4GKey vs DSP sound master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
4GKey
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4GKey手机远程控制.车辆定位,历史轨迹等..
DSP sound master
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This application use bluetooth communication to control Car DSP player and tune sound setting.
Screenshots
Verdict
The clearest difference is update cadence: 4GKey at every 2 months against DSP sound master's every 9 months. 4GKey also leads on iOS requirement (9.0 vs 13.0). 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.
4GKey ships an update every 2 months, DSP sound master every 9 months. The most recent releases landed on October 19, 2026 and October 27, 2026 respectively.
| Parameter | 4GKey | DSP sound master |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 92 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | 克勤 刘 | 师贤 陈 |
In-app purchases
4GKey
No in-app purchases
DSP sound master
No in-app purchases
