Comparison

iPreFlight3 vs VOCUS Safety

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

Head to head
About

iPreFlight3

This app helps pilots quickly calculate available payload and fuel for flights. It integrates runway analysis, weight and balance, and flight planning with weather data. Users can prepare flight books and releases, and share them with crew.

Highlights
  • Max Payload Estimator (MPE™)
  • Runway Analysis (RWA)
  • Weight and Balance (WB)
  • Flight Planning with Fuel Calculation
  • Flight Book preparation
  • Flight Release generation and sharing
Read full description

Aircraft Performance Group (APG) has released an application for use on the iPad, which integrates their Runway Analysis (RWA) and Weight and Balance (WB) system with a flight planning module. The combination of these functions allows the user to easily and quickly calculate the available payload for a planned flight – this service is known as MPE™ (Max Payload Estimator). iPreFlight™, has been developed to run on the iPad using the latest iPad technology. iPreFlight™ is a first-of-a-kind product that requires minimum user input to quickly calculate the available payload for a given city pairing, considering takeoff/landing performance limitations, manufacturers WB requirements and flight planning constraints. The flight planning element utilizes manufacturer’s operational data, in conjunction with current forecast weather conditions to calculate the fuel required for the flight. The fuel calculation includes fuel burn (optimized for minimum fuel or time), reserve, alternate and holding fuel. In addition to including the RWA, WB and flight plan, iPreFlight™ allows the user to prepare a Flight Book, containing all textual and graphical weather products for the planned flight. The book may be prepared days in advance of the flight, stored on the iPad and can be automatically updated as products are revised. Approaching departure time the user can easily prepare a Flight Release, consolidating the RWA, WB, flight plan and weather products. The Flight Release may then be emailed, stored on the iPad and/or shared with another iPad, such as the other fight deck crewmembers’, by simply selecting the appropriate distribution method(s). iPreFlight consolidates several preflight functions into one program, not only ensuring accurate takeoff and landing performance limits and correct aircraft loading, but allows pilots to quickly calculate the available payload and fuel requirements for a flight. In addition, iPreflight™ allows pilots to make last minute adjustments with just a few keystrokes. The Flight Release may then be saved on the iPad for review in-flight and shared with the other crewmember, Application Requirements: To use this application you must be an existing APG customer having a Runway Analysis (Point Calculation) and Weight and Balance services account.

About

VOCUS Safety

This platform offers a comprehensive safety software solution for aviation professionals. It provides seamless integration with third-party tools and allows for easy safety reporting, document access, and training content viewing on mobile devices.

Highlights
  • Seamless 3rd-party integrations
  • Easy safety reporting (online/offline)
  • Photo submission with reports
  • Download Vector SMS documents
  • Access training content
  • Full mobile functionality
Read full description

At Polaris Aero we took our years of flying experience, blended with our passion for aviation safety, to give you a transformative safety software platform – VOCUS. VOCUS provides a simple interface with seamless 3rd-party integrations. VOCUS is a safety software platform that offers one-stop access to all current and future Polaris Aero applications. You must have an active VOCUS account to use this app. Your current username and password are all you need to login and start using VOCUS on your mobile device. The iOS app provides full functionality of all your VOCUS applications, plus: -Easy safety reporting online or off - submit photos with your report -Download your Vector SMS documents to your mobile device -Access your training content (iPad recommended)

Screenshots

VOCUS Safety4 screens

Verdict

The call

The clearest difference is review sentiment: VOCUS Safety at 100% against iPreFlight3's 5%. VOCUS Safety also leads on rating (4.5 vs 3.1). iPreFlight3's advantage is ratings volume (55 vs 16). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

VOCUS Safety holds the better App Store score, 4.5 against 3.1. Both are backed by a comparable volume of ratings — 55 and 16 respectively. Written reviews point the same way: 5% of iPreFlight3's written reviews are positive against 100% of VOCUS Safety's.

UpkeepUpdate frequency

iPreFlight3 ships an update every 6 weeks, VOCUS Safety every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 7 level
iPreFlight3 versus VOCUS Safety: the parameters behind the verdict, then further details
ParameteriPreFlight3VOCUS Safety
PriceFreeFree
Rating3.1 (55 ratings)4.5 (16 ratings) — better
Positive reviews5.0% of reviews100.0% of reviews — better
Number of ratings55 — better16
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad — better
Requires iOS16.0 — better16.4
Further details — not scored
Size29 MB34 MB
Age rating4+4+
DeveloperAircraft Performance Group, LLCPolaris Aero, LLC

Customer experience

iPreFlight3

All ratings55 ratings
Positive50.9%
Neutral7.3%
Negative41.8%
Written reviews20 reviews
Positive5.0%
Neutral30.0%
Negative65.0%

VOCUS Safety

All ratings16 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iPreFlight3

No in-app purchases

None

VOCUS Safety

No in-app purchases

Questions

Is iPreFlight3 free?
iPreFlight3 is free to download, with no in-app purchases.
Is VOCUS Safety free?
VOCUS Safety is free to download, with no in-app purchases.
Which has better reviews, iPreFlight3 or VOCUS Safety?
VOCUS Safety is rated higher. iPreFlight3 averages 3.1 out of 5 from 55 ratings, while VOCUS Safety averages 4.5 from 16 ratings.
Do iPreFlight3 or VOCUS Safety have ads?
Neither iPreFlight3 nor VOCUS Safety shows ads.
Which is updated more often, iPreFlight3 or VOCUS Safety?
iPreFlight3 ships an update every 6 weeks, and VOCUS Safety every 2 months. Most recently, iPreFlight3 was updated on November 1, 2026 and VOCUS Safety on November 2, 2026.

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