Comparison

yACK FAST vs ST BLE Toolbox

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

Head to head

About

yACK FAST

Features

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Tool for using BlueSnap M6A wireless module, Scanfob® Brand RFID-NFC reader/writers, Scanfob® Brand BLE barcode scanners -View, and setup module parameters -Chat in STEAM mode with UART connected devices. -Show data like sensor readings, barcode/NFC/UHF scans. -Send scanner commands -Get RSSI readings from nearby BLE devices -Bluetooth Smart terminal function -Easy command history Serialio.com provides BLE app development libraries used in this app

About

ST BLE Toolbox

Features

Read full description

The ST BLE Toolbox is a user-friendly application to interact and debug ST Bluetooth Low Energy (BLE) devices. Upon launch, the app scans for BLE devices. For each device found it is possible to display advertisements and connect to it. The key features are: - Discovery peripherals - Show output of standard profiles - Show peripheral services and characteristics - Perform Read, write and notification interactions with peripherals

Screenshots

yACK FAST4 screens

ST BLE Toolbox4 screens

Verdict

The call

The clearest difference is update cadence: yACK FAST at every 2 months against ST BLE Toolbox's every 6 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

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

yACK FAST ships an update every 2 months, ST BLE Toolbox every 6 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 5 level

yACK FAST versus ST BLE Toolbox: the parameters behind the verdict, then further details
Parameter	yACK FAST	ST BLE Toolbox
Price	Free	Free
Update frequency	Every 2 months — better	Every 6 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	15.6	15.0 — better
Further details — not scored
Size	9 MB	16 MB
Age rating	4+	4+
Developer	Serialio Ltd.	STMicroelectronics

In-app purchases

None

yACK FAST

No in-app purchases

None

ST BLE Toolbox

No in-app purchases

Questions

Is yACK FAST free?

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

Is ST BLE Toolbox free?

ST BLE Toolbox is free to download, with no in-app purchases.

Do yACK FAST or ST BLE Toolbox have ads?

Neither yACK FAST nor ST BLE Toolbox shows ads.

Which is updated more often, yACK FAST or ST BLE Toolbox?

yACK FAST ships an update every 2 months, and ST BLE Toolbox every 6 months. Most recently, yACK FAST was updated on October 10, 2026 and ST BLE Toolbox on October 7, 2026.