# T4U for Tesla — battery edition > Real-time Tesla vehicle tracking, statistics, and charging point locator. (iPhone/iPad app by VIA - Vehicle Information application.) - Source: https://appshunter.io/ios/app/t4u-for-tesla/id1352733142 (this page in markdown: same URL + `.md`) - Developer: [VIA - Vehicle Information application](https://appshunter.io/developer/1618412871) - Category: Utilities, Navigation - Price: Free with in-app purchases (on sale, was $8.99) - Age rating: 4+ - Requires: iOS 17.7 · 3 MB - Languages: American English - Released: 2018-08-16 - Data updated: 2026-09-02 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/t4u-for-tesla/id1352733142/reviews.md ## What is T4U for Tesla? Finally know the real condition of your Tesla's battery. Not the charge percentage. Not a figure inferred from displayed range. State of Health — how much capacity your pack has left compared to the day it left the factory. T4U is built by MyBatteryHealth, Europe's reference network for electric vehicle battery diagnostics. Over 70,000 batteries certified. MEASURED, NOT ESTIMATED Your car continuously reports the energy actually left in its pack. T4U reads that figure and derives your battery health from it. The vehicle's own computer does the measuring; we only translate. This works with the car parked and locked. You get a fresh reading every day without anything ever disturbing your vehicle. WHAT YOU GET - State of Health as a percentage, with an MBH grade from A to E - Current pack capacity in kWh, against its original capacity - Real-world range, calculated from your own data - Twelve-month degradation curve - Manufacturer warranty tracking: years, mileage, minimum State of Health - Battery chemistry, cell supplier, recommended charge limits - Maximum charging power and Supercharger compatibility - Live charge level, range and lock status - Home screen widget, current even while the car sleeps ADVANCED PACK DIAGNOSTICS Where a consumer app stops at a percentage, T4U goes down to cell level: - Voltage spread between the highest and lowest brick groups — the indicator that degrades before you lose any range - Thermal spread between modules, and the position of the hottest sensor - Internal pack resistance, measured while driving - Open-circuit voltage, and voltage per cell - Real cycle count, derived from lifetime energy consumed Each of these identifies a weak point by its number inside the pack. That is what lets you document a fault with a professional. YOUR BATTERY CARD Generate your score and share it. A social-ready card carrying your grade, your battery health, your mileage and the MyBatteryHealth certification. THE OFFICIAL MBH REPORT Issue a digitally signed battery health certificate, verifiable by QR code. A document recognised by automotive professionals, leasing companies and used car buyers — and the strongest argument you have when defending your Tesla's price at resale. WHAT T4U DOES NOT DO T4U has no permission to command your vehicle, and never asks for one. It will not wake it, unlock it or move it. No location data is collected. Distance is reconstructed from the odometer. Every figure on screen states where it came from and when it was measured. A number you cannot explain is worth nothing. T4U PREMIUM The subscription unlocks full cell-level diagnostics, weak point localisation inside the pack, twelve months of history, driving performance and unlimited sharing of your battery card. €1.99 per month or €14.99 per year. Terms of use: https://tesla-4u.com/en/privacy-legal/ Privacy policy: https://tesla-4u.com/en/rgpd/ T4U is an independent app published by VIA SAS. It is not affiliated with, endorsed by or sponsored by Tesla, Inc. Tesla, Model S, Model 3, Model X and Model Y are trademarks of Tesla, Inc. ## Key features - Real-time consumption and range indicators - Vehicle statistics by trip or period - Schedule controls panel - Global charging point map - Eco-driver challenges - In-car browser access ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | abonnement mensuel | $3.99 | per month | | abonnement annuel | $39.