Comparison

T4U for Tesla vs TeslSizzo

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

T4U for Tesla

Track and monitor your Tesla vehicle in real-time. View battery range, efficiency, and statistics by trip or period. Access a global map of charging points and participate in eco-driving challenges.

Highlights
  • 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
Features
Read full description

Finally know the real condition of your Tesla's battery. Not the charge percentage. Not a figure inferred from displayed range. State of Health β€” 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 β€” 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 β€” 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.

About

TeslSizzo

Features
Read full description

Your Tesla, just a tap away on your wrist. You leave a meeting, and your Tesla is already cool. You arrive at the parking lot, and a compass guides you straight to it. Lock the doors right from your watchβ€”no need to dig for your phone or open anything else. TeslSizzo turns your watch into your Tesla key. CONTROL EVERYTHING, INSTANTLY β€’ Lock and unlock your Tesla from anywhere β€’ Start the climate control before you get in and arrive at a ready-to-go car β€’ Trunk, frunk, horn, lights, and windows β€’ Sentry Mode, remote start, Pet Mode, and Camp Mode β€’ Battery, range, and charging status at a glance DESIGNED FOR YOUR WATCH (not just an accessory) β€’ Native app for Apple Watch and Wear OS β€’ Wear OS version responds even if the phone app is closed β€’ Your 4 favorite commands, always within reach β€’ Where did you park? The compass guides you there YOUR ACCOUNT, SECURE β€’ Log in via the official Tesla site: your password never passes through our servers β€’ Every command travels via the official Tesla Fleet API β€’ Protect the app with a PIN, fingerprint, or Face ID β€’ Revoke access anytime via your Tesla account TESSA, YOUR ASSISTANT Ask about your energy consumption, activity, or how to configure settings. She answers in your language. NO SURPRISES Check your command count and estimated costs. We’ll notify you before you hit your limit. TRY IT FREE FOR 7 DAYS Connect your vehicle and use it for a full week. Then, choose the plan that suits you best... or bring your own Tesla credentials (BYOC). IN YOUR LANGUAGE Spanish, English, German, French, Italian, Portuguese, Japanese, Korean, Russian, and Chinese. Download it and wear your Tesla on your wrist. IMPORTANT NOTICE TeslSizzo is an independent application. Not made, endorsed, sponsored by, or affiliated with Tesla, Inc. Tesla, Model S/3/X/Y, Cybertruck, Roadster, and the Tesla logo are registered trademarks of Tesla, Inc. We connect solely via the official API (Tesla Fleet API), with your authorization. Requires a compatible Tesla vehicle and a Tesla account. Terms of Use (EULA): https://tesl-sizzo.com/terms Privacy Policy: https://tesl-sizzo.com/privacy

Screenshots

T4U for Tesla4 screens
TeslSizzo4 screens

Verdict

The call

The clearest difference is ads: T4U for Tesla at none against TeslSizzo's shown. TeslSizzo's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.7). On price, update cadence and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. T4U for Tesla sells 3 in-app purchases, starting at $3.99 per month and TeslSizzo sells 8 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

T4U for Tesla ships an update every 4 days, TeslSizzo weekly. The most recent releases landed on October 17, 2026 and October 21, 2026 respectively.

Scorecard3 real differences Β· 5 level
T4U for Tesla versus TeslSizzo: the parameters behind the verdict, then further details
ParameterT4U for TeslaTeslSizzo
PriceFreeFree
Positive reviews43.5% of reviewsβ€”
Update frequencyEvery 4 days β€” betterWeekly
AdsNo β€” betterYes
In-app purchasesYesYes
MonetizationFreeβ€”
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch β€” better
Requires iOS17.715.0 β€” better
Further details β€” not scored
Size4 MB60 MB
Age rating4+4+
DeveloperVIA - Vehicle Information applicationLUSENROUE SIZZO

In-app purchases

3 purchases

T4U for Tesla

Subscriptions2
  • abonnement mensuel$3.991 Month
  • abonnement annuel$39.991 Year
One-time1
  • Rapport MBH T4U$22.99
8 purchases

TeslSizzo

Subscriptions8
  • Membership Watt Monthly7 Days trial$4.991 Month
  • Membership Watt Plus Monthly7 Days trial$7.991 Month
  • Membership Kilowatt Monthly7 Days trial$9.991 Month
Show 5 more
  • Membership Kilowatt Plus Monthly7 Days trial$12.991 Month
  • Membership Watt Yearly7 Days trial$49.991 Year
  • Membership Watt Plus Yearly7 Days trial$79.991 Year
  • Membership Kilowatt Year7 Days trial$99.991 Year
  • Membership Kilowatt Plus Yearly7 Days trial$129.991 Year

Questions

Is T4U for Tesla free?
T4U for Tesla is free to download, with in-app purchases available.
Is TeslSizzo free?
TeslSizzo is free to download, with in-app purchases available.
Do T4U for Tesla or TeslSizzo have ads?
TeslSizzo shows ads; T4U for Tesla does not.
Which is updated more often, T4U for Tesla or TeslSizzo?
T4U for Tesla ships an update every 4 days, and TeslSizzo weekly. Most recently, T4U for Tesla was updated on October 17, 2026 and TeslSizzo on October 21, 2026.

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