X100C vs OBD2 Logger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
X100C
This mobile tool facilitates key programming and PIN code reading for various car models via an OBD2 connection. It offers multilingual support and a user-friendly interface for compatible Ford, Mazda, Peugeot, Citroen, and DS vehicles.
- Key programming via OBD2
- PIN code reading
- Supports Ford, Mazda, Peugeot, Citroen, DS
- Multilingual interface
- User-friendly operation
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X100C is a dongle used to read PIN CODE and do key programming via OBD2 socket with your cell phone. It supports Ford, Mazda, Peugeot, Citroen and DS. It is user friendly and with Multilanguage. Models included(FORD/MAZDA/PEUGEOT/CITROEN/DS) For Mazda CX-3 ( 2015+ )( smart PCF7953 ID46 ) For Mazda CX-5 ( 2012+ )( smart PCF7953 ID46 ) For Mazda 2 ( 2014+ )( smart PCF7953 ID46 ) For Mazda 3 ( 2013+ )( smart PCF7953 ID46 ) For Mazda 6 ( 2013+ )( smart PCF7953 ID46 ) For Mazda 2 ( 2002 - 2013)( 4D ID63 ) For Mazda 3 ( 2002 - 2012 )( 4D ID63 ) For Mazda 5 ( 2002 - 2012 )( 4D ID63 ) For Mazda 6 ( 2014 - 2012 )( 4D ID63 ) For Focus3/CMax 2010+ - mechanical ( DST80+ ) For Focus3/CMax 2010+ - proximity ( DST80+ ) For Kuga2 2014+ - mechanical ( DST80+ ) For Kuga2 2014+ - proximity ( DST80+ ) For MondeoMK4/SMax facelift 2010+ - mechanical ( DST80+ ) For MondeoMK4/SMax facelift 2010+ - proximity ( DST80+ ) For Fiesta 2014+ - ONLY mechanical ( DST80+ ) For BMax+ - ONLY mechanical ( DST80+ ) Custom - ONLY mechanical ( DST80+ ) ( not fully supported ) NON-supported ( soon, look for news ): For Fiesta 2014+ - proximity For Bmax – proximity For Ecosport – proximity Support PINCODE to read all of the following model via OBD Peugeot 1007 Peugeot 206 Peugeot 207 Peugeot 208 Peugeot 2008 Peugeot 301 Peugeot 306 Peugeot 307 Peugeot 308 Peugeot 3008 Peugeot 406 Peugeot 407 Peugeot 4007 Peugeot 508 Peugeot 5008 Peugeot 607 Peugeot 806 Peugeot 807 Peugeot Bipper Peugeot Expert Peugeot Partner C2 C3 C3 Picasso C3 Pluriel C4 Cactus C4 Picasso C5 C8 C-Elysee xsara Picasso Berlingo 2 Berlingo 3 Jumper Jumpy DS3 DS4 DS5
OBD2 Logger
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OBD2 Logger turns your iPhone into a precision data logger for any modern car. Plug a Bluetooth ELM327 adapter into your vehicle's OBD2 port, pair it once, and stream live engine, hybrid, battery, and emissions data straight into per-session CSV files on your phone. No accounts. No cloud. No analytics. Your driving data never leaves your device. LIVE READOUT • 40+ standard SAE J1979 PIDs, automatically discovered from your car: RPM, vehicle speed, coolant temp, throttle, MAF, intake MAP, fuel trims, catalyst temperatures, and more. • Manufacturer-specific Mode 21 PIDs on profiled vehicles — including HV pack voltage, MG1/MG2 motor torque, and battery cell-block temperatures on Toyota/Lexus hybrids. • Values grouped by category (Engine, Hybrid, Battery, Emissions, Diagnostics) and updated every second. • One CSV per logging session, written into the app's Files container — open it in Numbers, Excel, pandas, DuckDB, or any other tool with no preprocessing. • Wide-table format: ISO-8601 timestamps, one column per active PID, blank cells where the ECU returned no data (no spurious forward-fill). • Smart-stop after extended idle so you don't end up with a tail of empty rows when you forget to tap Stop. WORKS IN THE BACKGROUND • Keeps logging while you drive with Maps in the foreground or the screen off, using Apple's standard background location mode for trip-tracking apps. The system location indicator is shown the entire time. We don't store your location. VEHICLE PROFILES • Ships with three profiles: a generic Mode-01 fallback, a Toyota hybrid family profile, and a 2020 Lexus RX 450h/450hL profile validated against a real vehicle. • VIN auto-read on connect; year, make, model, and trim pre-filled from NHTSA's free public vPIC API. • Import any third-party profile JSON to add coverage for your car. The format is documented and human-readable. DON'T HAVE AN ADAPTER YET? • Tap "Try demo mode" on the second onboarding step to explore the app end-to-end with synthetic data — no hardware required. WHAT YOU NEED • Any Bluetooth Low Energy ELM327 adapter (Veepeak OBDCheck BLE+, vLinker MC+, OBDLink, etc. — most BLE clones work). USB-only and Wi-Fi-only adapters are NOT supported. • A car with an OBD2 port (1996+ in the US, 2001+ in the EU). PRIVACY • Nothing is collected, transmitted, or stored on our servers — we don't have servers. The only outbound call the app ever makes is one VIN decode per vehicle to NHTSA's vPIC API. • Your CSVs and vehicle records live in the app's Files container, accessible to you in the iOS Files app under On My iPhone → OBD2 Logger. • Open source: github.com/NathanNam/obd2-logger
Screenshots
Verdict
The clearest difference is update cadence: OBD2 Logger at every 6 weeks against X100C's every 6 months. X100C's advantage is device support (3 vs 1) and iOS requirement (7.0 vs 17.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
X100C ships an update every 6 months, OBD2 Logger every 6 weeks. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.
| Parameter | X100C | OBD2 Logger |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 7.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 51 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 翔宇 金 | Daehyun Nam |
In-app purchases
X100C
No in-app purchases
OBD2 Logger
No in-app purchases









