Comparison

TayScan vs Check Engine Codes by Motorvet

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

Head to head
About

TayScan

Features
Read full description

Unlock Advanced Telemetry & Diagnostics for Your Porsche Taycan EV TayScan gives Taycan owners, enthusiasts, and independent specialists deep insights into their high-voltage battery system, real-time vehicle telemetry, and fault managementβ€”all directly via a Bluetooth OBD-II adapter. Key Features: β€’ Battery Health & SoH Reports Generate official-style PDF Diagnostic Certificates detailing true State of Health (SoH), Max Usable Capacity (kWh), cell balance, and charging performance limits. Ideal for long-term health tracking or pre-purchase inspections (PPI). β€’ Real-Time Telemetry & Fast-Charge Monitoring Track high-voltage pack voltage, cell span limits, average pack temperature, and real-time pre-conditioning status to ensure peak 270 kW DC fast-charging performance. β€’ Cell Voltage & Imbalance Matrix Visualize individual cell voltages and track pack drift down to the millivolt (mV) level to verify anode-cathode balancing and pack integrity. β€’ OBD-II Fault Code Scanner Quickly scan for Diagnostic Trouble Codes (DTCs) across battery management systems and vehicle gateways, inspect error details, and clear fault codes instantly. β€’ 100% Private & Direct All vehicle queries run locally on your device via low-latency UDS commands. No account registration, subscriptions, or cloud servers required. β€’ Built-in Vehicle Simulator Explore all telemetry screens and preview diagnostic metrics in Demo Mode without needing a physical vehicle connected. Supported Bluetooth (BLE) Adapters: - Vgate: iCar Pro BLE, vLinker MC+, vLinker BM+ - OBDLink: OBDLink CX, OBDLink MX+ (BLE mode) - Veepeak: OBDCheck BLE, OBDCheck BLE+ - Carista: OBD2 BLE Adapter - LELink: LELink / LELink2 - Generic BLE: Any standard ELM327 BLE 4.0+ adapter Support & Feedback: Have questions or want to request support for your specific adapter? Reach out to us directly at feedback@tayscan.nl. Disclaimer: TayScan is an independent diagnostic application. Porsche and Taycan are registered trademarks of Dr. Ing. h.c. F. Porsche AG. TayScan is not affiliated with or endorsed by Porsche AG.

