Comparison

R.D. Murray Train Signals App vs CristCDL.com Practice Test CDL

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

Head to head
About

R.D. Murray Train Signals App

This app helps railroad professionals quickly learn and test their knowledge of standard NORAC signals and signs. It offers digital flashcards, timed tests, and a leaderboard for competitive study. Important operating rules are also included and updated periodically.

Highlights
  • Digital flashcards for NORAC signals and signs
  • Timed testing for signal recognition
  • Leaderboard for competitive scoring
  • Section on important NORAC operating rules
  • Periodic updates to rules and features
Features
Currently charting
Read full description

As a Conductor, Locomotive Engineer, Signal Person or other signal related professional in the railroad industry it's important to always be able to recognize the many railroad signals and signs. This app will help you do just that. It contains the standard NORAC signals and signs as digital flashcards allowing you to study anywhere at your own pace. The R.D. Murray Signals App is not just a digital deck of flashcards, it's also a testing system that allows you to improve you signal recognition ability by giving you a variety of ways to test your skill including a timed test. You can even post your score on a leaderboard and compete with your friends. There's also a section on important NORAC operating rules which we update periodically. With signals, signs and rules all accessible right from your smartphone, you'll always be on top of your game anytime and anywhere. This app is constantly being updated. We're working on adding leaderboards, better graphics for signs and other cool features soon. Please let us know what new features you'd like to have in the R.D. Murray Signals App

About

CristCDL.com Practice Test CDL

Prepare for your Commercial Driver's License (CDL) exams with state-specific practice tests. Access a comprehensive question bank, including specialized endorsements, and receive immediate feedback with explanations for each answer. Download your state manual for further study.

Highlights
  • State-specific practice tests
  • General Knowledge tests
  • Endorsement tests (Air Brakes, Tanker, etc.)
  • Pre-Trip Inspection tests and videos
  • Immediate answer feedback with explanations
  • Downloadable state CDL manuals
Features
Read full description

Put yourself in the drivers seat! Passing the CDL BMV exams made easy. With over 30 years experience in the CDL field we have more questions that appear on the CDL written exams than any other site. No sign up or sign in required, no payments to unlock tests, just great information at your fingertips. Our practice tests are state specific and include General Knowledge, Air Brakes, Combination, Tanker, Doubles and Triples, Hazardous Material, School Bus, Passenger, and have tests and videos for the Pre Trip Inspection. Each test provides immediate feedback on your answer, showing if you got it correct or incorrect with an explanation for the correct answer, and should be used along with you current state manual which we included in the app for download. Since 1999 we have offered these tests online, and are moving to provide them within an app!

Screenshots

R.D. Murray Train Signals App4 screens
CristCDL.com Practice Test CDL4 screens

Verdict

The call

The clearest difference is review sentiment: R.D. Murray Train Signals App at 100% against CristCDL.com Practice Test CDL's 16%. R.D. Murray Train Signals App also leads on rating (4.8 vs 1.7) and ads (none vs shown). CristCDL.com Practice Test CDL's advantage is price (Free vs $19.99) and ratings volume (123 vs 6). On in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

CristCDL.com Practice Test CDL is free to download; R.D. Murray Train Signals App costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

R.D. Murray Train Signals App holds the better App Store score, 4.8 against 1.7. That said, the two scores are not equally well evidenced: CristCDL.com Practice Test CDL has 123 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 100% of R.D. Murray Train Signals App's written reviews are positive against 16% of CristCDL.com Practice Test CDL's.

UpkeepUpdate frequency

R.D. Murray Train Signals App ships an update every 3 weeks, CristCDL.com Practice Test CDL every 5 months. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

Scorecard9 real differences · 2 level
R.D. Murray Train Signals App versus CristCDL.com Practice Test CDL: the parameters behind the verdict, then further details
ParameterR.D. Murray Train Signals AppCristCDL.com Practice Test CDL
Price$19.99Free — better
Rating4.8 (6 ratings) — better1.7 (123 ratings)
Positive reviews100.0% of reviews — better15.9% of reviews
Number of ratings6123 — better
Update frequencyEvery 3 weeks — betterEvery 5 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
Best chart rank#198 — better—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.3 — better15.5
Further details — not scored
Size48 MB8 MB
Age rating17+4+
DeveloperRICHARD D MURRAYWilliam Crist

Customer experience

R.D. Murray Train Signals App

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CristCDL.com Practice Test CDL

All ratings123 ratings
Positive8.9%
Neutral10.6%
Negative80.5%
Written reviews69 reviews
Positive15.9%
Neutral11.6%
Negative72.5%

In-app purchases

None

R.D. Murray Train Signals App

No in-app purchases

None

CristCDL.com Practice Test CDL

No in-app purchases

Questions

Is R.D. Murray Train Signals App free?
R.D. Murray Train Signals App costs $19.99, with no in-app purchases.
Is CristCDL.com Practice Test CDL free?
CristCDL.com Practice Test CDL is free to download, with no in-app purchases.
Which has better reviews, R.D. Murray Train Signals App or CristCDL.com Practice Test CDL?
R.D. Murray Train Signals App is rated higher. R.D. Murray Train Signals App averages 4.8 out of 5 from 6 ratings, while CristCDL.com Practice Test CDL averages 1.7 from 123 ratings.
Do R.D. Murray Train Signals App or CristCDL.com Practice Test CDL have ads?
CristCDL.com Practice Test CDL shows ads; R.D. Murray Train Signals App does not.
Which is updated more often, R.D. Murray Train Signals App or CristCDL.com Practice Test CDL?
R.D. Murray Train Signals App ships an update every 3 weeks, and CristCDL.com Practice Test CDL every 5 months. Most recently, R.D. Murray Train Signals App was updated on October 8, 2026 and CristCDL.com Practice Test CDL on October 18, 2026.

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