Fault Code Library vs Auto Parts Catalog
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Fault Code Library
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Fault Code Library is, quite simply, a library containing nearly every fault code for nearly every BMW made, worldwide, since on board diagnostics were installed. Most recent BMW vehicles can show you the errors stored in memory without the need for any other equipment. This is usually found through a βhiddenβ service menu and usually can be accessed using one of the buttons on the dash. BMW error codes are given in hexadecimal (hex) format (looking like 0x1234ABCD). Because there are so many fault codes from so many different electronic control units (ECUs), many cheap OBD readers cannot give you the whole story. Even professional OBDII readers may not have all the fault codes generated as OBDII does not cover all manufacturer-specific faults. Fault Code Library has been designed to tell you what a fault code means and which ECU is generating it. It uses the native hexadecimal format so that you get the full fault details. The library contains over 19,000 fault codes and their meanings. It does not use an Internet connection, so it is always with you, wherever you are even when you have no Internet access. Fault Code Library has been written for BMW enthusiasts worldwide as well as independent garages/specialists. Fault Code Library is also useful for research. The app covers DME/DDE codes for nearly all petrol and diesel BMWs, however, at this time hybrid and pure electric models are not in this release. Another feature is the ECU location function. Once you have entered a valid hex code into the search bar, the app will tell you which ECU is generating the fault and will show you approximately where the ECU may be located. This is possibly one of the most comprehensive libraries available, and is continually being updated and improved. NOTE: This does not connect to the vehicle. This is a full library of codes that interpret On-Board Diagnostics found in the vehicle history.
Auto Parts Catalog
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Auto Parts Catalog puts the full original spare-parts catalog in your pocket. Pick your car brand and find the exact part you need through clear, interactive diagrams β just like professional catalogs, right on your iPhone. HOW IT WORKS The app guides you step by step: β’ Choose your car brand β’ Find your model β with search and smart grouping β’ Open the assembly and its parts diagram β’ Tap a part directly on the image to see its number and details β’ Check cross-references and compatible parts KEY FEATURES β’ Interactive parts diagrams β tap an element on the image to identify the part β’ Full drill-down: categories β models β assemblies β diagrams β parts β’ Search across models and groups β’ Favorites β save the parts you need and come back to them anytime β’ Cross-reference lookup for alternatives and compatible numbers β’ 10 interface languages β the whole catalog in your language β’ Fast, clean loading with clear states WHO IT'S FOR β’ Car owners β pick the right part before you buy β’ Mechanics and workshops β quick access to diagrams on the job β’ Parts sellers β verify numbers and alternatives No clutter β just fast, clean access to the catalog. New car brands are added regularly. Download Auto Parts Catalog and keep the entire parts catalog always at hand. Privacy Policy: https://autopartsiphone.blogspot.com/2026/07/privacy-policy-auto-parts-catalog.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Auto Parts Catalog at Free against Fault Code Library's $1.99. Auto Parts Catalog also leads on update cadence (weekly vs every 17 months). Fault Code Library's advantage is in-app purchases (none vs 5) and iOS requirement (15.0 vs 17.0). On 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
Auto Parts Catalog is free to download; Fault Code Library costs $1.99 up front. Auto Parts Catalog sells 5 in-app purchases, starting at $19.99 per year. Fault Code Library asks for nothing beyond the download.
Fault Code Library ships an update every 17 months, Auto Parts Catalog weekly. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.
| Parameter | Fault Code Library | Auto Parts Catalog |
|---|---|---|
| Price | $1.99 | Free β better |
| Update frequency | Every 17 months | Weekly β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.0 β better | 17.0 |
| Further details β not scored | ||
| Size | 68 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | HITS-UK | Inna Chornaya |
In-app purchases
Fault Code Library
No in-app purchases
Auto Parts Catalog
- Unlimited - 1 Year$19.991 Year
- Free CoinsFree
- 10 Diagrams$1.99
- 50 Diagrams$6.99
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- 100 Diagrams$9.99
Questions
Is Fault Code Library free?
Is Auto Parts Catalog free?
Do Fault Code Library or Auto Parts Catalog have ads?
Which is updated more often, Fault Code Library or Auto Parts Catalog?
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