Comparison

LeafSpy Pro vs BrightEMS

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

BrightEMS

Manage your energy storage power supply with comprehensive control over switches, charging, and power parameters. Optimize energy usage, schedule charging, and keep your device updated with the latest firmware.

Highlights
  • USB/AC/DC/LED switch control
  • Energy parameter monitoring
  • Silent and scheduled charging
  • Customizable DC charging
  • Screen and standby time settings
  • Firmware version upgrades
Features
Read full description

BrightEMS is a professional energy storage power management application designed to provide users with convenient power control. With this App, you can easily achieve comprehensive control of the power supply, including USB/AC/DC/LED switches, switch button sounds, energy management, silent charging, scheduled charging, DC charging settings, screen off time settings, standby time settings, and firmware version upgrades. This App is not only intuitive in interface and easy to operate, but also powerful in function, and can meet your full range of energy storage power needs. Main functions: USB/AC/DC/LED switches and sub-function status display: Easily control the various interface switches of the energy storage power supply, and display the working status of each interface in real time, so that you can see the power status at a glance. Switch button sound: Turn on or off the switch button sound according to personal preference to improve the user experience. Energy management: Real-time display and management of energy storage power supply parameters such as power, voltage, current, etc., to help you monitor and use the power supply more effectively. Silent charging: Turn on the silent charging mode so that the power supply does not affect your rest or work when charging. Scheduled charging: Preset charging time to avoid peak power, achieve peak charging, and save electricity bills. DC charging settings: Customize the DC charging type and maximum charging current to meet your dual needs for charging speed and battery life. Screen off time setting and standby time setting: Customize the screen off and standby time of the power supply to save energy and extend the service life. Firmware version upgrade: Receive firmware update notifications and upgrade with one click to keep your energy storage power supply at its best performance. BrightEMS App will bring you a new power supply experience. Whether you are a home user or an enterprise user, this App can help you manage and use energy storage power supplies more intelligently and conveniently.

Screenshots

LeafSpy Pro4 screens
BrightEMS4 screens

Verdict

The call

The clearest difference is price: BrightEMS at Free against LeafSpy Pro's $19.99. BrightEMS also leads on update cadence (every 3 weeks vs every 2 months). LeafSpy Pro's advantage is rating (3.5 vs 2.6) and review sentiment (46% vs 31%). On ads, in-app purchases, 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

BrightEMS 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

LeafSpy Pro holds the better App Store score, 3.5 against 2.6. That said, the two scores are not equally well evidenced: LeafSpy Pro has 114 ratings behind it against 14, 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 31% of BrightEMS's.

UpkeepUpdate frequency

LeafSpy Pro ships an update every 2 months, BrightEMS every 3 weeks. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

Scorecard7 real differences · 4 level
LeafSpy Pro versus BrightEMS: the parameters behind the verdict, then further details
ParameterLeafSpy ProBrightEMS
Price$19.99Free — better
Rating3.5 (114 ratings) — better2.6 (14 ratings)
Positive reviews45.7% of reviews — better30.6% of reviews
Number of ratings114 — better14
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#9 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size13 MB40 MB
Age rating4+4+
DeveloperJames PollockShenzhen Abisda Network Technology Co., Ltd.

Customer experience

LeafSpy Pro

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

BrightEMS

All ratings14 ratings
Positive35.7%
Neutral7.1%
Negative57.1%
Written reviews62 reviews
Positive30.6%
Neutral14.5%
Negative54.8%

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

BrightEMS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LeafSpy Pro

No in-app purchases

None

BrightEMS

No in-app purchases

Questions

Is LeafSpy Pro free?
LeafSpy Pro costs $19.99, with no in-app purchases.
Is BrightEMS free?
BrightEMS is free to download, with no in-app purchases.
Which has better reviews, LeafSpy Pro or BrightEMS?
LeafSpy Pro is rated higher. LeafSpy Pro averages 3.5 out of 5 from 114 ratings, while BrightEMS averages 2.6 from 14 ratings.
Do LeafSpy Pro or BrightEMS have ads?
Neither LeafSpy Pro nor BrightEMS shows ads.
Which is updated more often, LeafSpy Pro or BrightEMS?
LeafSpy Pro ships an update every 2 months, and BrightEMS every 3 weeks. Most recently, LeafSpy Pro was updated on September 24, 2026 and BrightEMS on September 26, 2026.

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