Comparison

Teri vs Testars Tool

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

Head to head
About

Teri

Control your Tesla directly from your Apple Watch, create custom light shows synchronized to music, and monitor your vehicle's battery status, range, and charging. It also helps you locate your car and check if windows were left open.

Highlights
  • Apple Watch Tesla control
  • Customizable light show creator
  • Battery status and range monitoring
  • Car locator
  • Window status check
Features
Read full description

Introducing the ultimate app – Teri! With this app, you can easily control your Tesla through your Watch, create your own light show for your vehicle and view your battery status. Features: Watch app for Tesla: Control your Tesla with your Apple Watch! No other keys needed. Light show creator: Import your favorite song and produce a light show for your car! Check your car's battery level, range, and charging status Find your car in a crowded parking lot Check if you left the windows open Download now and start enjoying a smarter and more convenient driving experience. Disclaimer: A Annual subscription purchase will be applied to your iCloud account at the end of the trial. Subscriptions will automatically renew unless canceled within 24-hours before the end of the current period. You can cancel anytime with your iCloud account settings. Any unused portion of a free trial will be forfeited if you purchase a subscription.  While the App is designed to be consistently available, please note that the App Store maintains authority over all apps on its platform, including ours. As a result, the availability of the lifetime plan cannot be guaranteed indefinitely. In the rare event that the App becomes unavailable due to App Store actions, we regret that refunds cannot be provided for lifetime plans under such circumstances. Please note that the term "lifetime plans" refers to one of the plans you purchased within our app, which offers monthly, annual, and lifetime options For more information, see our ToS: https://www.iubenda.com/terms-and-conditions/78778459 and Privacy Policy: https://www.teriapp.com/privacy-polocy

About

Testars Tool

Enhance your Tesla experience by adding customizable physical buttons to control original vehicle functions. Enjoy a 3D dashboard with real-time CAN data and access a vast library of quick commands. Supports multiple vehicle models and offers OTA hardware upgrades.

Highlights
  • Add physical buttons for Tesla functions
  • Customizable original vehicle controls
  • Model S/X style 3D dashboard
  • Real-time CAN data, no delay
  • Support for multiple vehicle models
  • Extensive quick command library
  • OTA hardware upgrades via Bluetooth
Features
Read full description

【Feature Introduction】 1.Add physical buttons to Tesla, with extensive customization of original vehicle functions. 2.Pay tribute to the Model S/X style 3D dashboard, with original CAN data and no delay. 3.Support for multiple vehicle model replacements. 4.Massive and extremely useful quick commands, richer than the original factory app. 5.Support for app OTA hardware upgrades to the commander via Bluetooth, enabling one-click updates for the latest features. 【Contact Information】 Email: 191389703@qq.com WeChat: Harry_39

Screenshots

Teri4 screens
Testars Tool4 screens

Verdict

The call

The clearest difference is review sentiment: Teri at 47% against Testars Tool's 0%. Teri also leads on rating (4.3 vs 1.0) and ratings volume (279 vs 2). Testars Tool's advantage is in-app purchases (none vs 10) and iOS requirement (12.0 vs 16.6). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Teri sells 10 in-app purchases, starting at $3.99 per 7 days. Testars Tool asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Teri holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Teri has 279 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 47% of Teri's written reviews are positive against 0% of Testars Tool's.

UpkeepUpdate frequency

Teri ships an update every 11 days, Testars Tool weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
Teri versus Testars Tool: the parameters behind the verdict, then further details
ParameterTeriTestars Tool
PriceFreeFree
Rating4.3 (279 ratings) — better1.0 (2 ratings)
Positive reviews46.5% of reviews — better0.0% of reviews
Number of ratings279 — better2
Update frequencyEvery 11 daysWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS16.612.0 — better
Further details — not scored
Size127 MB115 MB
Age rating17+17+
DeveloperKuang LinShenzhen Niubaite Information Technology Company Limited

Customer experience

Teri

All ratings279 ratings
Positive81.4%
Neutral6.5%
Negative12.2%
Written reviews86 reviews
Positive46.5%
Neutral9.3%
Negative44.2%

Testars Tool

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Teri

Reported bugs

22 issues
  • App not functioning
  • Lost connection after purchase
  • Blank page on initial setup
  • App keeps crashing
  • Numerous bugs, glitches
Show 17 more
  • Siri commands not working well
  • Phone and watch not connecting
  • App redirects to download another app
  • App messes up Tesla account
  • No unsubscribe option
  • App is buggy and slow
  • Phone and watch does not connect
  • App crashes when contacting developer
  • Constantly getting an error
  • Watch app does not act like a key
  • Getting error messages from the app
  • Apple watch doesn't connect
  • Stopped working after a month
  • No working after purchase
  • Apple Watch app not functioning
  • Frunk unlock option removed
  • Doesn't work unless phone in hand and connected to internet

Requested features

9 requests
  • Add widget for iOS
  • Complication for battery range on Apple Watch
  • Automated or photo/video instructions on pairing Apple Watch
  • Easier to use Apple Watch app without manual start
  • Add sunroof control for Model S
Show 4 more
  • Allow app to close windows
  • Add phone call functionality
  • Tutorial for Siri controls on Apple Watch & iPhone
  • Add option to upgrade subscription to lifetime

Testars Tool

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Teri

Subscriptions6
  • Weekly subscription3 Days trial$3.997 Days
  • Monthly Plan7 Days trial$5.991 Month
  • Weekly Subscription3 Days trial$5.997 Days
Show 3 more
  • Campaign R7 Days trial$19.991 Year
  • Annual Plan7 Days trial$32.991 Year
  • Annual subscription Plan14 Days trial$34.991 Year
One-time4
  • Lifetime FFree
  • Lifetime$19.99
  • Lifetime$42.99
Show 1 more
  • Lifetime$59.99
None

Testars Tool

No in-app purchases

Questions

Is Teri free?
Teri is free to download, with in-app purchases available.
Is Testars Tool free?
Testars Tool is free to download, with no in-app purchases.
Which has better reviews, Teri or Testars Tool?
Teri is rated higher. Teri averages 4.3 out of 5 from 279 ratings, while Testars Tool averages 1.0 from 2 ratings.
Do Teri or Testars Tool have ads?
Neither Teri nor Testars Tool shows ads.
Which is updated more often, Teri or Testars Tool?
Teri ships an update every 11 days, and Testars Tool weekly. Most recently, Teri was updated on November 3, 2026 and Testars Tool on October 30, 2026.

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