DEKRA TACS4 vs VST103Setting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DEKRA TACS4
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TACS4-Mobile This is an engineering/professional tool addressed to carriers, phone vendors and others which want to evaluate the quality of its wireless network and its device.
VST103Setting
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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
Verdict
The clearest difference is iOS requirement: DEKRA TACS4 at 11.0 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.
| Parameter | DEKRA TACS4 | VST103Setting |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 30 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | AT4 wireless S.A. | VITALSIGNS TECHNOLOGY CO., LTD. |
In-app purchases
DEKRA TACS4
No in-app purchases
VST103Setting
No in-app purchases
