Axxon vs SI
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Axxon
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Axxon by Dual Fuel offers state-of-the-art control sequences and technologies that enhance equipment performance and efficiency. With 24/7 local and cloud access, our system intelligently monitors and adjusts key building assets in real-time, optimizing Boilers, Hot Water Heaters, Tanks, Zone Valves, Residential Unit Temperatures, and more.
SI
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SI Field is the official mobile app for Sensor Industries customers and field technicians, putting real-time sensor management in the palm of your hand. WORK ORDERS โ FOR PROPERTY STAFF Stay on top of every open maintenance request at your property. View work order details, add timestamped notes, select completed action and cause, and close out jobs โ all from your phone, without logging into a desktop dashboard. SENSOR INSTALLATIONS โ FOR TECHNICIANS Sensor Industries technicians and contracted installers can follow a guided, step-by-step installation workflow: - Browse properties and select the target unit and slot - Scan or enter a device serial number for instant validation - Create the sensor assignment directly from the field - Run a live device health check to confirm the sensor is communicating - Capture and upload install photos - Review the completed assignment before leaving the site OFFLINE-FIRST SYNC No signal? No problem. Completed installs are saved locally and automatically synced when connectivity is restored. SI Field requires a valid Sensor Industries account. Contact Sensor Industries to get access.
Screenshots
Verdict
The clearest difference is update cadence: SI at every 3 days against Axxon's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Axxon ships an update every 7 months, SI every 3 days. The most recent releases landed on October 8, 2026 and September 11, 2026 respectively.
| Parameter | Axxon | SI |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 7 months | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15.1 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 26 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Dual Fuel Company LLC | Sensor Industries |
In-app purchases
Axxon
No in-app purchases
SI
No in-app purchases









