TayScan vs TorqueXpert
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
TayScan
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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 managementβall 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.
TorqueXpert
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TorqueXpert SD is an automotive diagnostics, OBD data logging, and vehicle performance measurement application designed for car enthusiasts, technicians, and tuning professionals. Connect your iPhone to your vehicle using a compatible Bluetooth LE OBD-II adapter to access live vehicle data, perform diagnostics, record logs, measure power, and evaluate vehicle performance. KEY FEATURES OBD-II DATA LOGGING Record vehicle parameters in real time and save the data as CSV files for further analysis. POWER & TORQUE MEASUREMENT Calculate estimated engine power and torque using vehicle speed, engine RPM, acceleration, and other measurement parameters. PERFORMANCE MEASUREMENT Measure vehicle acceleration, including 0β100 km/h and other acceleration intervals. The combined use of OBD and GPS data provides improved measurement accuracy and stability. During a measurement, the application can analyze vehicle speed, engine RPM, acceleration, G-force, altitude, air temperature, and Density Altitude (DA). After each run, detailed graphs of speed, RPM, and acceleration are available for further analysis. VEHICLE DIAGNOSTICS Read and analyze diagnostic trouble codes (DTC), including stored, pending, and permanent faults where supported by the vehicle. ECU INFORMATION Access available ECU identification data, including VIN, calibration information, and other supported diagnostic parameters. DATA STORAGE & EXPORT CSV logs, measurement results, and diagnostic reports are stored locally and can be exported or shared for further analysis. ROAD SLOPE COMPENSATION GPS and vehicle data are used to determine road slope during power measurements. SUPPORTED OBD-II ADAPTERS TorqueXpert SD works with compatible Bluetooth LE OBD-II adapters based on ELM327 and compatible chipsets. For reliable operation, we recommend quality adapters such as: β’ Vgate vLinker MS β’ Vgate vLinker MC+ β’ Vgate iCar Pro β’ OBDLink MX+ Compatibility and available parameters depend on the specific vehicle, ECU, and OBD-II adapter. Cheap, unbranded ELM327 clones may have unstable connections, low communication speeds, or limited protocol support. A quality adapter is recommended for data logging and performance measurements. IMPORTANT INFORMATION Power and torque results are calculated estimates and depend on vehicle data, measurement conditions, and parameters provided by the user. Results are intended for informational, diagnostic, and comparative purposes and are not certified dynamometer measurements. Performance measurement results also depend on measurement conditions, GPS signal quality, available OBD data, and the equipment used. Always use the application safely. Do not interact with the application while driving. Use a passenger to operate the application when necessary, or perform required actions only when the vehicle is stationary. TorqueXpert SD is designed for automotive diagnostics, data analysis, power measurement, and vehicle performance evaluation.
Screenshots
Verdict
The clearest difference is in-app purchases: TayScan at none against TorqueXpert's 4. TorqueXpert's advantage is update cadence (every 3 days 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
Both are free to download. TorqueXpert sells 4 one-off in-app purchases. TayScan asks for nothing beyond the download.
TayScan ships an update monthly, TorqueXpert every 3 days. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.
| Parameter | TayScan | TorqueXpert |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 days β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.5 | 18.0 β better |
| Further details β not scored | ||
| Size | 9 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Niels Hollatz | Maksim Kraev |
In-app purchases
TayScan
No in-app purchases
TorqueXpert
- 1 Token$2.99
- 3 Tokens$7.99
- 5 Tokens$11.99
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- 10 Tokens$19.99








