eFlexApp vs Tune Delivery Network (TDN)
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
Tune Delivery Network (TDN)
This application allows users to receive custom vehicle tunes from their tuner via a compatible TDN delivery device. It facilitates the transfer of performance tuning files directly to your vehicle's tuner. A specific TDN-compatible hardware device is necessary to use this service.
- Receive custom vehicle tunes
- Works with TDN devices
- Direct tune delivery
- Requires compatible hardware
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The Tune Delivery Network app enables your TDN tuner to send you their tunes for your vehicle. An HP Tuners RTD+, MPVI3, MPVI2+, or other TDN-compatible delivery device is required. Please note that this app is designed for users who have a relationship with a tuner that is part of the TDN system, and is not intended as a solution for self-tuners or non-TDN tuners.
Screenshots
Verdict
The clearest difference is rating: eFlexApp at 3.2 against Tune Delivery Network (TDN)'s 2.5. eFlexApp also leads on review sentiment (25% vs 14%). Tune Delivery Network (TDN)'s advantage is update cadence (fortnightly vs monthly) and device support (3 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.
eFlexApp holds the better App Store score, 3.2 against 2.5. Both are backed by a comparable volume of ratings — 10 and 37 respectively. Written reviews point the same way: 25% of eFlexApp's written reviews are positive against 14% of Tune Delivery Network (TDN)'s.
eFlexApp ships an update monthly, Tune Delivery Network (TDN) fortnightly. Both last shipped on November 3, 2026.
| Parameter | eFlexApp | Tune Delivery Network (TDN) |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (10 ratings) — better | 2.5 (37 ratings) |
| Positive reviews | 25.0% of reviews — better | 14.5% of reviews |
| Number of ratings | 10 | 37 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.6 | 13.1 — better |
| Further details — not scored | ||
| Size | 53 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | StepOne Tech Ltd | HP Tuners LLC |
Customer experience
eFlexApp
Tune Delivery Network (TDN)
Bugs and requests
eFlexApp
Not enough reviews yet to summarise bugs or requests.
Tune Delivery Network (TDN)
Reported bugs
4 issues- App crashes when trying to read/clear codes or connect to device
- Fails to load tunes or read vehicle data
- Bluetooth connectivity issues prevent basic functions
- Sync and file transfer problems
Requested features
3 requests- Allow uploading tunes from tuner for personal use
- Add basic tuning functions like KAM reset and crank relearn
- Improve data log viewing and management capabilities
In-app purchases
eFlexApp
No in-app purchases
Tune Delivery Network (TDN)
No in-app purchases
Questions
Is eFlexApp free?
Is Tune Delivery Network (TDN) free?
Which has better reviews, eFlexApp or Tune Delivery Network (TDN)?
Do eFlexApp or Tune Delivery Network (TDN) have ads?
Which is updated more often, eFlexApp or Tune Delivery Network (TDN)?
Other comparisons
