Comparison

KD DFU vs VST103Setting

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

BLE Device Setting parameter

Free

🔧 Utilities

No ratingsView app →

About

KD DFU

Features

Read full description

A utility to do the door lock firmware upgrade

About

VST103Setting

Features

Read full description

1. BLE Humidity & Temperature device parameter setting tool 2. Setting the BLE Advertising period time 3. Setting Humidity & Temperature offset 4. Check FW version & update

Screenshots

KD DFU3 screens

VST103Setting4 screens

Verdict

The call

The clearest difference is iOS requirement: KD DFU at 12.0 against VST103Setting's 14.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

KD DFU ships an update every 2 months, VST103Setting every 5 weeks. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 5 level

KD DFU versus VST103Setting: the parameters behind the verdict, then further details
Parameter	KD DFU	VST103Setting
Price	Free	Free
Update frequency	Every 2 months	Every 5 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	12.0 — better	14.0
Further details — not scored
Size	26 MB	5 MB
Age rating	4+	4+
Developer	Guangzhou Kuodao Internet of Things Technology Co., Ltd.	VITALSIGNS TECHNOLOGY CO., LTD.

In-app purchases

None

KD DFU

No in-app purchases

None

VST103Setting

No in-app purchases

Questions

Is KD DFU free?

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

Is VST103Setting free?

VST103Setting is free to download, with no in-app purchases.

Do KD DFU or VST103Setting have ads?

Neither KD DFU nor VST103Setting shows ads.

Which is updated more often, KD DFU or VST103Setting?

KD DFU ships an update every 2 months, and VST103Setting every 5 weeks. Most recently, KD DFU was updated on October 12, 2026 and VST103Setting on October 6, 2026.