# LogViewer vs MJ DB

The clearest difference is price: MJ DB at Free against LogViewer's $0.99. MJ DB also leads on update cadence (every 2 days vs every 3 weeks). LogViewer's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On ads there is nothing between them.

MJ DB is free to download; LogViewer costs $0.99 up front. MJ DB sells 1 one-off in-app purchase. LogViewer asks for nothing beyond the download.

LogViewer ships an update every 3 weeks, MJ DB every 2 days. The most recent releases landed on September 11, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | LogViewer | MJ DB |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Paid | — |
| Size | 25 MB | 28 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [利龙 张](https://appshunter.io/developer/1649262253) | [wilson chung](https://appshunter.io/developer/564506285) |

## What reviewers say

### LogViewer

[App page](https://appshunter.io/ios/app/logviewer-app-log-viewer/id6739464173)

This tool allows users to easily view and manage log files in .log and .txt formats. It features log level highlighting, smart keyword search, and quick jump navigation to streamline log analysis and troubleshooting.

**Highlights:** View and manage log files, Supports .log and .txt formats, Log level highlighting, Smart keyword search, Quick jump navigation, View history records

**Features:** Vision Pro support

**In-app purchases:** none


### MJ DB

[App page](https://appshunter.io/ios/app/mj-db/id6759273739)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is LogViewer free?

LogViewer costs $0.99, with no in-app purchases.

### Is MJ DB free?

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

### Do LogViewer or MJ DB have ads?

Neither LogViewer nor MJ DB shows ads.

### Which is updated more often, LogViewer or MJ DB?

LogViewer ships an update every 3 weeks, and MJ DB every 2 days. Most recently, LogViewer was updated on September 11, 2026 and MJ DB on September 20, 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.*