VBus®Touch Trainer vs U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VBus®Touch Trainer
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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.
U
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U-Manager is an independent third-party app to monitor and manage your Unraid server from your iPhone or iPad. Check your array, parity, CPU and RAM, browse and transfer files, and control Docker containers and virtual machines without opening the web UI. INCLUDED Dashboard - Server status in real time - CPU, RAM and disk usage - Array and cache status - Disk activity card: parity checks, rebuilds and resyncs as they run File manager - Browse, upload, download and manage server files in the app - Copy, move, delete, rename and change permissions - Search with wildcards and regular expressions - Background uploads with progress notifications Docker containers - Start, stop and restart containers - Filter and search containers - Open a container's WebUI from its card Community Applications - Browse and search the Community Applications store Shares, parity and disks - See your shares and how much space they use - Start a parity check and follow its progress Virtual machines - Start, stop, pause, resume, reboot and force stop your VMs UPS with NUT - Connect your UPS through NUT and check its status from your phone Tautulli - Plex activity, history and statistics Torrents - Works with qBittorrent and Transmission - Speeds, progress, ratio, ETA, seeds and peers in real time - Filter by state: all, active, downloading, finished, paused or error Multiple servers - Add several Unraid servers and switch between them with one tap Security - Face ID or Touch ID lock - Credentials stored encrypted on the device - No personal data collection Notifications - Read and manage your server notifications - Mark as read, archive or delete several at once OPTIONAL ADD-ONS Each add-on is a one-time purchase. The All Access subscription, monthly or yearly, includes all of them. Power Pack (requires the U-Manager Companion plugin on your server) - Live Docker stats (CPU, memory, network) - Live network card on the dashboard - Update all Docker containers at once - Install plugins and Docker apps from the CA Store - Edit and uninstall Docker containers, uninstall plugins - Create and edit user shares - SMART settings per disk and per pool File browser - Image previews and full-screen viewer - Folder and video thumbnails - Video playback in the app - Widget with the operations in progress Tautulli - End active streams with one tap - Filter history by any date range - Export history to CSV or JSON - Monthly, yearly and all-time graphs - Tautulli card on the dashboard Torrent - Open magnet links and .torrent files in U-Manager to send them to your server - Send one or several .torrent files at once - Pause, resume or remove several torrents at once - Set download and upload speed limits - Live speed chart on the dashboard REQUIREMENTS - Unraid server 6.10 or higher - API key created in Unraid Settings → Management Access - Network connection to the server (local or remote) - U-Manager Files plugin on the server for the file manager - U-Manager Companion plugin on the server for the Power Pack U-Manager is an independent project and is not affiliated with or endorsed by Lime Technology or Unraid. The name "U-Manager for Unraid" follows the naming format explicitly permitted by Lime Technology's trademark policy (unraid.net/policies). Unraid® is a trademark of Lime Technology, Inc. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://jandrop.github.io/privacy_policy/PRIVACY_POLICY.html
Screenshots
Verdict
The clearest difference is update cadence: U at weekly against VBus®Touch Trainer's every 7 months. U also leads on device support (3 vs 1). On price, ads, in-app purchases 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
Both are free to download. VBus®Touch Trainer sells 12 one-off in-app purchases and U sells 7 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
VBus®Touch Trainer ships an update every 7 months, U weekly. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.
| Parameter | VBus®Touch Trainer | U |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 7 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 40 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | RESOL GmbH | Alejandro Platas Mallo |
In-app purchases
VBus®Touch Trainer
- RESOL DeltaSol® BS/4$4.99
- RESOL DeltaTherm® E$4.99
- RESOL DeltaSol® TT$4.99
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- 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
U
- U-Manager All Access (Monthly)1 Month trial$2.991 Month
- U-Manager All Access (Annual)1 Month trial$12.991 Year
- Tautulli$1.99
- Torrent$2.49
- SSH$3.49
Show 2 moreShow fewer
- File browser$4.49
- Power Pack$6.99









