Comparison

VRflow B737NG vs 737 Master Caution

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

Head to head
About

VRflow B737NG

An interactive cockpit procedure trainer for the B737 NG, designed to enhance learning for type ratings, sim checks, and MCC courses. It offers detailed procedural training, system familiarization, and multi-crew simulation.

Highlights
  • Interactive cockpit procedure training
  • Normal procedures and memory items
  • Cockpit familiarization/Explore Mode
  • Multi-crew training with automatic crew member
  • Dynamic checklists and step-by-step explanations
  • Realistic aircraft systems and flight deck modeling
Read full description

Boost your learning rate with VRflow B737NG, an advanced, interactive cockpit procedure trainer for the B737 NG. Get ready for your type rating, sim check, MCC course or your next flight with this strong learning tool, build specifically for efficient cockpit procedure training. FULL VERSION FEATURES (requires subscription): • Normal procedures, including CDU preflight • Memory items • Cockpit familiarization/Explore Mode • Callouts • Flow visualizations • Train as Captain or First Officer and as PF or PM • Dynamic checklists • Step-by-step procedure explanations • Dynamic aircraft systems and screens • Automatic crew member to train with • Training Mode/Exam Mode DEMO VERSION FEATURES (free) • One normal procedure included • Automatic crew member • Explore Mode not available VRflow is a well-proven procedure training platform used by airlines, ATOs and air forces worldwide. Enjoy the benefits of the most efficient procedure training platform, originally build for virtual reality and now available on iOS. Advanced visual learning technologies are incorporated to accelerate learning rate and improve knowledge retention. VRflow enables multi-crew training with the automatic crew member, who will assume the opposite rank and role. If you train as F/O, you will get an automatic captain to train with. You can swap roles between Pilot Flying (PF) and Pilot Monitoring (PM). You will learn and understand the structure and task sharing of procedures, the correct callouts and flows. Explore Mode enables you to explore and understand the switches, knobs, levers, panels and screens of the cockpit interactively. All aircraft systems behave realistically, so you will become familiar with how the aircraft behaves in real life. The aircraft even maneuvers automatically, providing you with the correct visual cues and context of a flight. The entire flight deck is modeled accurately in 3D, including screens and the outside world. VRflow has been tested by real life pilots, type rated on the B737NG. NOTE: VRflow is a procedure trainer - NOT a flight simulator. Read the end user license agreement (EULA) here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

737 Master Caution

This app provides a comprehensive reference for over 200 warning lights and messages across B737 Classic, NG, and MAX aircraft families. It includes tools for abbreviations, FMC messages, circuit breakers, and electrical buses, aiding pilot training and aviation enthusiasts.

Highlights
  • References over 200 B737 warning lights and messages
  • Filter by aircraft family (Classic, NG, MAX)
  • Full text search for specific lights
  • Personal notes and bookmarking
  • Reference tools for abbreviations, FMC messages, circuit breakers, and electrical buses
Features
Read full description

This app references more than 200 warning lights and messages of the B737 Classic, NG and MAX families. You are a pilot preparing your initial 737 type rating training, or an aviation enthusiast, or a flight simulator fan. You should enjoy this app. - Warning lights are grouped by FCOM chapters. - You may filter warning lights by airplane family / generation (Classic, NG or MAX). - Full text search to find a specific light. - Add your personal notes for each light and use the app as a notebook. - Place a bookmark to specific warning lights. You will also find 4 other tools, as reference : - A complete list of abbreviations with more than 400 definitions. - Full explanation of more than 100 FMC messages. - Position of more than 500 circuit breakers, sorted by ATA codes or by panels. - List of all electrical buses and more than 500 associated services. A great tool during your initial type rating training or during a refresher later. For training purposes ONLY. Do not use in-flight. Should you spot any error or have any suggestion, feel free to contact : support@babdreams.com Enjoy.

Screenshots

VRflow B737NG4 screens
737 Master Caution4 screens

Verdict

The call

The clearest difference is rating: 737 Master Caution at 4.4 against VRflow B737NG's 3.2. 737 Master Caution also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.0). On price, ratings volume, update cadence and ads 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

Both are free to download. VRflow B737NG sells 1 in-app purchase, starting at $22.49 per month. 737 Master Caution asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

737 Master Caution holds the better App Store score, 4.4 against 3.2. Both are backed by a comparable volume of ratings — 6 and 7 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 30, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
VRflow B737NG versus 737 Master Caution: the parameters behind the verdict, then further details
ParameterVRflow B737NG737 Master Caution
PriceFreeFree
Rating3.2 (6 ratings)4.4 (7 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings67 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size912 MB2 MB
Age rating4+4+
DeveloperVRpilot ApSStudio BabDreams

Customer experience

VRflow B737NG

All ratings6 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

737 Master Caution

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

1 purchases

VRflow B737NG

Subscriptions1
  • B737NG monthly subscription$22.491 Month
None

737 Master Caution

No in-app purchases

Questions

Is VRflow B737NG free?
VRflow B737NG is free to download, with in-app purchases available.
Is 737 Master Caution free?
737 Master Caution is free to download, with no in-app purchases.
Which has better reviews, VRflow B737NG or 737 Master Caution?
737 Master Caution is rated higher. VRflow B737NG averages 3.2 out of 5 from 6 ratings, while 737 Master Caution averages 4.4 from 7 ratings.
Do VRflow B737NG or 737 Master Caution have ads?
Neither VRflow B737NG nor 737 Master Caution shows ads.
Which is updated more often, VRflow B737NG or 737 Master Caution?
VRflow B737NG ships an update every 3 months, and 737 Master Caution every 3 months. Most recently, VRflow B737NG was updated on September 30, 2026 and 737 Master Caution on October 15, 2026.

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