LeafSpy Pro vs Logseen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Logseen
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Your weight jumps every morning — water, food, sleep, salt. Chasing that daily number is exhausting and misleading. Logseen cuts through the noise and shows the one thing that actually matters: your real weight trend. Logseen is a clean, focused weight tracker built on a single idea — the trend line tells the truth, not any single weigh-in. Log your weight in a couple of taps and Logseen draws a smoothed trend so a heavy day never wrecks your motivation. WHY TRACK THE TREND? Daily weigh-ins bounce around for reasons that have nothing to do with real progress. Logseen averages out the day-to-day noise and shows the direction you're truly heading — so you can stay calm, stay consistent, and keep going. FEATURES • One tap to log — one clean entry per day, always your latest • A smoothed trend line that reveals your real progress • Your latest weight and your trend, side by side • Clear charts across weeks and months at a glance • Forecast the day you'll reach your goal, from your own trend • A gentle daily reminder so you never forget to weigh in • kg and lb, light and dark mode, 9 languages • Works fully offline — your data stays on your device AUTO-IMPORT FROM APPLE HEALTH Weigh in on a smart scale or log in another app? Connect Apple Health once and your weight flows into Logseen automatically — no manual typing, read-only, and only when you turn it on. (Premium) PROGRESS PHOTOS The scale never tells the whole story. Keep private progress photos next to your trend — tag front, side and back poses, filter and jump to any date, and compare then vs. now with a slider. (Premium) PRIVATE BY DESIGN Start tracking the moment you open the app — no account, no sign-up, nothing public, nothing shared. Sign in with Apple or Google only if you want to back up and sync across devices. Your photos and weights stay in your own private space — never sold, never shared, never used for ads. LOGSEEN PREMIUM Go deeper with a subscription (monthly or yearly) or a one-time lifetime purchase: • Auto-import your weight from Apple Health • Progress photos — front, side and back poses, filters, and a then-vs-now compare slider Free to start. Upgrade only if it helps. Terms of Use (EULA): https://logseen.com/terms Privacy Policy: https://logseen.com/privacy
Screenshots
Verdict
The clearest difference is price: Logseen at Free against LeafSpy Pro's $19.99. Logseen also leads on update cadence (daily vs every 2 months) and iOS requirement (14.0 vs 16.0). LeafSpy Pro's advantage is chart position (#12 vs unranked). On ads, in-app purchases and device support 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
Logseen is free to download; LeafSpy Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
LeafSpy Pro ships an update every 2 months, Logseen daily. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.
| Parameter | LeafSpy Pro | Logseen |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 3.5 (114 ratings) — better | — |
| Positive reviews | 45.7% of reviews | — |
| Number of ratings | 114 — better | — |
| Update frequency | Every 2 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #12 — better | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | James Pollock | Heluva Global Media LLC |
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
Logseen
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LeafSpy Pro
No in-app purchases
Logseen
No in-app purchases









