Comparison

RSL Central 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

RSL Central

Features

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An easy-to-use app to get started with onsemi Bluetooth Low Energy wireless microcontrollers and periphery devices. RSL Central scans for and establishes a Bluetooth Low Energy connection with onsemi Bluetooth Low Energy wireless microcontrollers. The app displays fields such as measured battery level, voltage, current, LED status, push button status, or others depending on the onsemi wireless microcontroller and configuration.

About

VST103Setting

Features

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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

RSL Central4 screens

VST103Setting4 screens

Verdict

The call

The clearest difference is update cadence: VST103Setting at every 5 weeks against RSL Central's every 3 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

RSL Central ships an update every 3 months, VST103Setting every 5 weeks. The most recent releases landed on December 5, 2025 and September 4, 2026 respectively.

Scorecard1 real difference · 5 level

RSL Central versus VST103Setting: the parameters behind the verdict, then further details
Parameter	RSL Central	VST103Setting
Price	Free	Free
Update frequency	Every 3 months	Every 5 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0	14.0 — better
Further details — not scored
Size	1 MB	5 MB
Age rating	4+	4+
Developer	ON SEMICONDUCTOR CORPORATION	VITALSIGNS TECHNOLOGY CO., LTD.

In-app purchases

None

RSL Central

No in-app purchases

None

VST103Setting

No in-app purchases

Questions

Is RSL Central free?

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

Is VST103Setting free?

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

Do RSL Central or VST103Setting have ads?

Neither RSL Central nor VST103Setting shows ads.

Which is updated more often, RSL Central or VST103Setting?

RSL Central ships an update every 3 months, and VST103Setting every 5 weeks. Most recently, RSL Central was updated on December 5, 2025 and VST103Setting on September 4, 2026.