# Joylog vs DNT

The clearest difference is review sentiment: Joylog at 100% against DNT's 27%. Joylog also leads on rating (4.0 vs 3.0) and iOS requirement (10.0 vs 15.6). DNT's advantage is update cadence (every 2 months vs every 4 months) and ratings volume (33 vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Joylog holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: DNT has 33 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Joylog's written reviews are positive against 27% of DNT's.

Joylog ships an update every 4 months, DNT every 2 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Joylog | DNT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/joylog/id1457651013/reviews)** | [3.0 (33 ratings)](https://appshunter.io/ios/app/dnt/id6504674914/reviews) |
| Number of ratings | 5 | **33** |
| Positive reviews | **100.0% of reviews** | 27.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 14 MB | 25 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Joylog Tech Co.,Ltd](https://appshunter.io/developer/1457651012) | [DNT Optics, LLC](https://appshunter.io/developer/1753242385) |

## What reviewers say

### Joylog

[App page](https://appshunter.io/ios/app/joylog/id1457651013)

This app uses a smart sonar system to detect fish location, size, and depth up to 40 meters underwater. It also provides real-time information on underwater topography, water depth, and temperature, displayed on your mobile device.

**Highlights:** High-precision miniature sonar system, Detects fish location, size, and depth, Underwater topographic map generation, Real-time water depth and temperature, Mobile app integration for live data

**Features:** macOS Compatibility

**In-app purchases:** none


### DNT

[App page](https://appshunter.io/ios/app/dnt/id6504674914)

This application connects to a proprietary digital scope via Wi-Fi to provide video preview and management of recorded videos and photos. It also offers ballistic calculation settings and basic digital scope functions like video recording control and zeroing.

**Highlights:** Wi-Fi connection to digital scope, Video preview, Video recording control, Zeroing function, Recorded video/photo management, Ballistic calculation settings

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

**In-app purchases:** none


## Frequently asked questions

### Is Joylog free?

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

### Is DNT free?

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

### Which has better reviews, Joylog or DNT?

Joylog is rated higher. Joylog averages 4.0 out of 5 from 5 ratings, while DNT averages 3.0 from 33 ratings.

### Do Joylog or DNT have ads?

Neither Joylog nor DNT shows ads.

### Which is updated more often, Joylog or DNT?

Joylog ships an update every 4 months, and DNT every 2 months. Most recently, Joylog was updated on November 2, 2026 and DNT on November 5, 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.*