About

Check Engine Codes by Motorvet

Features
Read full description

Check-engine light on and a code such as P0420 from a workshop or a friend's reader? Type it in: Motorvet shows its standard title, its meaning in plain words and its system. Many common codes are explained; manufacturer-specific codes are marked as such, their meaning is not guessed. Free, no adapter needed. What else works without an adapter? The maintenance log: add your car by hand and note oil changes, brakes, tyres, inspections and more, with date, mileage and a note. Reminders by date or mileage, whichever comes first, can notify you on the day; for a mileage, Motorvet estimates the day from your entries. And the Buyer's Checklist for a used car: 34 points from paint to papers and the test drive, each OK, Note or Issue, with a note or photo, shared as a free PDF summary. What does the scanner read? With a Bluetooth LE OBD2 adapter in the OBD port, a Quick Scan reads trouble codes (stored, pending, permanent), the check-engine light, emissions readiness, freeze frame and the VIN when the car reports them, plus live values. Each scan ends with one of four summaries, based only on what the OBD port reports at that moment; every flagged item says why. Reading and explaining trouble codes is free. Does it help when I buy a used car? Walk around the car with the Buyer's Checklist. Then, with an adapter and the seller's permission, run the Used Car Check: enter the dashboard mileage and see what deserves a closer look, such as a recent reset of the diagnostic memory. Signals, never proof. The review on screen is free; the PDF report, with your checklist in it, needs Pro or a one-time Used Car Report. What does it not do? Standard engine and emissions data only: no ABS, airbag or transmission details, no coding, no service resets. Clearing codes, the only write function, needs your confirmation, the engine off and the car standing still, and is never offered in a Used Car Check. Do not use the app while driving. What do I need for a scan? A Bluetooth LE OBD2 adapter (ELM327/STN-compatible), sold separately; connect it in the app, not in iOS Settings. Adapters with Classic Bluetooth (paired with PIN 1234), Wi-Fi and USB adapters are not supported. A car with OBD-II/EOBD: in the EU generally petrol cars from about 2001 and diesels from about 2004, in the US from 1996. Some cars report fewer values, electric cars little or none; US cars that use only SAE J1979-2 are not supported yet. Compatible adapters: https://motorvet.taleppo.com/adapters What stays on my iPhone? Everything about your car: VIN, codes, scans, the maintenance log, checklists, photos and notes. No account, no advertising. Usage statistics are off unless you switch them on in Settings > Privacy. What is free, and what is Pro? Free: the code lookup, the maintenance log, the Buyer's Checklist, Quick Scan with code explanations, readiness, freeze frame, Simple live data, one vehicle, the Used Car Check on screen and clearing codes. Pro (subscription, 1 month or 12 months): unlimited vehicles, full history with comparisons, trends, advanced live data and unlimited PDF reports, including Used Car Reports. The Used Car Report (one-time purchase) unlocks the PDF of one Used Car Check on this iPhone; it is not restored on another iPhone or after reinstalling. Export the PDF to keep it. Payment is charged to your Apple Account at confirmation of purchase. Pro renews automatically unless cancelled at least 24 hours before the end of the current period; renewal is charged within the last 24 hours of the period. Manage or cancel it in your Apple Account settings; deleting the app does not cancel the subscription. Terms of Use: https://motorvet.taleppo.com/terms Privacy Policy: https://motorvet.taleppo.com/privacy Motorvet is an informational tool. It is not a mechanical inspection, an official roadworthiness test or an expert appraisal, and it does not tell you whether to buy a car. Have a qualified technician inspect a car before you buy it.

Screenshots

TayScan3 screens
Check Engine Codes by Motorvet4 screens

Verdict

The call

The clearest difference is in-app purchases: TayScan at none against Check Engine Codes by Motorvet's 3. Check Engine Codes by Motorvet's advantage is update cadence (every 2 weeks vs monthly) and iOS requirement (18.0 vs 26.5). On price, ads and device support 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. Check Engine Codes by Motorvet sells 3 in-app purchases, starting at $4.99 per month. TayScan asks for nothing beyond the download.

UpkeepUpdate frequency

TayScan ships an update monthly, Check Engine Codes by Motorvet every 2 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

Scorecard3 real differences Β· 3 level
TayScan versus Check Engine Codes by Motorvet: the parameters behind the verdict, then further details
ParameterTayScanCheck Engine Codes by Motorvet
PriceFreeFree
Update frequencyMonthlyEvery 2 weeks β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS26.518.0 β€” better
Further details β€” not scored
Size9 MB12 MB
Age rating4+4+
DeveloperNiels HollatzTaleppo

In-app purchases

None

TayScan

No in-app purchases

3 purchases

Check Engine Codes by Motorvet

Subscriptions2
  • Motorvet Pro (1 month)$4.991 Month
  • Motorvet Pro (12 months)$34.991 Year
One-time1
  • Motorvet Used Car Report$3.99

Questions

Is TayScan free?
TayScan is free to download, with no in-app purchases.
Is Check Engine Codes by Motorvet free?
Check Engine Codes by Motorvet is free to download, with in-app purchases available.
Do TayScan or Check Engine Codes by Motorvet have ads?
Neither TayScan nor Check Engine Codes by Motorvet shows ads.
Which is updated more often, TayScan or Check Engine Codes by Motorvet?
TayScan ships an update monthly, and Check Engine Codes by Motorvet every 2 weeks. Most recently, TayScan was updated on October 31, 2026 and Check Engine Codes by Motorvet on November 6, 2026.

Other comparisons