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Rapport MBH T4U | $22.99 | one-time | ## Recent user reviews (10 of 80) All indexed reviews: https://appshunter.io/ios/app/t4u-for-tesla/id1352733142/reviews.md ### 2/5 — Pas pour toutes les Tesla *2026-08-31* J’ai une Y Marge 2024 (Berlin) elle n’est pas reconnue, il n’y a que les Juniper. Les Model 3 Propulsion fin 2024 ont une batterie CATL 64,8 kw/h brut absente de la liste aussi. Le logiciel du coup donne des chiffres fantaisistes. Sans mise à jour je désinstallerai **Developer response:** Bonjour , merci pour votre retour. Nous allons envoyer une mise à jour pour ce model Y dans la semaine. Pour les model 3 c est fait depuis aujourd’hui. ### 1/5 — Ko *2024-10-05, version 5.8* Ne fonctionne plus depuis des mois… à éviter ! 🤬 ### 1/5 — Just doesn't work.. *2024-04-30* Literally you cannot get information at all Once you login it will log you out once a day and and tell you the token is invalid there's nowhere to really refresh the token which I'm not sure why any application you refresh a token every single day. (they're actually actually is no place to do that) All I can tell is don't waste your money.. this is a horrific execution of an application.. ### 3/5 — Y *2023-02-22, version 5.7* Bonjour Quelle incidence sur la batterie de ma Tesla en consommation ? Merci ### 1/5 — Ne fonctionne plus *2023-02-07, version 5.6* La dernière mise à jour a bloqué l application. Finalement a bien fonctionné juste 1 journée lol ### 1/5 — Impossible de créer un compte! *2022-12-06, version 5.5* Problème de Token, mon compte existe soit disant déjà alors que je n’en ai pas! Encore une application d’amateurs! Passez votre chemin. ### 2/5 — Pourrait être bien *2022-06-11, version 5.1* L’application est jolie, plutôt fonctionnelle, mais énormément de bug et des synchro totalement aléatoire qui rendent cette application inutile. ### 2/5 — Peu utile (surtout pour une app payante) *2022-04-07, version 4.8* Bon maintenant la connection marche, mais le reste n’est pas top/utile. Déçu — — Precedent commentaire : Ca a mal commencé avec un Loader bloqué sur “Choisissez votre voiture” et rien ne s’affichant. Donc impossible de choisir son véhicule donc impossible de se servir de l’App. Après plus d’un d’attente, ça a marché. Ensuite ça a fonctionné pendant 36 avec les stats et la possibilité de passer des commandes à la Tesla. A noter un vrai décalage pour les commandes, j’imagine que Tesla n’autorise pas le vrai temps réel. A noter aussi que les stats ne sont pas rétroactives. Enfin depuis 2j, plus rien. Les serveurs semblent ne plus répondre. Donc 9,99€ perdu bêtement… ### 5/5 — Support client au top *2022-03-28* Le service client a répondu extrêmement vite et a été hyper efficace dans la communication et la résolution du problème **Developer response:** Merci à vous 🙏 ### 3/5 — Inscription et démarrage buggé *2022-02-03* Il faut s’accrocher pour la procédure de création de compte et connexion à tesla, forcer l’appli à quitter parfois mais au bout d’un moment ça marche. Donc que 3 étoiles pour une expérience utilisateur médiocre lors de la phase la plus importante. **Developer response:** Bonjour, nous avons pris en compte vos remarques et amené un correctif sur la récupération des véhicules. Merci pour votre confiance, nous allons encore apporter des améliorations sur le fonctionnement dans les jours qui viennent ## Frequently asked questions about T4U for Tesla ### What does T4U for Tesla do? This application allows Tesla owners to track and follow their vehicle in real-time. It provides detailed statistics on consumption, battery range, efficiency, and charging history. Users can also access a global map of charging points and participate in eco-driving challenges. ### What are the key features of T4U for Tesla? Key features include real-time indicators for consumption and battery range, statistics broken down by trips or calendar periods, a schedule controls panel, a worldwide charging point map, and eco-driving challenges. It also offers special access via the Tesla's Browser. ### Is T4U for Tesla free to use? Yes, the application is free to use and does not require a monthly account. There are no in-app purchases or advertisements mentioned. ### What Tesla models are supported? The application is available for all Tesla S3XY models. This includes the Model S, Model 3, Model X, and Model Y. ### How does the app handle my Tesla login details and data privacy? The app prioritizes data security and privacy. Your Tesla login details are transmitted directly to Tesla servers and are not stored by T4U for Tesla. Vehicle data is collected from Tesla servers, not directly from your vehicle. ## Version history (last 