Comparison

eFlexApp vs Aces Connect

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Real-time device monitoring
  • Adjustable settings (language, temp, theme)
  • Ethanol content tracking
  • Engine temperature monitoring
  • Device status checks
  • Bluetooth connectivity
Read full description

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

About

Aces Connect

Wirelessly control your engine's EFI system with real-time data monitoring and instant adjustments. Tune your engine on the fly and review detailed performance logs through an intuitive interface.

Highlights
  • Wireless Bluetooth connection
  • Real-time engine data monitoring
  • Instant tuning adjustments
  • Performance data logging
  • Customizable dashboards
Features
Read full description

The Aces Connect App gives you complete wireless control over your Aces EFI system through the Aces Bluetooth module. Whether you’re fine-tuning at the track, monitoring live engine data, or reviewing detailed logs, the app provides everything you need in a sleek, easy-to-use interface. Key Features: Wireless Connection: Pair your ACES EFI system with your iOS device via Bluetooth — no wired connection required. Real-Time Monitoring: View live engine parameters with customizable dashboards. Instant Adjustments: Make tuning changes on the fly for peak performance. Data Logging: Record, save, and review logs for performance analysis. Whether you’re a performance enthusiast or professional tuner, the ACES Mobile Tuning App puts ultimate EFI control right in your hands.

Screenshots

eFlexApp4 screens
Aces Connect4 screens

Verdict

The call

The clearest difference is review sentiment: Aces Connect at 100% against eFlexApp's 33%. Aces Connect also leads on rating (5.0 vs 3.4) and iOS requirement (13.0 vs 15.6). On price, ratings volume, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Aces Connect holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 8 and 4 respectively. Written reviews point the same way: 33% of eFlexApp's written reviews are positive against 100% of Aces Connect's.

UpkeepUpdate frequency

eFlexApp ships an update monthly, Aces Connect every 2 months. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 7 level
eFlexApp versus Aces Connect: the parameters behind the verdict, then further details
ParametereFlexAppAces Connect
PriceFreeFree
Rating3.4 (8 ratings)5.0 (4 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings8 — better4
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.613.0 — better
Further details — not scored
Size58 MB45 MB
Age rating4+17+
DeveloperStepOne Tech LtdACES FUEL INJECTION INC

Customer experience

eFlexApp

All ratings8 ratings
Positive50.0%
Neutral25.0%
Negative25.0%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Aces Connect

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

eFlexApp

No in-app purchases

None

Aces Connect

No in-app purchases

Questions

Is eFlexApp free?
eFlexApp is free to download, with no in-app purchases.
Is Aces Connect free?
Aces Connect is free to download, with no in-app purchases.
Which has better reviews, eFlexApp or Aces Connect?
Aces Connect is rated higher. eFlexApp averages 3.4 out of 5 from 8 ratings, while Aces Connect averages 5.0 from 4 ratings.
Do eFlexApp or Aces Connect have ads?
Neither eFlexApp nor Aces Connect shows ads.
Which is updated more often, eFlexApp or Aces Connect?
eFlexApp ships an update monthly, and Aces Connect every 2 months. Most recently, eFlexApp was updated on October 1, 2026 and Aces Connect on October 3, 2026.

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