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Comparison

KD DFU vs bCheck

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

Head to head
KD DFU
KD DFU
Free
๐Ÿ”ง Utilities
No ratingsView app โ†’
bCheck
bCheck
Free
๐Ÿ”ง Utilities
No ratingsView app โ†’
About

KD DFU

Features
Read full description

A utility to do the door lock firmware upgrade

About

bCheck

Read full description

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Screenshots

KD DFU3 screens
bCheck4 screens

Verdict

The call

The clearest difference is iOS requirement: KD DFU at 12.0 against bCheck's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท 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, bCheck monthly. The most recent releases landed on September 26, 2026 and September 28, 2026 respectively.

Scorecard1 real difference ยท 5 level
KD DFU versus bCheck: the parameters behind the verdict, then further details
ParameterKD DFUbCheck
PriceFreeFree
Update frequencyEvery 2 monthsMonthly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 โ€” better15.6
Further details โ€” not scored
Size26 MB4 MB
Age rating4+4+
DeveloperGuangzhou Kuodao Internet of Things Technology Co., Ltd.ๆ™“ๆ–Œ ๅˆ˜

In-app purchases

None

KD DFU

No in-app purchases

None

bCheck

No in-app purchases

Questions

Is KD DFU free?
KD DFU is free to download, with no in-app purchases.
Is bCheck free?
bCheck is free to download, with no in-app purchases.
Do KD DFU or bCheck have ads?
Neither KD DFU nor bCheck shows ads.
Which is updated more often, KD DFU or bCheck?
KD DFU ships an update every 2 months, and bCheck monthly. Most recently, KD DFU was updated on September 26, 2026 and bCheck on September 28, 2026.

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