Comparison

VBus®Touch Trainer vs ULT

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

Head to head
About

VBus®Touch Trainer

Features
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The new RESOL app VBus®Touch Trainer is ideal for all who wish to train – themselves or others – in operating RESOL controllers. The app simulates a controller in real-life operation – all sensor inputs can be fed with freely adjustable values, all relay outputs are displayed with their status and pump speed. Thus, users can follow and comprehend functions or try out controller reactions. VBus®Touch Trainer is available free of charge, the following controller are included within the app: • DeltaSol® BS/4 • DeltaSol® BX • DeltaSol® BX Plus (versions 1.xx and 2.xx) • DeltaSol® CS Plus • DeltaSol® MX (versions 1.xx and 2.xx) • DeltaSol® SL • DeltaSol® SLL • DeltaSol® SLT • DeltaSol® TT • DeltaTherm® E • DeltaTherm® HC • DeltaTherm® HC mini • DeltaTherm® HC MAX • DeltaTherm® FK • DeltaTherm® PHM • DeltaTherm® PV • DeltaSol® Fresh • TT2 All controllers in VBus®Touch Trainer run with the current firmware. Of course, all menu languages available in the “real” controller are also available in the app. Operation is really easy, buttons and controls have the same function as in the real controllers. The corresponding manuals can be downloaded from www.resol.com in many different languages. Due to the special user interface, VBus®Touch Trainer is available for the iPad and iPad mini exclusively.

About

ULT

Features
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This app can be used to perform important air extraction calculations quickly and easily.

Screenshots

ULT3 screens

Verdict

The call

The clearest difference is in-app purchases: ULT at none against VBus®Touch Trainer's 12. ULT also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement 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. VBus®Touch Trainer sells 12 one-off in-app purchases. ULT asks for nothing beyond the download.

UpkeepUpdate frequency

VBus®Touch Trainer ships an update every 7 months, ULT every 14 months. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 4 level
VBus®Touch Trainer versus ULT: the parameters behind the verdict, then further details
ParameterVBus®Touch TrainerULT
PriceFreeFree
Update frequencyEvery 7 months — betterEvery 14 months
AdsNoNo
In-app purchasesYesNo — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS14.013.0 — better
Further details — not scored
Size40 MB11 MB
Age rating4+4+
DeveloperRESOL GmbHStefan Jakschik

In-app purchases

12 purchases

VBus®Touch Trainer

One-time12
  • RESOL DeltaSol® BS/4$4.99
  • RESOL DeltaTherm® E$4.99
  • RESOL DeltaSol® TT$4.99
Show 9 more
  • RESOL DeltaSol® BX Plus$9.99
  • RESOL DeltaSol® BX$9.99
  • RESOL DeltaTherm® PV$9.99
  • RESOL DeltaTherm® PV MAX$9.99
  • RESOL DeltaTherm® HC Plus$9.99
  • RESOL DeltaSol® MX$19.99
  • RESOL DeltaTherm® HC MAX$19.99
  • RESOL FWR$19.99
  • SolarVenti SControl$64.99
None

ULT

No in-app purchases

Questions

Is VBus®Touch Trainer free?
VBus®Touch Trainer is free to download, with in-app purchases available.
Is ULT free?
ULT is free to download, with no in-app purchases.
Do VBus®Touch Trainer or ULT have ads?
Neither VBus®Touch Trainer nor ULT shows ads.
Which is updated more often, VBus®Touch Trainer or ULT?
VBus®Touch Trainer ships an update every 7 months, and ULT every 14 months. Most recently, VBus®Touch Trainer was updated on September 24, 2026 and ULT on September 10, 2026.

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