Best Km Eflash Apps

250+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated November 2026

Out of 250+ km eflash apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Km Eflash Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1KM eFlashKM eFlashFree—NoNoSep 2026
2TuneBench: ECU TuningTuneBench: ECU TuningFree4.0★ (2)YesYesNov 2026
3ECU ConnectECU ConnectFree4.0★ (88)NoNoOct 2026
4E-Tuner 4E-Tuner 4Free3.9★ (24)NoNoOct 2026
5POWERlink SuitePOWERlink SuiteFree4.8★ (1.7K)NoNoNov 2026
6PowergatePowergateFree4.3★ (370)NoNoNov 2026
7034SPI034SPIFree4.2★ (43)NoNoNov 2026
8My Flasher USMy Flasher USFree4.4★ (7)NoNoOct 2026

Top Picks for Km Eflash

TuneBench: ECU Tuning#2

TuneBench: ECU Tuning by Chris Burchett

Read, log & flash GM LS tunes
Strong Contender
🔧 Utilities
4.0(2 ratings)
FreeAdsIn-App Purchases
TuneBench: ECU Tuning screenshot 1
TuneBench: ECU Tuning screenshot 2
TuneBench: ECU Tuning screenshot 3
TuneBench: ECU Tuning screenshot 4
TuneBench: ECU Tuning screenshot 5
TuneBench: ECU Tuning screenshot 6

Edit engine control unit (ECU) calibration files and datalogs on your mobile device. Analyze logs, make precise adjustments to tables and curves, and export your tuned files. Offers a demo mode for trying out the workflow.

4.0😐(88 ratings)
Free
ECU Connect screenshot 1
ECU Connect screenshot 2
ECU Connect screenshot 3
ECU Connect screenshot 4
ECU Connect screenshot 5

This app allows you to program tuned files directly to your car's ECU using your phone. It also provides real-time engine performance monitoring and customizable dashboards. A Bluetooth interface is required for full functionality.

What We Love

  • 👍 Great app for tuning
  • 💪 Allows map switching
  • 📱 Customizable dashboard
  • 🚀 Fast performance
  • 🔧 Works with hardware
  • 💡 Legendary technology
  • ✅ Works perfectly
  • 🌟 Amazing features
  • 💯 Game changer
  • 👍 Easy to use
  • ✅ Great customer support
  • 📈 Allows data logging
  • ⚙️ Switchable maps option
  • 💻 Desktop version features

Room to Improve

  • ⚠️ Throttle sensitivity restriction
  • 😵 Finicky flashing process
  • 🚫 No transmission logging
  • 📱 Requires phone for display
  • 🐛 Boost gauge not working
  • 🐛 No flash button
  • 🐛 Doesn't find ECU connect
  • 🐛 TPMS incompatibility
  • 🐛 Bluetooth dongle issues
  • 🐛 Old car support lacking
  • 🐛 Racerom not recognized
  • 🐛 EVI update failed
  • 🐛 Dashboard won't open
  • 🐛 Vehicle not recognized
  • 🐛 App crashes
  • 🐛 Slow loading
  • 🐛 Portrait only dashboard

More Km Eflash apps to explore

FAQ about Km Eflash

Are there free km eflash apps for iPhone?
Yes — 20 of the top km eflash apps we rank are free to download, including KM eFlash and TuneBench: ECU Tuning.
KM eFlash has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 250+ km eflash apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.