Last updated: 5 September 2026
LeafLink is an independent Android app that shows you information about your own Nissan vehicle. It is not affiliated with, endorsed by, or produced by Nissan.
To show your vehicle's data, LeafLink signs in to your Nissan connected services account on your behalf. Your email address and password are sent directly from your phone to Nissan's authentication server over an encrypted HTTPS connection, and are used only to obtain access tokens.
Your password is never stored. It is held in memory only for the moment it takes to sign in, and is discarded immediately afterwards.
| Stored | Why | How |
|---|---|---|
| Nissan access and refresh tokens | So you do not have to sign in every time | Encrypted (AES256-GCM) with a key held in the Android Keystore |
| Battery readings: date, charge percentage, charging flag | To estimate battery state of health over time | Encrypted, same store |
| Your electricity tariff and miles/km preference | To work out running costs and show your preferred units | Encrypted, same store |
| Anything you type into the Car file screen: the date the car was first registered, MOT, tax, insurance and service dates, and lease or PCP details such as the mileage allowance and excess rate | To count down your battery warranty, remind you before a renewal, and warn you if you are heading past a mileage allowance | Encrypted, same store |
| The date your 12V battery was replaced, whether you want a monthly tyre pressure prompt, and the petrol car you compare running costs against | To show the ownership and cost figures you asked for | Encrypted, same store |
All of it stays on your device. It is excluded from Android cloud backup and from device-to-device transfer, and it is deleted when you sign out or uninstall the app.
When you open the app it reads your vehicle's state of charge, range, odometer, climate status, door and lock status, warning lamps, trip history and — where your subscription includes it — vehicle location. This information is displayed and held in memory while the app is open. It is not written to disk and not transmitted anywhere else.
| Permission | Why |
|---|---|
INTERNET | To reach Nissan's service |
ACCESS_NETWORK_STATE | To tell whether you are online |
POST_NOTIFICATIONS |
Only if you switch on the charging-complete alert. Asked for at that moment, and declining simply leaves the alert off. |
WAKE_LOCK, RECEIVE_BOOT_COMPLETED,
FOREGROUND_SERVICE |
Added automatically by Android's WorkManager, which schedules that background check. They are not used for anything else, and no background work runs at all unless you enable the alert. |
LeafLink does not request location permission. Any vehicle position shown comes from Nissan's report of where the car is, not from your phone.
Off unless you turn it on. When enabled, the app asks Nissan for your car's charge state in the background - every fifteen minutes while the car is charging, and about once an hour otherwise. That request reads Nissan's cached figures and does not wake your car. The result is stored on your device exactly as described above, and is not sent anywhere else. Switching the alert off stops the checks entirely.
The widgets showing charge, range, plug status and cabin temperature display figures already stored on your device, and make no network requests of their own.
The climate presets are different: tapping Cool or Heat sends a pre-conditioning request to Nissan for your vehicle, exactly as the button inside the app does. Nothing is transmitted unless you tap one.
Optional, and off unless you switch it on. When it is on, the background check that already runs for charging also asks Nissan whether the car is locked, and raises a notification if it has been unlocked for about half an hour. It adds no new kind of data: the lock status is something the app already reads and displays whenever you open it.
LeafLink excludes itself from Android cloud backup, which means a new phone starts from nothing. Because the battery health estimate is built from months of readings, the app lets you save a copy of your own data to a file you choose, and read it back later.
Two things to be clear about. First, your Nissan sign-in is not in that file — the access and refresh tokens are deliberately left out, so the file is useless to anyone who finds it and you sign in again on the new phone. Second, the file itself is ordinary text and is not encrypted: it holds your battery readings and whatever you typed into the Car file screen, so keep it somewhere you are happy for it to live. The app only ever writes it where you tell it to, and never uploads it anywhere.
LeafLink is free and every feature is available to everyone. There is an optional tip button which does exactly one thing: it says thank you. It unlocks nothing, removes nothing and changes nothing about how the app works.
Tips are handled by Google Play, not by us. Play takes the payment, so the app never sees your name, your address or your card details, and nothing about a tip is stored on your phone or sent to us. If you never tap it, nothing happens at all.
If you switch reminders on, LeafLink checks the dates you entered on the Car file screen against today's date and raises a notification when one is a month away, and again in the final week. This check makes no network request of any kind — it cannot, because the dates come from your own phone and are compared against your phone's clock. Nothing is looked up online, and no reminder data leaves the device.
The Car file screen is entirely optional. Leave it empty and nothing is stored and no reminders are scheduled.
The CSV export writes a file into the app's own temporary storage and hands it to Android's share sheet, so it goes wherever you choose to send it. LeafLink needs no storage permission for this and keeps no copy.
Once your details reach Nissan, Nissan's own privacy policy and terms govern what happens to them. LeafLink is a client for a service you already hold an account with; it does not change your relationship with Nissan.
Signing out inside the app erases the stored tokens and clears the session. Uninstalling LeafLink removes everything it has stored, including the battery history. Neither action affects your Nissan account, which you manage with Nissan directly.
LeafLink is not directed at children and requires an existing Nissan connected services account held by a vehicle owner.
If this policy changes, the date at the top will be updated and the revised policy published at this address.
Questions about this policy: leaflink@elevating.co.uk