# Fuel rate monitor — DFM S7 and DFM Marine S7

> DFM S7 and DFM Marine S7 (iPhone/iPad app by TEKHNOTON INZHINIRING, OOO.)

- Source: https://appshunter.io/ios/app/fuel-rate-monitor/id1592055145 (this page in markdown: same URL + `.md`)
- Developer: [TEKHNOTON INZHINIRING, OOO](https://appshunter.io/developer/1551783573)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 8 MB
- Languages: English, Russian
- Released: 2021-12-03
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/fuel-rate-monitor/id1592055145/reviews.md

## What is Fuel rate monitor?

Receiving and processing data from wireless fuel flow meters DFM S7 and DFM Marine S7 with  FW version 5+.
This application performs analytical calculations and receives data from wireless fuel flow meters DFM S7 and DFM Marine S7, manufactured by Technoton (Republic of Belarus).
The Fuel Rate Monitor application is used to monitor hourly and total fuel consumption, temperature; cheating and interference alerts.

What can Fuel Rate Monitor application do?
- display information about the flow meter (flow meter serial number, firmware version, MAC address of the BLE sensor module)
- download and save flow meter profile to / from iOS device
- adjust the flow meter for specific operating conditions
- record and notify about cheating and interference events
- diagnose flow meter malfunctions
- log flow meter messages
- summarize the readings of the total consumption of a given group of flow meters
- display data in metric / American system of units
- save flow meter readings (total consumption, operating time) in an Record book
- control the fuel consumption in the supply and return lines of engine at once


Important! All flow meter settings are saved only in the mobile device, not in the flow meter! Please save a backup copy of the application working profile in case you plan to replace your mobile phone. Otherwise, application data and settings will be lost.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Quarterly Subscription | $3.99 | per 3 months |
| Yearly Subscription | $8.99 | per year |



## Version history (last 4 releases)

### 3.1 — 2024-02-12

Added support a new type of sensor.

### 3.0 — 2024-01-25

Now free.

### 2.0 — 2022-05-23

Added support for updating FW sensors.

### 1.0 — 2021-12-03

No release notes.

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## More apps by TEKHNOTON INZHINIRING, OOO

- [Fuel Tank monitor](https://appshunter.io/ios/app/fuel-tank-monitor/id1551783571)
- [Axle load monitor](https://appshunter.io/ios/app/axle-load-monitor/id1571497544)

All apps by TEKHNOTON INZHINIRING, OOO: https://appshunter.io/developer/1551783573

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*