Comparison

LeafSpy Pro vs Fiat

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

Head to head
About

LeafSpy Pro

Monitor your Nissan Leaf's battery health, charging history, and vehicle diagnostics. Perform dealer-level functions like changing settings and reading trouble codes. Log data and sync to Dropbox for detailed analysis.

Highlights
  • Cell pair voltage monitoring
  • Battery temperature readings
  • Battery AHr rating and capacity
  • Charging connection history
  • Diagnostic Trouble Code (DTC) reading
  • Tire pressure monitoring
  • Trip and charge logging
Features
Currently charting
Read full description

The Leaf Spy Pro allows anyone with a Nissan Leaf electric vehicle, an iOS 7.1+ device and a supported Bluetooth 4+ LE OBDII adapter (Vgate vLinker FD+ and MC+ OBDII adapters recommended) or a WiFi OBDII adapter, the ability to monitor their battery and other vehicle information normally visible only to the dealer. Support for English, Japanese, German, French, Chinese, Russian and Arabic languages. Note: The iPhone 4 and early iPads (2nd Gen) do NOT support Bluetooth 4+ LE. Currently supports 2011 to 2025 Leaf. (2026 Leaf not yet verified). Information displayed by Leaf Spy Pro: * Voltage of each of the 96 cell pairs (highlighted if shunt active) * Minimum, average, maximum cell pair voltages * Histogram of cell pair voltages * Battery Temperature readings (4 sensors for 2011/12 models, 3 for 2013 models) * Battery AHr rating (this will decease with age and is an indication of remaining capacity) * VIN * Odometer (miles or km) * Number of Quick Charge connections * Number of L1/L2 Charge connections * EVSE Max available amps * EVSE voltage * Battery energy level in GIDs & kWh * Resetable energy usage meter (Wh resolution) * Graphic display of SOC, GIDs and DTE (Distance to Empty) * Remaining distance meter (miles/km) to Event (Low Battery Warning, Very Low Battery Warning or Reserve) based on user selectable energy efficiency * Graphic display of battery temperature with min, avg, max temperatures * Tire Pressure of each of the four tires with low pressure warning and delta pressure warning alarm (not yet supported on 2018 Leaf) * Ambient Temperature * Displays climate control settings and power used. * Trip and Charge Log * Logging function that records most data and optionally GPS location to a csv file that can be easily imported into excel. * Dropbox support to sync Log files * Can run in background while connected to Leaf allowing you to use other apps. LeafSpy Pro also gives you the ability to perform functions normally requiring a visit to the dealer. * Change automatic door lock/unlock settings * Change VSP sound settings on 2013 to 2017 Leaf * Change Dash language on 2011 to 2017 Leaf * Read Diagnostic Trouble Codes (DTC) * Register Tire Positions (required after tire rotation or seasonal tire changes so your Leaf knows the correct location of each tire on the car) * Ability to reset DTCs from selected ECUs (including the DTC set when a different battery pack is installed.) * Special modes when only parts of a Leaf are used in a custom vehicle. Ability to create custom screens by creating a CSV file. See help file for definition format.

About

Fiat

Manage your FIAT vehicle remotely, access owner information, and stay informed about recalls. Connect with your dealer for service and enjoy enhanced convenience and peace of mind.

Highlights
  • Vehicle information access
  • Dealer contact and scheduling
  • Recall alerts
  • Digital owner's manual
  • Service history tracking
Features
Read full description

Whether you’re out adventuring in your FIAT® Brand vehicle, relaxing in the comfort of your home or just about anywhere else, the new FIAT app lets you stay in touch and helps keep you in control of your vehicle like never before. Need to contact your dealer? No problem, simply use the My Dealer feature to find your preferred dealership’s address, schedule service appointments, or call them directly with the touch of a button. Easily access your vehicle’s info—including the owner’s manual, service history, and more—with the My Garage and Digital Glovebox features. And stay up to date on open recalls using the Recall Alert so you’re always one step ahead. You now have access to more services than ever, ranging from entertainment to available Navigation, safety and security and more, all combining to offer new levels of convenience and the peace of mind you deserve. ©2021 FCA US LLC. All Rights Reserved. FIAT is a registered trademark of FCA US LLC.

Screenshots

LeafSpy Pro4 screens
Fiat4 screens

Verdict

The call

The clearest difference is price: Fiat at Free against LeafSpy Pro's $19.99. Fiat also leads on iOS requirement (14.0 vs 16.0). LeafSpy Pro's advantage is review sentiment (46% vs 6%) and chart position (#12 vs unranked). On rating, 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

Fiat is free to download; LeafSpy Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.5 for LeafSpy Pro against 3.7 for Fiat. Both are backed by a comparable volume of ratings — 115 and 215 respectively. Written reviews are what separate them: 46% of LeafSpy Pro's written reviews are positive against 6% of Fiat's.

