FlowCheck vs ULT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlowCheck
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Full transparency at all times about your TROX drive solution and the operation of your system. The TROX Flow Check app turns your smartphone into a wireless on-site control for the latest generation of VAV, flap and valve actuators! Efficient commissioning, quick functional testing in operation, handy and always ready for service. Easily adapt when used. Document and send the setting and operating data.
ULT
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This app can be used to perform important air extraction calculations quickly and easily.
Screenshots
Verdict
The clearest difference is iOS requirement: ULT at 13.0 against FlowCheck's 16.0. 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.
FlowCheck ships an update every 15 months, ULT every 14 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.
| Parameter | FlowCheck | ULT |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 15 months | Every 14 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | TROX GmbH | Stefan Jakschik |
In-app purchases
FlowCheck
No in-app purchases
ULT
No in-app purchases
