Comparison

Fault Code Library vs Util Master

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

Head to head
About

Fault Code Library

Features
Read full description

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 ‘hidden’ 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.

About

Util Master

Master Counter-Strike 2 utilities with a comprehensive guide to smokes, flashes, and molotovs. Learn precise lineups for every map with detailed visuals and video tutorials to improve your gameplay.

Highlights
  • Extensive library of CS2 utility lineups
  • High-resolution map overviews
  • Step-by-step video tutorials
  • T-side and CT-side strategies
  • Regular updates with new content
Features
Read full description

Util Master is the ultimate CS2 (Counter-Strike 2) utility training app, designed to help you master smokes, flashes, and molotovs with precision. Whether you're learning your first lineup or perfecting advanced strategies, Util Master gives you the tools to dominate every match. Choose from an extensive library of lineups for every map in CS2, including Mirage, Inferno, Dust II, Nuke, Overpass, Anubis, and more. Each utility spot is clearly marked on a detailed map, showing exactly where to stand and where to aim. Watch step-by-step video tutorials to ensure perfect execution every time. Learn how to throw the perfect smoke to block sightlines, a flashbang to blind your enemies, or a molotov to clear critical positions. Build your own personalized library! Found a sick smoke on Instagram, TikTok, or YouTube? You can now share videos directly from your favorite social apps to Util Master and never lose track of that perfect throw again. Key Features • Complete utility library for smokes, flashes, and molotovs on all CS2 maps. • Personal Library: Save video lineups directly from Instagram, TikTok, and YouTube. • High-resolution map overviews with labeled utility spots. • Step-by-step video guides showing exact throws and positions. • Covers both T-side and CT-side lineups for every map. • Perfect for new players learning basics and experienced players mastering advanced tactics. • Regular updates with new maps and utility spots. Why Use Util Master? In Counter-Strike 2, precise utility usage can win rounds before the first bullet is fired. By mastering lineups, you gain tactical control, force enemy rotations, and create openings for your team. Util Master makes learning and practicing lineups easy, fast, and accurate. How It Works 1. Select your map. 2. Choose smoke, flash, or molotov. 3. View origin position and target area. 4. Watch the video tutorial and replicate the throw in-game. Whether you play casually with friends or compete in ranked matches, Util Master helps you stay one step ahead. Gain the tactical edge in CS2 — download Util Master now and start mastering your utility game today!

Screenshots

Fault Code Library2 screens
Util Master4 screens

Verdict

The call

The clearest difference is price: Util Master at Free against Fault Code Library's $1.99. Util Master also leads on update cadence (every 5 weeks vs every 17 months). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Util Master is free to download; Fault Code Library costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fault Code Library ships an update every 17 months, Util Master every 5 weeks. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 8 level
Fault Code Library versus Util Master: the parameters behind the verdict, then further details
ParameterFault Code LibraryUtil Master
Price$1.99Free — better
Rating—3.8 (4 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 17 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size68 MB55 MB
Age rating4+17+
DeveloperHITS-UKHartvig Solutions

In-app purchases

None

Fault Code Library

No in-app purchases

None

Util Master

No in-app purchases

Questions

Is Fault Code Library free?
Fault Code Library costs $1.99, with no in-app purchases.
Is Util Master free?
Util Master is free to download, with no in-app purchases.
Do Fault Code Library or Util Master have ads?
Neither Fault Code Library nor Util Master shows ads.
Which is updated more often, Fault Code Library or Util Master?
Fault Code Library ships an update every 17 months, and Util Master every 5 weeks. Most recently, Fault Code Library was updated on October 8, 2026 and Util Master on October 17, 2026.

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