Comparison

iAIP CZ vs RLM

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

Head to head
About

iAIP CZ

Access the Czech Aeronautical Information Publication and an airport database. This utility works both online and offline, providing essential aviation data.

Highlights
  • Offline reader
  • Online reader
  • Czech Aeronautical Information Publication
  • Airport database
  • Aviation data
Features
Read full description

This is offline/online reader of Czech Aeronautical Information Publication with airport database.

About

RLM

This aviation computer app offers a comprehensive suite of tools for pilots. It calculates various flight parameters, including altitude, airspeed, ground speed, wind components, and weight & balance. The app also features unit and currency conversions, making it a versatile utility for aviation professionals.

Highlights
  • Altitude & Cloud Base Calculations
  • Airspeed & Ground Speed Calculations
  • Wind Component & Correction Tools
  • Weight & Balance Calculations
  • Unit & Currency Conversion
  • Holding Pattern & Flight Plan Tools
Features
Read full description

The RLM-Flight app is the ultimate aviation computer. Designed with a clear beautiful interface and easy to use through direct menu selection with all variables at sight converting it in the most powerful, versatile and useful aviation computer you may have in your iOS device. The RLM-Flight has a extensive Menu System: >Altitude & Cloud Base Worksheets: Calculate Pressure Altitude, Density Altitude, Barometric Pressure or Outside Temperature with or without humidity. Also calculates the Cloud Base above ground and Clouds Temperature knowing the Outside Temperature and Dew Point. >Standard Atmosphere: Calculate the Altitude, Temperature or Pressure and the Air Density and Speed of Sound in the International Standard Atmosphere (ISA). > Airspeed Calculations: Calculate the True Air Speed, Calibrated Air Speed, Outside Temperature, Mach number, Total Air Temperature or Pressure Altitude. >Ground Speed & Fuel Rate: Calculate the Ground Speed, Distance, Duration or Fuel consumption. >Glide & Climb/Descent: Calculate Horizontal Distance, Glide Ratio, Descent or Climb Altitude, Angle and Ratio. >Wind Components: Calculate Cross Wind, Head Wind, Run Way, Wind Speed or Wind Direction. >Wind Correction: Calculates the Ground Speed, True Course, True Air Speed, True Heading, Wind Speed or Wind Direction and the Wind Correction Angle. >Compass Heading: Calculate True Heading, Magnetic Heading, Compass Heading, Variation or Deviation. >Holding Pattern & From-To: Calculate the type of entry necessary and the inbound heading to enter in a holding pattern given by the airplane Heading, the Holding Radial and the standard turn (left or right). Also, convert the course from a location into the course to the same location. >Rhumb Line: Calculate the True Course, Rhumb Line Distance and the Great Circle Distance for flight paths specified by latitude and longitude. >Flight Plan: Calculate the Total Distance, Estimated Time in Route, Estimated Time of Arrival and Fuel Burned in a cross country flight composed of an arbitrary number of legs. >Weight & Balance: Calculates the total weight and the resulting center of gravity of an airplane base on the loads arms, weights and/or moments of different items including the empty aircraft weight and center of gravity, pilots, passengers, fuel and cargo areas. >Weight Shift & %MAC: Calculate the change in Center of Gravity, change in Weight, change in Arm or total Weight given the others. Also calculate the %MAC, Center of Gravity, Mean Aerodynamic Chord or Leading Edge of MAC given the others. >Units Conversion: powerful and completely customizable physical units conversion calculations. >Currency Conversion: to calculate currency exchanges between two selected world currencies and common crypto currencies with manual or on-line rates. > Math Functions: to apply scientific functions to the displayed number including angles conversion, trigonometric functions, logarithmic function, decimal hour to hour:minute:seconds, etc. System requirements: iOS 15.0 or above. 30 days Free-Trial. In-App-Purchase: One-Payment for life. License Agreement: http://www.apple.com/legal/itunes/appstore/dev/stdeula DISCLAIMER: THE “RLM-Flight” SOFTWARE IS PROVIDED TO YOU ON AN "AS IS" BASIS. THE SOFTWARE IS NOT CERTIFIED BY ANY AUTHORITY AT THE MOMENT AND THE USER ASUMES ALL THE RESPONSIBILITY OF IT USE. THE LICENSOR DOES NOT REPRESENT OR WARRANT THAT THE SOFTWARE CALCULATIONS OR DATA MADE WILL BE FREE FROM MISTAKES OR ANY OTHER DEFECTS OR ERRORS AND THAT ANY SUCH EFFECTS OR ERRORS WILL BE CORRECTED, OR THAT IT WILL OPERATE WITHOUT INTERRUPTION. YOU AGREE THAT YOU ARE SOLELY RESPONSIBLE FOR ALL COSTS AND EXPENSES ASSOCIATED WITH RECTIFICATION, REPAIR OR DAMAGE CAUSED BY SUCH DEFECTS, ERRORS OR INTERRUPTIONS.

Screenshots

iAIP CZ3 screens
RLM4 screens

Verdict

The call

The clearest difference is rating: RLM at 5.0 against iAIP CZ's 1.0. RLM also leads on update cadence (every 3 weeks vs every 5 months). iAIP CZ's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and monetization model 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. RLM sells 1 one-off in-app purchase. iAIP CZ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RLM holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

iAIP CZ ships an update every 5 months, RLM every 3 weeks. The most recent releases landed on October 10, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
iAIP CZ versus RLM: the parameters behind the verdict, then further details
ParameteriAIP CZRLM
PriceFreeFree
Rating1.0 (1 ratings)5.0 (2 ratings) — better
Positive reviews31.3% of reviews—
Number of ratings12 — better
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size12 MB6 MB
Age rating4+4+
DeveloperIHPCI.org, z.s.R.L.M. Software

Customer experience

iAIP CZ

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews16 reviews
Positive31.3%
Neutral6.3%
Negative62.5%

RLM

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iAIP CZ

No in-app purchases

1 purchases

RLM

One-time1
  • Lifetime Full Access$9.99

Questions

Is iAIP CZ free?
iAIP CZ is free to download, with no in-app purchases.
Is RLM free?
RLM is free to download, with in-app purchases available.
Which has better reviews, iAIP CZ or RLM?
RLM is rated higher. iAIP CZ averages 1.0 out of 5 from 1 ratings, while RLM averages 5.0 from 2 ratings.
Do iAIP CZ or RLM have ads?
Neither iAIP CZ nor RLM shows ads.
Which is updated more often, iAIP CZ or RLM?
iAIP CZ ships an update every 5 months, and RLM every 3 weeks. Most recently, iAIP CZ was updated on October 10, 2026 and RLM on October 30, 2026.

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