5 releases) ### 8.9.1 — 2026-09-01 YOUR BATTERY HEALTH FOR REAL Your Tesla now continuously reports the energy actually left in its pack. T4U reads that figure straight from the vehicle's computer, even while parked. No more deriving health from displayed range. The direct consequence: one single figure everywhere — home, diagnostics, shareable card and widget. It stays on screen even with no connection. PACK DIAGNOSTICS, CELL BY CELL Voltage spread between brick groups, thermal spread between modules, internal resistance, open-circuit voltage, real cycle count. Every weak point is identified by its number inside the pack. A WIDGET THAT NO LONGER GOES STALE The widget updates while the car sleeps and while the app stays closed for days. Charge, range and health, current on your home screen. REDESIGNED HOME SCREEN Every pack reading now sits in one place. High voltage safety no longer takes up room while everything is fine — and becomes impossible to miss if anything is wrong. DRIVING EFFICIENCY Now based on your own car's range estimate compared with its rated range. One value per day, steadier and fairer. ALSO IMPROVED - Far more reliable connection to your Tesla account: no more unexplained sign-outs - Hardened access to your diagnostic data - Every reading now states how it was obtained, and when - Displayed range corrected, now matching your car's own screen - Numerous display fixes Thank you for the feedback — keep it coming, it genuinely shapes what we work on. ### 8.9 — 2026-09-01 YOUR BATTERY HEALTH FOR REAL Your Tesla now continuously reports the energy actually left in its pack. T4U reads that figure straight from the vehicle's computer, even while parked. No more deriving health from displayed range. The direct consequence: one single figure everywhere — home, diagnostics, shareable card and widget. It stays on screen even with no connection. PACK DIAGNOSTICS, CELL BY CELL Voltage spread between brick groups, thermal spread between modules, internal resistance, open-circuit voltage, real cycle count. Every weak point is identified by its number inside the pack. A WIDGET THAT NO LONGER GOES STALE The widget updates while the car sleeps and while the app stays closed for days. Charge, range and health, current on your home screen. REDESIGNED HOME SCREEN Every pack reading now sits in one place. High voltage safety no longer takes up room while everything is fine — and becomes impossible to miss if anything is wrong. DRIVING EFFICIENCY Now based on your own car's range estimate compared with its rated range. One value per day, steadier and fairer. ALSO IMPROVED - Far more reliable connection to your Tesla account: no more unexplained sign-outs - Hardened access to your diagnostic data - Every reading now states how it was obtained, and when - Displayed range corrected, now matching your car's own screen - Numerous display fixes Thank you for the feedback — keep it coming, it genuinely shapes what we work on. ### 8.8 — 2026-08-19 YOUR BATTERY HEALTH FOR REAL Your Tesla now continuously reports the energy actually left in its pack. T4U reads that figure straight from the vehicle's computer, even while parked. No more deriving health from displayed range. The direct consequence: one single figure everywhere — home, diagnostics, shareable card and widget. It stays on screen even with no connection. PACK DIAGNOSTICS, CELL BY CELL Voltage spread between brick groups, thermal spread between modules, internal resistance, open-circuit voltage, real cycle count. Every weak point is identified by its number inside the pack. A WIDGET THAT NO LONGER GOES STALE The widget updates while the car sleeps and while the app stays closed for days. Charge, range and health, current on your home screen. REDESIGNED HOME SCREEN Every pack reading now sits in one place. High voltage safety no longer takes up room while everything is fine — and becomes impossible to miss if anything is wrong. DRIVING EFFICIENCY Now based on your own car's range estimate compared with its rated range. One value per day, steadier and fairer. ALSO IMPROVED - Far more reliable connection to your Tesla account: no more unexplained sign-outs - Hardened access to your diagnostic data - Every reading now states how it was obtained, and when - Displayed range corrected, now matching your car's own screen - Numerous display fixes Thank you for the feedback — keep it coming, it genuinely