Xm Diagrams vs CrankData
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Xm Diagrams
Access detailed automotive information for the Citroën Xm, including schematic diagrams, wiring layouts, and technical data. Features include an ORGA calculator, error code readouts, and a fuse voltage drop calculator.
- Schematic diagrams and wiring layouts
- Wiring harnesses information
- Engine, fluids, and filter data
- ORGA calculator
- Error code readouts with explanations
- Fuse voltage drop calculator
- Printable circuit diagrams
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Automotive information about the Citroën Xm: - schematic diagrams and wiring layouts - wiring harnesses - engine, fluids, lubricants, filters, electrical and other data - ORGA calculator - error code readouts with explanation - car exterior colours - fuse voltage drop calculator - search parts by name or manufacturer position number - support for printing the circuit diagrams
CrankData
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CrankData turns a Bluetooth OBD-II adapter into clear answers about your car — live vitals, plain-English fault codes, and tools that help you fix issues and pass emissions. CONNECT & GO LIVE Pair a compatible ELM327-style Bluetooth scanner (including DA100-class adapters). CrankData streams RPM, speed, coolant, battery voltage, load, fuel trims, and more while you drive. CODES IN PLAIN ENGLISH Read stored, pending, and permanent codes with titles you can actually understand — not just a P-code. See common causes, capture freeze-frame conditions, and Quick Reset (Mode 04) when you’re ready to clear and retest. READINESS & EMISSIONS See which monitors are ready, how far you’ve driven since a clear, and coaching tips for drive-cycle monitors like EVAP — so you’re not guessing before an inspection. DRIVE & GAUGES Use the Drive tab for trip logging, or flip to a full landscape gauge cluster with tach, speedo, and check-engine status. Customize gauge colors in Settings. GARAGE FOR YOUR CARS Save vehicles, pick a preferred car, and keep history tied to the right truck or daily driver. CRANKDATA PRO (OPTIONAL) Unlock Mode 06 early warnings, emissions coaching, battery health trends, smart alerts, Home Screen & Lock Screen widgets, CarPlay, freeze-frame history, repair cost ranges, service reminders, Siri shortcuts, and more. FREE INCLUDES • Live engine vitals • Code reading & plain-English decode • Quick Reset • One garage vehicle • Readiness glance WHAT YOU NEED • iPhone with Bluetooth • Compatible wireless OBD-II adapter • Ignition ON (engine can be running or off, depending on the car) CrankData is a diagnostic companion — it doesn’t replace a professional shop scan tool for every manufacturer-specific test. Always drive safely; don’t interact with the phone while the vehicle is moving. Questions or adapter tips? We’re building CrankData for real cars and real owners. License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Xm Diagrams at none against CrankData's 3. Xm Diagrams also leads on iOS requirement (15.6 vs 18.0). CrankData's advantage is update cadence (every 3 weeks vs every 4 months). On price, 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
Both are free to download. CrankData sells 3 in-app purchases, starting at $4.99 per month. Xm Diagrams asks for nothing beyond the download.
Xm Diagrams ships an update every 4 months, CrankData every 3 weeks. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.
| Parameter | Xm Diagrams | CrankData |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 32 MB | 9 MB |
| Age rating | 4+ | +4 |
| Developer | Tramontána Computing LLC | Cameron Howard |
In-app purchases
Xm Diagrams
No in-app purchases
CrankData
- CrankData Pro Monthly$4.991 Month
- Pro Yearly$29.991 Year
- CrankData Lifetime$59.99
