eFlexApp vs KTuner FlexFuel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eFlexApp
Monitor your eFlexFuel device in real-time, with features varying by device version. Adjust settings like language, temperature units, and theme. Track ethanol content, engine temperature, and more, depending on your specific eFlexFuel model.
- Real-time device monitoring
- Adjustable settings (language, temp, theme)
- Ethanol content tracking
- Engine temperature monitoring
- Device status checks
- Bluetooth connectivity
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With eFlexApp you can monitor your eFlexFuel device in real time. eFlexApp recognizes your eFlexFuel device version and offers different features with each product. The app also enables adjusting of eFlexPlus and eFlexPro devices. Change language (English, French, Finnish), temperature unit (°F/°C) and theme (light/dark). eFlexEco, eFlexBlue and eFlexFuel MONITOR: ethanol content, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment, (engine RPM in eFlexEco Firmware 11.0+) CHECK: device status eFlexPlus Direct, eFlexBlue Direct MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment CHECK: device status eFlexPlus and eFlexMoto Plus MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment ADJUST: RPM based enrichment with driving mode selection (save a custom driving mode setting created with eFlexTuner software) & cold enrichment (save a custom setting created with eFlexTuner software) CHECK: device status, startup information eFlexPro and eFlexMoto Pro MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment ADJUST: RPM based enrichment with driving mode selection (save up to three custom driving mode settings created with eFlexTuner software) & cold enrichment (save a custom setting created with eFlexTuner software) CHECK: device status, startup information eFlexApp communicates with your eFlexFuel device via Bluetooth. Permission to use Bluetooth is required. Please contact support@eflexfuel.com if you have any feedback! Developed by StepOne Tech Ltd
KTuner FlexFuel
This utility app connects to specific hardware units via Bluetooth to display real-time ethanol content and temperature. It provides essential data for users monitoring fuel mixtures.
- Bluetooth BLE connectivity
- Real-time ethanol content display
- Real-time temperature display
- Supports KTuner FlexFuel units
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The app connects to the KTuner FlexFuel units using Bluetooth BLE and displays realtime ethanol content and temperature.
Screenshots
Verdict
The clearest difference is rating: KTuner FlexFuel at 5.0 against eFlexApp's 3.4. KTuner FlexFuel also leads on update cadence (daily vs monthly) and iOS requirement (11.0 vs 15.6). eFlexApp's advantage is ratings volume (8 vs 1). On price, ads, in-app purchases and monetization model 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.
KTuner FlexFuel holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: eFlexApp has 8 ratings behind it against 1, so its average is the more settled of the two.
eFlexApp ships an update monthly, KTuner FlexFuel daily. The most recent releases landed on July 9, 2026 and August 19, 2026 respectively.
| Parameter | eFlexApp | KTuner FlexFuel |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 8 — better | 1 |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 58 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | StepOne Tech Ltd | Peter Linszter |
Customer experience
eFlexApp
KTuner FlexFuel
In-app purchases
eFlexApp
No in-app purchases
KTuner FlexFuel
No in-app purchases