UpkeepUpdate frequency

LeafSpy Pro ships an update every 2 months, Fiat monthly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 6 level
LeafSpy Pro versus Fiat: the parameters behind the verdict, then further details
ParameterLeafSpy ProFiat
Price$19.99Free — better
Rating3.5 (115 ratings)3.7 (215 ratings) — better
Positive reviews45.7% of reviews — better6.3% of reviews
Number of ratings115215 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidAd-supported — better
Best chart rank#12 — better—
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS16.014.0 — better
Further details — not scored
Size13 MB290 MB
Age rating4+4+
DeveloperJames PollockFCA US LLC

Customer experience

LeafSpy Pro

All ratings114 ratings
Positive62.3%
Neutral5.3%
Negative32.5%
Written reviews173 reviews
Positive45.7%
Neutral9.2%
Negative45.1%

Fiat

All ratings212 ratings
Positive65.1%
Neutral2.8%
Negative32.1%
Written reviews95 reviews
Positive6.3%
Neutral11.6%
Negative82.1%

User reviews

LeafSpy Pro

From 115 App Store ratings

What we love

  • 🚀 Great app!
  • 👍 Easy to use
  • 🔋 Helpful for monitoring battery health
  • 💡 Integrates with other apps
  • 👍 Vital for Leaf owners

Room to improve

  • 🐛 Doesn't work with latest iOS
  • 👎 Poor user interface
  • 🐛 Crashes frequently
  • 👎 Expensive for functionality
  • 🐛 Doesn't work with all OBD2 dongles

Fiat

From 215 App Store ratings

What we love

  • 🎮 Remote climate control functionality
  • 🔓 Door lock/unlock capability
  • 📊 Basic vehicle information display
  • ⚡ Occasional quick battery level updates
  • 🎯 Intuitive user interface when working

Room to improve

  • 🐛 Battery charge level not updating or stuck
  • ❌ Missing critical EV monitoring features
  • 🔌 Unreliable real-time vehicle status
  • 📱 Frequent app crashes and freezing
  • 🚫 Features randomly disappearing after updates

Bugs and requests

LeafSpy Pro

Reported bugs

5 issues
  • Doesn't connect via Bluetooth on iOS
  • Crashes on startup after iOS updates
  • Fails to load data despite being connected
  • Doesn't work with Mini OBD2 scanners
  • Can't change sounds on newer Leaf models

Requested features

5 requests
  • Add support for newer Leaf models
  • Improve user interface and design
  • Add Apple CarPlay integration
  • Expand compatibility with more OBD2 dongles
  • Improve documentation and in-app help

Fiat

Reported bugs

17 issues
  • Battery charge level fails to update or remains frozen
  • VIN recognition fails during vehicle registration
  • Error loading message when adding vehicles
  • App hangs during vehicle setup process
  • Login credentials not recognized after updates
Show 12 more
  • Features disappear after app updates
  • Climate control cannot be turned off once activated
  • Door lock/unlock functionality intermittently unavailable
  • Charging status not updating while charging
  • Odometer display inaccurate
  • App crashes on launch
  • QR code scanning incompatible with older UConnect versions
  • Password reset not working despite multiple attempts
  • Service records erased after update
  • Preloaded user information lost after update
  • Manual data refresh not functioning
  • Time-based update issues (PM vs AM functionality differences)

Requested features

14 requests
  • Real-time battery percentage updates
  • Vehicle location tracking on map
  • Tire pressure monitoring
  • Navigation and maps integration
  • Odometer and mileage tracking
Show 9 more
  • Door and window status display
  • Manual refresh button for vehicle data
  • Owners manual access within app
  • Charging status notifications
  • Vehicle health diagnostics
  • Preconditioning controls restoration
  • Modern app redesign (2.0 version)
  • Improved synchronization reliability
  • Better support for older vehicle models

In-app purchases

None

LeafSpy Pro

No in-app purchases

None

Fiat

No in-app purchases

Questions

Is LeafSpy Pro free?
LeafSpy Pro costs $19.99, with no in-app purchases.
Is Fiat free?
Fiat is free to download, with no in-app purchases.
Which has better reviews, LeafSpy Pro or Fiat?
Fiat is rated higher. LeafSpy Pro averages 3.5 out of 5 from 115 ratings, while Fiat averages 3.7 from 215 ratings.
Do LeafSpy Pro or Fiat have ads?
Neither LeafSpy Pro nor Fiat shows ads.
Which is updated more often, LeafSpy Pro or Fiat?
LeafSpy Pro ships an update every 2 months, and Fiat monthly. Most recently, LeafSpy Pro was updated on October 29, 2026 and Fiat on October 30, 2026.

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