Comparison

OAR Tutoring vs Master

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

Head to head
About

OAR Tutoring

Prepare for the OAR exam with over 1400 practice questions covering math, reading, and mechanical comprehension. Access flashcards, homework problems, and practice tests. Offers optional one-on-one online tutoring sessions.

Highlights
  • 1400+ practice questions
  • Math Skills
  • Reading Comprehension
  • Mechanical Comprehension
  • Flashcards
  • Practice tests
  • Online tutoring
Features
Read full description

There are 1400+ OAR practice questions prepared by expert tutors. Each lesson contains homework problems and then a practice test. The application includes: • Math Skills • Reading Comprehension • Mechanical Comprehension • Final Practice test • Flashcards • OAR prediction test In addition to a mobile application, it provides unique flexibility in learning and offers effective online one-on-one tutoring sessions via Skype or Zoom. The first session/evaluation is free, so join the OAR Tutoring and become a part of the truly life-changing and successful journey that our students have accomplished. Subscription: Unlock Full OAR Access for $9.99/ month. If you don't choose to subscribe you can continue to use free lessons and tests. Privacy Policy: https://www.asvab-tutoring.com/privacy-policy/ Terms of Service: https://www.asvab-tutoring.com/terms-of-service/

About

Master

Learn maritime navigation rules with an interactive system designed for effective retention. This app breaks down complex regulations into manageable sections with visual aids and mnemonics. It revisits incorrect answers and provides instant graphical feedback, making the learning process intuitive and efficient.

Highlights
  • Interactive learning system
  • Step-by-step rule guidance
  • Mnemonics and memory aids
  • Interactive visuals
  • Graphical feedback on answers
  • Practice section with progress tracking
Features
Read full description

Master-Nav is a progressive COLREGS learning system developed by a Master Mariner. The COLREGS are notoriously difficult to learn and retain — Master-Nav makes it significantly easier through an interactive system built around how your brain actually works. Instead of guessing through random question banks, Master-Nav guides you step by step through every rule from start to finish. Wrong answers are revisited until the rules stick — properly. Complex regulations are broken down into learnable chunks — bite-sized sections supported by mnemonics, memory aids and interactive visuals designed around how the brain actually retains information. Every incorrect answer is shown graphically alongside the correct one — immediately clear, no confusion. And with a single tap, the relevant COLREGS rule is accessible from any question at any time. Master-Nav covers COLREGS Parts A to D — General, Steering & Sailing, Lights & Shapes and Sound & Light Signals — plus Annex IV Distress Signals. Over 1000 questions in multiple formats, with a dedicated Practice Section that tracks right, wrong and unanswered so you always know where to focus. COLREGS — the easy way.

Screenshots

OAR Tutoring4 screens
Master4 screens

Verdict

The call

The clearest difference is price: OAR Tutoring at Free against Master's $1.99. OAR Tutoring also leads on ratings volume (302 vs 100) and iOS requirement (13.0 vs 15.0). Master's advantage is review sentiment (97% vs 61%) and in-app purchases (none vs 1). On rating, 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

CostPrice · In-app purchases · Ads · Monetization

OAR Tutoring is free to download; Master costs $1.99 up front. OAR Tutoring sells 1 in-app purchase, starting at $14.99 per month. Master asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for OAR Tutoring against 4.8 for Master. Both are backed by a comparable volume of ratings — 302 and 100 respectively. Written reviews are what separate them: 61% of OAR Tutoring's written reviews are positive against 97% of Master's.

UpkeepUpdate frequency

OAR Tutoring ships an update every 4 months, Master fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard7 real differences · 3 level
OAR Tutoring versus Master: the parameters behind the verdict, then further details
ParameterOAR TutoringMaster
PriceFree — better$1.99
Rating4.7 (302 ratings)4.8 (100 ratings) — better
Positive reviews60.9% of reviews96.9% of reviews — better
Number of ratings302 — better100
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size25 MB117 MB
Age rating4+4+
DeveloperDebbrata DasPeterjohn Chisholm

Customer experience

OAR Tutoring

All ratings198 ratings
Positive90.9%
Neutral2.0%
Negative7.1%
Written reviews23 reviews
Positive60.9%
Neutral0.0%
Negative39.1%

Master

All ratings94 ratings
Positive94.7%
Neutral2.1%
Negative3.2%
Written reviews32 reviews
Positive96.9%
Neutral3.1%
Negative0.0%

Bugs and requests

OAR Tutoring

Reported bugs

6 issues
  • Login issues after registration
  • App not working after purchase
  • Cannot log in on computer/iPad
  • Buggy performance on iPhone
  • Glitchy answers
Show 1 more
  • Cannot submit tickets for issues

Requested features

5 requests
  • Provide explanations for all questions
  • Make all content accessible without extra subscription
  • Improve accuracy of reading comprehension section
  • Make math questions adaptive
  • Allow viewing of hidden lesson topics

Master

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

OAR Tutoring

Subscriptions1
  • Unlock Full OAR Access$14.991 Month
None

Master

No in-app purchases

Questions

Is OAR Tutoring free?
OAR Tutoring is free to download, with in-app purchases available.
Is Master free?
Master costs $1.99, with no in-app purchases.
Which has better reviews, OAR Tutoring or Master?
Master is rated higher. OAR Tutoring averages 4.7 out of 5 from 302 ratings, while Master averages 4.8 from 100 ratings.
Do OAR Tutoring or Master have ads?
Neither OAR Tutoring nor Master shows ads.
Which is updated more often, OAR Tutoring or Master?
OAR Tutoring ships an update every 4 months, and Master fortnightly. Most recently, OAR Tutoring was updated on October 24, 2026 and Master on October 25, 2026.

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