RLM vs ShrinkApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Altitude & Cloud Base Calculations
- Airspeed & Ground Speed Calculations
- Wind Component & Correction Tools
- Weight & Balance Calculations
- Unit & Currency Conversion
- Holding Pattern & Flight Plan Tools
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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.
ShrinkApp
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ShrinkApp - Zip & Compress helps you compress and manage files easily on your device. The app supports photo, video, audio, and PDF compression, along with ZIP file creation and extraction in a simple and clean interface. You can reduce file sizes to save storage space, organize files more efficiently, and share compressed files quickly. ShrinkApp also provides adjustable compression options for supported formats to help balance quality and file size based on your needs. Features: • Compress photos with quality adjustment • Compress videos to reduce storage usage • Compress PDF documents • Compress audio files • Create ZIP archives • Extract ZIP files • Simple and easy-to-use interface • Fast file processing ShrinkApp - Zip & Compress is designed for users who want a straightforward way to compress, extract, and manage files directly from their device. Terms of Use: https://muhammad-muzammil-muhammad-farhad.blogspot.com/2025/12/terms-conditions.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://muhammad-muzammil-muhammad-farhad.blogspot.com/2025/12/privacy-policy.html Go Pro to Unlock More: Upgrade to ShrinkApp - Zip & Compress Pro for unlimited access to all premium features. Subscription Options: Monthly Subscription Yearly Subscription Subscription Details: Payment is charged to your iTunes Account at confirmation of purchase Subscription automatically renews unless canceled at least 24 hours before the end of the current period Your account will be charged for renewal within 24 hours before the end of the current period Manage subscriptions and turn off auto-renewal in your Account Settings after purchase Any unused portion of a free trial will be forfeited once you subscribe.
Screenshots
Verdict
The clearest difference is ads: RLM at none against ShrinkApp's shown. ShrinkApp's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases 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
Both are free to download. RLM sells 1 one-off in-app purchase and ShrinkApp sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
RLM ships an update every 3 weeks, ShrinkApp every 5 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | RLM | ShrinkApp |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 91 MB |
| Age rating | 4+ | 4+ |
| Developer | R.L.M. Software | Muhammad Muzammil Muhammad Farhad |
In-app purchases
RLM
- Lifetime Full Access$9.99
ShrinkApp
- Monthly Plan$4.991 Month
- Annual Plan$14.991 Year









