Joylog vs DNT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Joylog
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.
- 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
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JOYLOG智能声呐探鱼器集成高精度微型声呐系统，可探测水下40m范围内鱼群位置，大小，深度等水下鱼情，以及水底地形图，水深，水温等信息，通过JOYLOG APP让您在手机上实时掌握水下动态。 JOYLOG smart sonar fish finder integrates high-precision miniature sonar system which can detect the location, size, depth and other underwater fish feelings within the range of 40m underwater, as well as underwater topographic map, water depth, water temperature and other information. JOYLOG APP enables you to grasp the underwater dynamics in real time on your mobile phone.
DNT
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.
- Wi-Fi connection to digital scope
- Video preview
- Video recording control
- Zeroing function
- Recorded video/photo management
- Ballistic calculation settings
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The APP can be used to connect to the our digital scope with Wi-Fi (The digital scope is manufactured by us), and has the following main functions. Video preview Basic digital scope functions, include video recording control and zeroing Recorded video/photo management Ballistic calculation settings Note: The digital scope is a pure optical tool, and our APP only do the calculation parameter settings and data management. It does not control the mechanic motion apart from our digital scope of any sort.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Joylog | DNT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (5 ratings) — better | 3.0 (33 ratings) |
| Positive reviews | 100.0% of reviews — better | 27.3% of reviews |
| Number of ratings | 5 | 33 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 14 MB | 25 MB |
| Age rating | 4+ | 17+ |
| Developer | Joylog Tech Co.,Ltd | DNT Optics, LLC |
Customer experience
Joylog
DNT
In-app purchases
Joylog
No in-app purchases
DNT
No in-app purchases
