Comparison

LeafSpy Pro vs Tessie

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

Tessie

Enhance your Tesla ownership with detailed tracking, powerful automations, and real-time diagnostics. Monitor trips, battery health, charging, and receive important event notifications. Integrate with smart home systems and control your vehicle from various devices.

Highlights
  • Trip tracking
  • Battery health analytics
  • Charging and phantom drain tracking
  • Live charging view
  • Automations with schedules and triggers
  • Event notifications
  • Real-time OBD diagnostics
  • Cross-platform control (Apple Watch, Web)
Features
Read full description

Join over 500,000 Tesla drivers using Tessie to track, automate and protect their vehicles. Try it free! Requires a subscription or one-time payment. Happiness guaranteed or your money back. - Track your trips - Track your battery and compare it to others - Track charging and phantom drain - Monitor and control your Tesla using AI, including ChatGPT, Claude & Grok - Automate your Tesla using schedules and triggers - Get notified about driving, charging, Sentry events and more - Add a live charging view to your Lock Screen - View real-time OBD-level diagnostics using Profiler - Use your Apple Watch to control your Tesla - Use your Mac or PC to control your Tesla from your web browser - Integrate your Tesla with Alexa, Home Assistant, HomeKit and more Plus, import your existing data from TezLab, TeslaFi, Teslascope and TeslaMate. All data is 100% yours. View it, use it, export it or delete it. Tessie is built from the ground up for security using industry-leading best practices. Terms: tessie.com/terms Have questions or need help? Chat with us at support@tessie.com!

Screenshots

LeafSpy Pro4 screens
Tessie4 screens

Verdict

The call

The clearest difference is price: Tessie at Free against LeafSpy Pro's $19.99. Tessie also leads on rating (4.8 vs 3.5) and update cadence (weekly vs every 2 months). LeafSpy Pro's advantage is in-app purchases (none vs 17) and chart position (#12 vs unranked). On ads, device support and iOS requirement 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

Tessie is free to download; LeafSpy Pro costs $19.99 up front. Tessie sells 15 in-app purchases, starting at $3.99 per month. LeafSpy Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Tessie holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: Tessie has 9.7K ratings behind it against 115, so its average is the more settled of the two. Written reviews point the same way: 46% of LeafSpy Pro's written reviews are positive against 64% of Tessie's.

UpkeepUpdate frequency

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

Scorecard8 real differences · 3 level
LeafSpy Pro versus Tessie: the parameters behind the verdict, then further details
ParameterLeafSpy ProTessie
Price$19.99Free — better
Rating3.5 (115 ratings)4.8 (9.7K ratings) — better
Positive reviews45.7% of reviews63.9% of reviews — better
Number of ratings1159.7K — better
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#12 — better—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.0 — better16.6
Further details — not scored
Size13 MB258 MB
Age rating4+4+
DeveloperJames PollockTessie

Customer experience

LeafSpy Pro

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

Tessie

All ratings9,648 ratings
Positive94.6%
Neutral2.0%
Negative3.4%
Written reviews593 reviews
Positive63.9%
Neutral7.4%
Negative28.7%

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

Tessie

From 9.7K App Store ratings

What we love

  • 🚀 Detailed data and analytics
  • 👍 Intuitive and well-designed UI
  • 🔒 Secure and reliable connection
  • 💡 Useful Apple Watch and Alexa integration
  • 🚀 Fast and responsive app

Room to improve

  • 💰 Expensive subscription model
  • 🐛 Occasional connectivity issues
  • 🔋 High battery drain on Apple Watch
  • 🤔 Confusing setup process for some features

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

Tessie

Reported bugs

3 issues
  • Inaccurate weather data
  • Missing trip and charging history
  • Unreliable Apple Watch integration

Requested features

4 requests
  • Charging schedule and preconditioning options
  • More customization and widget support
  • Sentry mode camera access
  • Improved Apple Watch reliability

In-app purchases

None

LeafSpy Pro

No in-app purchases

15 purchases

Tessie

Subscriptions13
  • Legacy14 Days trial$3.991 Month
  • Legacy14 Days trial2 variants$4.991 Month
  • Legacy1 Month trial$4.991 Month
Show 10 more
  • Basic14 Days trial$6.991 Month
  • Pro14 Days trial$12.991 Month
  • Pro14 Days trial$14.991 Month
  • Legacy14 Days trial$39.991 Year
  • Tessie14 Days trial$49.991 Year
  • Legacy14 Days trial$49.991 Year
  • Tessie1 Month trial$69.991 Year
  • Basic14 Days trial$69.991 Year
  • Pro14 Days trial$129.991 Year
  • Pro14 Days trial$149.991 Year
One-time2
  • Legacy (Lifetime)$199.99
  • Tessie$399.99

Questions

Is LeafSpy Pro free?
LeafSpy Pro costs $19.99, with no in-app purchases.
Is Tessie free?
Tessie is free to download, with in-app purchases available.
Which has better reviews, LeafSpy Pro or Tessie?
Tessie is rated higher. LeafSpy Pro averages 3.5 out of 5 from 115 ratings, while Tessie averages 4.8 from 9.7K ratings.
Do LeafSpy Pro or Tessie have ads?
Neither LeafSpy Pro nor Tessie shows ads.
Which is updated more often, LeafSpy Pro or Tessie?
LeafSpy Pro ships an update every 2 months, and Tessie weekly. Most recently, LeafSpy Pro was updated on October 29, 2026 and Tessie on October 30, 2026.

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