shapes what we work on. ### 8.7 — 2026-08-17 LA SANTÉ DE VOTRE BATTERIE EST MAINTENANT MESURÉE, PLUS ESTIMÉE Votre Tesla transmet en continu l'énergie réellement disponible dans son pack. T4U lit cette donnée directement dans le calculateur du véhicule, y compris à l'arrêt. Fini le calcul déduit de l'autonomie affichée. DIAGNOSTIC DU PACK, CELLULE PAR CELLULE Écart de tension entre groupes de cellules, écart thermique entre modules, résistance interne, tension à vide, cycles réels. Chaque point faible est identifié par son numéro dans le pack. UN WIDGET QUI NE DÉCROCHE PLUS Le widget se met à jour même quand la voiture dort et quand l'application reste fermée plusieurs jours. Charge, autonomie et santé, à jour sur votre écran d'accueil. ACCUEIL REPENSÉ Toutes les mesures du pack sont désormais regroupées au même endroit. La sécurité haute tension ne prend plus de place tant que tout va bien — et devient impossible à manquer si quelque chose cloche. EFFICIENCE DE CONDUITE Le calcul repose maintenant sur l'estimation d'autonomie de votre propre voiture, comparée à son autonomie nominale. Une valeur par jour, plus stable et plus juste. AUTRES AMÉLIORATIONS - Connexion à votre compte Tesla nettement plus fiable : fini les déconnexions inexpliquées - Sécurité renforcée sur l'accès à vos données de diagnostic - Chaque mesure indique désormais comment elle a été obtenue et quand - Correction de l'autonomie affichée, désormais alignée sur l'écran de votre voiture - Nombreuses corrections d'affichage Merci pour vos retours — continuez à nous écrire, ils orientent réellement ce sur quoi nous travaillons. ### 8.6 — 2026-08-15 YOUR BATTERY HEALTH IS NOW MEASURED, NOT ESTIMATED Your Tesla now continuously reports the energy actually left in its pack. T4U reads that figure straight from the vehicle's computer, even while parked. No more deriving health from displayed range. The direct consequence: one single figure everywhere — home, diagnostics, shareable card and widget. It stays on screen even with no connection. PACK DIAGNOSTICS, CELL BY CELL Voltage spread between brick groups, thermal spread between modules, internal resistance, open-circuit voltage, real cycle count. Every weak point is identified by its number inside the pack. A WIDGET THAT NO LONGER GOES STALE The widget updates while the car sleeps and while the app stays closed for days. Charge, range and health, current on your home screen. REDESIGNED HOME SCREEN Every pack reading now sits in one place. High voltage safety no longer takes up room while everything is fine — and becomes impossible to miss if anything is wrong. DRIVING EFFICIENCY Now based on your own car's range estimate compared with its rated range. One value per day, steadier and fairer. ALSO IMPROVED - Far more reliable connection to your Tesla account: no more unexplained sign-outs - Hardened access to your diagnostic data - Every reading now states how it was obtained, and when - Displayed range corrected, now matching your car's own screen - Numerous display fixes Thank you for the feedback — keep it coming, it genuinely shapes what we work on. ## Apps similar to T4U for Tesla | App | Rating | Price | Category | | --- | --- | --- | --- | | [WhatsKeepr2](https://appshunter.io/ios/app/whatskeepr2/id6747646112) | — | $8.99 | Utilities | | [Digital Building Twin](https://appshunter.io/ios/app/digital-building-twin/id6739471165) | 2.0 (1) | $12.90 | Utilities | | [Image to Text \| OCR Scanner](https://appshunter.io/ios/app/image-to-text-ocr-scanner/id6749104544) | — | Free | Utilities | | [HEIC to JPG - Pics2PDF](https://appshunter.io/ios/app/heic-to-jpg-pics2pdf/id6748744676) | 5.0 (4) | Free | Utilities | | [InstantFocus](https://appshunter.io/ios/app/instantfocus/id6745973465) | — | $0.99 | Utilities | | [Call Shield: Spam Call Blocker](https://appshunter.io/ios/app/call-shield-spam-call-blocker/id6744029271) | 1.0 (1) | $1.99 | Utilities | ## More apps by VIA - Vehicle Information application - [My Battery Health](https://appshunter.io/ios/app/my-battery-health/id1521225068) - [Access Token](https://appshunter.io/ios/app/access-token/id1541682236) - [GRscore](https://appshunter.io/ios/app/grscore/id6760705881) - [SwitchEV](https://appshunter.io/ios/app/switchev/id6761502123) All apps by VIA - Vehicle Information application: https://appshunter.io/developer/1618412871 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*