# Master-Nav — user reviews > 32 indexed App Store user reviews of Master by Peterjohn Chisholm, rated 4.70/5 from 94 ratings. - Source: https://appshunter.io/ios/app/master-nav/id1602390396/reviews - App overview in markdown: https://appshunter.io/ios/app/master-nav/id1602390396.md - Rating breakdown: 5★ 79 · 4★ 10 · 3★ 2 · 2★ 1 · 1★ 2 ## Newest reviews (18 of 32) ### 5/5 — Excellent *2025-08-29, version 1.35* There is a huge opportunity for anyone willing to produce decent education/training solution. The marine industry has struggled to move on from flash cards. Great app, thank you for creating it. Hope it is a success. A few suggestions below for future features. Update your App Store text (look at App Store optimisation guidance) to make it more discoverable. I only found it because I searched for colregs. The ability to change font size for those of us of a certain age :) Distinguish between the rules (text) and your guidance for clarity. ### 5/5 — Excellent *2025-06-12, version 1.33* I’m a novice hobby sailor and this app was created with professionals in mind, but reading reviews of other similar apps there was always someone who had found inaccuracies. So I went with Master-Nav and I’m very glad I did. An excellent learning aid. ### 5/5 — Amazing App *2025-06-05, version 1.33* The best COLREGS app i have found. Only addition i can think of to make it even better than perfect would be to add in a test that tests randomly all questions at once. Other than that 5 stars. ### 5/5 — Great App *2025-05-27, version 1.33* I use this app several times a week. Just to keep my knowledge and of the rules fresh in my addled mind! ### 5/5 — Revision *2025-05-20, version 1.33* I’m presently studying for the Master 200 . This app has been extremely helpful in learning . The teaching and test parts are excellent ### 5/5 — Top tier *2025-04-26, version 1.33* Massive help to learning Colregs breaks them down into understandable chunks. 10/10 ### 5/5 — Brilliant app *2024-11-19, version 1.29* Helped me pass my signal exams first try by just using the app for 2 days! ### 5/5 — Simple but effective *2024-11-11, version 1.29* Good strategy, simple but effective. Food qestion and answer sessions ### 5/5 — Great Refresher and Prep Tool *2024-11-10, version 1.29* I’m getting ready to start training for my next assignment on a ship. This is an easy to use tool. I was just looking for the COLREGS test questions, but the Review modules are extremely helpful. It’s like having a high level Maritime Rules of the Road instructor on your phone. ### 5/5 — Great for SWOs going to BDOC *2024-10-12, version 1.29* I couldn’t just read COLREGS and make it stick to my brain for sheee, thank god for this app and the creators of this dynamic way of memorizing rule by rule. Because if your going to be navigating a multi million-billion dollar ship make sure you have this memorized to the T! ### 5/5 — Good app, with one Glitch *2024-06-24, version 1.29* Excellent app, but does have a glitch when reviewing lessons. One question repeats that doesn’t have the right answer as an option. ### 5/5 — Great help *2023-11-27* Just a great App to learn everything about the Colregs rules. Helped me a lot ! I strongly recommend it ! Thank you ### 5/5 — Very informative *2023-03-09, version 1.11* At first I found this app to be fairly daunting when I opened it. There are approximately 68 different sections to learn. However, once I got started I found the app to be very informative, as easy to understand as colreg rules can be and I also like the different style of questions. In summery, I think this app is very useful for anyone considering EDH, AB or Cadetship. ### 5/5 — Thumbs up! *2022-08-29, version 1.10* Excellent app. A lot of thought went into this app! ### 5/5 — Lights and shapes made easy! *2022-07-19, version 1.9* Great app for learning the lights and shapes - takes you through step by step with loads of questions to make it stick. ### 5/5 — Great for prep! *2022-07-19, version 1.9* Doing my oral prep. This App really helped - loads of questions, with quick access to the rule that the question is about. ### 5/5 — Excellent *2022-05-26, version 1.8* Best thing since sliced bread! Very convenient, good lay out and easy to understand. Worth every penny. ### 5/5 — Great app for Yacht Crew! *2022-03-17, version 1.4* Taught me so Much - easy to use and test myself. Absolutely must have for navigation expertise. ## Most critical reviews (10 lowest-rated) ### 3/5 — Great app but could be better *2025-01-09, version 1.29* Great app. Please make distinction of inland/international more apparent. Also, when completing every rule please allow for resetting the progress so that I can go back and “learn.” After I finished everything there was a window congratulating me on getting through everything but when I attempted to reset, the app did not allow it. Thank you. ### 4/5 — Overall pretty good *2024-07-07, version 1.29* Good way to go about learning the rules as they’re broken down into sections in a way that could assist in learning them by heart better. The pictures and overall layout is nice and the UI is simple and effective. Lights observations, the wording could be a lot better for some of these, missing out some crucial aspects on how we should formulate proper answers to orals questions for UK exams at least. There should be more situational questions that would be framed in the same way you would expect in an orals exam e.g identify vessel, identify the situation, identify the action and under which rule you are taking action. ### 5/5 — Cramming for YM costal *2026-06-10, version 1.49* Seems a good way to learn. Likening the format. ### 5/5 — Highly recommended *2026-06-07, version 1.49* I’ve used this extensively while preparing for RYA Coastal Skipper theory, and found it excellent, very useful and good value. The IALA and Test apps are very good too. ### 5/5 — Unreal *2026-04-28, version 147* Get this for learning your colregs ### 5/5 — Day Skipper Theory *2026-04-19, version 147* Brilliant App for learning so much knowledge with good educational practice of retrieval and interleaving of previous info. Great for micro learning. ### 5/5 — Excellent for studying *2026-02-17, version 1.42* Relevant questions with realistic multiple choice. Imagines for lights are good quality. All positive feedback for this app, tried out 3-4 and this is the best by far for cost and effectiveness. ### 5/5 — Really helpful app *2026-02-03, version 1.40* I’m only doing my Day Skipper theory but this app is helping the Colregs go in and stick much faster than the usual flash cards or trying to read it all through. It helps you to understand the rules by breaking them down one by one - in whichever order you choose - and then gives you the practice opportunity to reinforce what you’ve just learned. Great for a quick ten minutes or a longer session. I don’t need to know them all yet so I can concentrate on the ones I need for the theory exam and as I progress I will definitely use this app to build on my knowledge. ### 5/5 — Great app ❤️ *2026-01-20, version 1.38* Informative and Challenging- great learning tool and testing your knowledge. Easy to follow with scoring capabilities to monitor your progress.Great app ### 5/5 — Highly recommended *2025-12-05, version 1.35* If you need to learn the rules of the road then get this app ## Most praised reviews (2 highest-rated) ### 5/5 — How to i get the very first page again *2025-09-19, version 1.35* There was a first page about all the colregs 1-4 , 4-18 i dont see it anymore ### 5/5 — The best *2025-09-13, version 1.35* This is the best app for learning Colregs guys, I highly recommend it👏. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*