GDFF vs IceFish BT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GDFF
This professional-grade sonar device connects to your smartphone to provide real-time underwater data. It maps depth, temperature, terrain, and fish density up to 500 meters away and 40 meters deep.
- Real-time sonar technology
- Underwater mapping (depth, temp, terrain)
- Fish density and size detection
- 500m signal range
- 40m maximum depth
- Adjustable gain and multiple modes
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革钓WIFI智能探鱼器是一款专业级别的打窝船专用探鱼器，它利用最先进的声呐技术，可以实时监测船所航行位置的水深水温，地形地貌，鱼群密度和鱼群大小等信息并回传到手机上。信号有效距离达到500米，最大深度40米，100级增益调节，多种模式选择，不放过水下隐藏的每个细节，帮助广大钓友探索未知的水下世界。
IceFish BT
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This is an ice fishing fish detector app, which can display the information related to the fish detector such as underwater curve, size of fish, water grass and water temperature. It can set detection sensitivity, display background, refresh speed and other parameters. With friendly interface and convenient operation, it is a good helper for fishing lovers.
Screenshots
Verdict
The clearest difference is update cadence: GDFF at every 3 weeks against IceFish BT's every 26 months. On price, ads, in-app purchases and device support 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.
GDFF ships an update every 3 weeks, IceFish BT every 26 months. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.
| Parameter | GDFF | IceFish BT |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 3 weeks — better | Every 26 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 | 10.0 |
| Further details — not scored | ||
| Size | 41 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | 松林 赵 | 定敢 刘 |
In-app purchases
GDFF
No in-app purchases
IceFish BT
No in-app purchases
