HyTools vs testo 330i App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HyTools
This app provides HVAC professionals with a comprehensive suite of hydronic calculation tools. It assists with tasks like valve sizing, pressure drop calculations, and radiator power estimation. The tool offers unit conversion and language selection for user convenience.
- Hydronic calculator
- Valve sizing and presetting
- Radiator power estimation
- Pipe sizing
- Unit conversion
- Pressure maintenance calculation
Read full descriptionHide full description
IMI Hydronic Engineering proudly presents HyTools, the user-friendly hydronic calculator App for HVAC professionals. Features include: - Hydronic calculator (enter any two values and get the third one): - flow - Kv/Cv - pressure drop - power - flow - temperature difference - flow - valve setting - pressure drop - Dirt and air separator pressure drop calculation - Valve sizing and presetting - Radiator power estimation (panel and column) - Radiator valve sizing and presetting - Pipe sizing - Unit conversion - Run-time selection of localisation - Run-time selection of language - Pressure maintenance and vacuum degassing calculation and selection for heating, cooling and solar systems Stay tuned for great upcoming updates adding further hydronic calculation functions. Please visit www.imi-hydronic.com for more information and contact details. Phone numbers to local support can be found here: http://www.imi-hydronic.com/en/contact/ IMI Hydronic Engineering International SA is the leading global provider and expert in hydronic distribution systems and room temperature control, with experience in more than 100,000 projects worldwide. We help our customers everywhere optimise HVAC systems so they deliver desired comfort with optimal efficiency. IMI Hydronic Engineering is part of the international engineering group IMI plc which is listed as a member of the FTSE 100 on the London Stock Exchange.
testo 330i App
Control your testo 330i flue gas analyzer remotely from your smartphone or tablet. View live measurement values, create detailed PDF reports with photos and your logo, and send them directly from the field. Offers a graphical trend view and data export options.
- Complete analyzer control via smartphone/tablet
- Intuitive touchscreen handling
- Graphical trend view
- PDF report creation
- Export measurement values (CSV, ZIV)
- Insert photos and comments into reports
- Bluetooth connectivity (20m range)
Read full descriptionHide full description
Install our free App on your smartphone / tablet for operating the new testo 330i right where you happen to be. So, the measurement values are always in sight during adjustment of the system. The report, with customer name, photos and your logo, can be sent to your office or directly to the customer as a simple and fast documentation, right after the measurement - Complete control of the analyzer testo 330i via Smartphone and tablet - Easy and intuitive handling on the touchscreen - Graphical trend view to check changes over time - Creation of PDF reports or export of measurement values in csv (Excel) or ZIV format - Report sent as an e-mail straight from the measuring location - Insert photos of the measurement site and comments into the documentation - Range of approx. 20 m without obstruction via Bluetooth (This app can be used with the testo 330i flue gas analyzer only)
Screenshots
Verdict
The clearest difference is rating: HyTools at 4.0 against testo 330i App's 3.0. HyTools also leads on update cadence (every 6 weeks vs every 4 months) and review sentiment (50% vs 38%). testo 330i App's advantage is iOS requirement (12 vs 15.0). On price, ratings volume, 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.
HyTools holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 50% of HyTools's written reviews are positive against 38% of testo 330i App's.
HyTools ships an update every 6 weeks, testo 330i App every 4 months. The most recent releases landed on September 28, 2026 and October 12, 2026 respectively.
| Parameter | HyTools | testo 330i App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (5 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 50.0% of reviews — better | 37.5% of reviews |
| Number of ratings | 5 — better | 2 |
| Update frequency | Every 6 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12 — better |
| Further details — not scored | ||
| Size | 114 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | IMI Hydronic Engineering International SA | Testo SE & Co. KGaA |
Customer experience
HyTools
testo 330i App
In-app purchases
HyTools
No in-app purchases
testo 330i App
No in-app purchases
