Comparison

tes vs ELMCheck

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

Head to head
About

tes

Explore and visualize CAN bus data from various vehicles, including electric and gas-powered models. Connect to OBD-2 accessories to view live data, analyze message identifiers, and playback log files. Unlock advanced features for deeper analysis and customization with optional purchases.

Highlights
  • Live CAN bus data visualization
  • Support for OBDLink and vLinker accessories
  • Playback of CAN bus log files
  • Customizable signal visualizations
  • Advanced data analysis tools
  • DBC file import
Features
Read full description

tes•LAX is a CAN bus Explorer and visualization tool that works with CAN data from many sources, including gas-powered and electric vehicles. ** tes•LAX can connect to some OBD-2 accessories to show live CAN Bus data from your vehicle. Additional wiring, and installation is necessary. Damage done to your vehicle may not be covered by vehicle warranty. Proceed at your own risk. ** - Predefined visualizations with many useful signals for several popular electric vehicles. - Designed to analyze and visualize CANBus data with 11-bit message identifiers. - Works with the OBDLink MX+ and CX, vLinker FS/MC+ and WiFi, and other WiFi and Bluetooth Low Energy accessories. "Classic Bluetooth" accessories other than the OBDLink MX+ and vLinker FS are not supported. Please visit https://teslax.app for more information on supported accessories. - Support for accessories supporting the Panda UDP Protocol. Note: Comma.ai has discontinued WiFi support for the Panda White. You may be able to flash your Panda to an old version of firmware to maintain WiFi support. Panda is for advanced users only and not recommended for normal users. - Playback CAN Bus log files. (TXT, ASC and BLF file formats) - Data sources containing multiple buses (ASC/BLF log files, Panda) With an "Extended Release" purchase or subscription: - Configure the visualization by choosing signals from the included signals database. - Additional pages of pre-configured visualization in provided presets. For pros, and tinkerers, an "Extra Strength 2.0" purchase or subscription unlocks additional features: - New in 2.0: Additional full page visualizations such as a Drag Timer, Matrix View, and Graph. - Record log files in TXT, ASC, and BLF formats and convert to comma separated format (CSV) - Create and edit presets. - Modify the signal database to create and update signals as the vehicle manufacturer changes the data format. - Export presets to file for backup/sharing and re-import them. - Ability to import DBC files (containing signal definition information). - A "Binary Matrix" view of a message or signal for reverse engineering data streams. - Use javascript code to calculate a result value from the raw message bytes (or other defined signals within the same message) This software is not affiliated with or endorsed by Tesla Motors or any vehicle manufacturer. This app accesses data streams that are not documented or supported by the vehicle manufacturer. If the manufacturer decides to change the data stream, then this app may display incorrect information. If the manufacturer removes data, then some or all functionality of the app may cease to work. Many signals in the signal database may be from previous versions of the vehicle operating software (such as the cell voltages, which were removed in a software update many updates ago) You are responsible for all risks of installing and using 3rd party hardware in your vehicle. Do not use tes•LAX while driving. Please obey all traffic laws and do not drive while distracted. tes•LAX uses bluetooth and local network access only for the purpose of connecting to accessories. Analytics are not collected at any time. Use caution when using accessories that are not secured via password or pairing. See https://teslax.app/supported-hardware/ for more information. You accept full and unconditional responsibility for the use of this software. All About Jake, LLC is not responsible for any consequences of using this software, including any damage to your vehicle, loss, damage to property, personal injury, or violation of law that may occur in connection with using this application. Obey all laws and respect the privacy of others. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND. The author(s) and copyright holders shall not be liable for any damages, even if advised beforehand of the possibility of such damages. Full terms of use can be found here: https://www.teslax.app/terms-and-conditions/

About

ELMCheck

Verify the authenticity and functionality of your OBD-II scanner. This app runs comprehensive tests on ELM327 commands to report supported features, ensuring safe and reliable use with your vehicle.

Highlights
  • Authenticity testing for OBD-II scanners
  • Comprehensive ELM327 command test suite
  • Reports actual supported features
  • Ensures safe scanner usage
  • Basic tests are free
  • Unlock full suite with in-app purchase
Features
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Check the authenticity of your OBD-II scanner with ELMCheck. Most OBD-II scanners on the market use some variation of ELM327, but did you know that many scanners use clones of the original ELM327? It can be hard to tell, because these clones will work well enough for basic use but fail in unexpected scenarios. This is where ELMCheck comes in. ELMCheck offers a comprehensive set of test cases that cover the entire documented set of ELM327 commands. Regardless of which version your scanner says it is, ELMCheck can provide a comprehensive report of the features that are actually supported. Get the confidence you need to use your OBD-II scanner on your vehicle safely. ELMCheck is free to run basic tests. An in-app purchase will unlock the full test suite.

Screenshots

tes4 screens
ELMCheck4 screens

Verdict

The call

The clearest difference is rating: ELMCheck at 5.0 against tes's 4.3. ELMCheck also leads on review sentiment (100% vs 75%). tes's advantage is ratings volume (22 vs 1). On price, update cadence, ads and in-app purchases 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. tes sells 8 in-app purchases, starting at $9.99 per year and ELMCheck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ELMCheck holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: tes has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 75% of tes's written reviews are positive against 100% of ELMCheck's.

UpkeepUpdate frequency

tes ships an update every 3 weeks, ELMCheck every 2 weeks. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
tes versus ELMCheck: the parameters behind the verdict, then further details
ParametertesELMCheck
PriceFreeFree
Rating4.3 (22 ratings)5.0 (1 ratings) — better
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings22 — better1
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.0 — better18.0
Further details — not scored
Size86 MB14 MB
Age rating17+4+
DeveloperAll About Jake, LLCFearless design, LLC

Customer experience

tes

All ratings21 ratings
Positive81.0%
Neutral0.0%
Negative19.0%
Written reviews16 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

ELMCheck

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

tes

Subscriptions1
  • Extra Strength Subscription$9.991 Year
One-time7
  • One-Time Free 5-day PassFree
  • Extra Strength Upgrade to 2.0$4.99
  • Extra Strength Upgrade 1.0$5.99
Show 4 more
  • Extended Release 1.0$6.99
  • Upgrade to Extra Strength 2.0$10.99
  • Extra Strength 1.0$14.00
  • Extra Strength 2.0$18.99
1 purchases

ELMCheck

One-time1
  • Comprehensive testing$2.99

Questions

Is tes free?
tes is free to download, with in-app purchases available.
Is ELMCheck free?
ELMCheck is free to download, with in-app purchases available.
Which has better reviews, tes or ELMCheck?
ELMCheck is rated higher. tes averages 4.3 out of 5 from 22 ratings, while ELMCheck averages 5.0 from 1 ratings.
Do tes or ELMCheck have ads?
Neither tes nor ELMCheck shows ads.
Which is updated more often, tes or ELMCheck?
tes ships an update every 3 weeks, and ELMCheck every 2 weeks. Most recently, tes was updated on October 24, 2026 and ELMCheck on October 24, 2026.

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