354143756) |

## What reviewers say

### MOSS

[App page](https://appshunter.io/ios/app/moss/id6758550216)

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

**In-app purchases:** none


### JustLogger

[App page](https://appshunter.io/ios/app/justlogger/id6761726795)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Season Unlock | $3.99 | per 3 months |
| Unlock restrictions(Buy once) | $19.99 | one-time |


## Frequently asked questions

### Is MOSS free?

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

### Is JustLogger free?

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

### Do MOSS or JustLogger have ads?

JustLogger shows ads; MOSS does not.

### Which is updated more often, MOSS or JustLogger?

MOSS ships an update every 3 months, and JustLogger every 11 days. Most recently, MOSS was updated on September 25, 2026 and JustLogger on October 15, 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.*