Steelhead vs Trolltek
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Steelhead
This utility app allows users to connect to and configure compatible sensors via Bluetooth. It enables direct sensor diagnostics, immediate readings, and downloading of stored data for analysis.
- Bluetooth (BLE) connectivity
- Sensor configuration (add/change sensors)
- Reporting/sampling interval adjustment
- SDI-12 Transparent mode for diagnostics
- Immediate current readings
- Download stored data
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• Connect via Bluetooth (BLE) • Configuration: add/change sensors, reporting/sampling interval, and more! • SDI-12 Transparent mode: talk directly to the sensor for diagnostics • Current readings: take an immediate reading • Download stored data
Trolltek
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This is the exclusive Trolltek Bluetooth Battery Monitor APP 1) Now you can monitor your battery on your phone directly from the BMS. 2) Bluetooth connectivity to the battery management system. 3) Displays detailed battery operating information on the "DASHBOARD" tab including : State of Charge Percentage, Voltage, Current, and Battery Temperature. 4) Provides interactive functions on the "CONTROL" tab including: Charge and Discharge Battery ON/OFF control, Auto Balance, and Optional Protection and Heating Pad ON/OFF 5) The "PARAMETER" tab displays more detailed information including: Battery Name (You can set), Single Max Voltage, Single Min Voltage, Average Voltage, Pressure Difference, Cell Count, Cycle-Index. 6) If batteries are strung in parallel or series, this APP provides string information as well. 7) This APP functions through Bluetooth 5.0 8) Maximum distance of communication on a typical phone is 10 meters (30 feet) 9) APP will list batteries within signal distance on the "DEVICE" tab, and you choose which one you want to view. You may disconnect and connect to another battery on the connections tab. 10) Each battery will only allow one Bluetooth connection at a time
Screenshots
Verdict
Steelhead and Trolltek are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Steelhead ships an update every 5 weeks, Trolltek monthly. The most recent releases landed on October 17, 2026 and October 19, 2026 respectively.
| Parameter | Steelhead | Trolltek |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 75 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Stevens Water Monitoring Systems, Inc. | Scintex Pty Ltd |
In-app purchases
Steelhead
No in-app purchases
Trolltek
No in-app purchases









