KD DFU vs 固件OTA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KD DFU
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A utility to do the door lock firmware upgrade
固件OTA
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固件OTA是一款蓝牙在线升级软件，您可通过此APP升级目标设备到最新的固件版本。
Screenshots
Verdict
The clearest difference is update cadence: 固件OTA at weekly against KD DFU's every 2 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.
KD DFU ships an update every 2 months, 固件OTA weekly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | KD DFU | 固件OTA |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 26 MB | 98 MB |
| Age rating | 4+ | 4+ |
| Developer | Guangzhou Kuodao Internet of Things Technology Co., Ltd. | Shanghai AsZen Information Technology Co.,Ltd. |
In-app purchases
KD DFU
No in-app purchases
固件OTA
No in-app purchases
