Comparison

Strap Angles vs MaxFLCalc

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

Head to head
About

Strap Angles

This app helps measure the floor and centerline angles of cargo straps using your iPhone or iPad. It guides you through a simple calibration and measurement process, allowing you to share the results and perform a reasonability check.

Highlights
  • Calibrate device orientation
  • Measure floor and centerline angles
  • Share angle measurements
  • Reasonability check for measurements
  • Information on cargo strapping
Features
Read full description

Measure the floor and centerline angles of a cargo strap by following a 2 step process: STEP 1 - CALIBRATE The first step is to calibrate the initial position and orientation of your iPhone or iPad. Calibrate by placing your iPhone or iPad flat and level next to the strap's tie-down fitting (double stud fitting or ring), pointing the top of the phone in the aircraft's forward direction, and tapping the red arrow button. STEP 2 - MEASURE The second step is to measure the strap's floor and centerline angle by moving the iPhone or iPad to the strap Place the edge of your iPhone or iPad against the strap while pointing the top of the iPhone or iPad towards the strap's first contact point with the cargo and pointing the bottom of the phone towards the strap's tie-down fitting. Tap the orange arrow button to lock the measurement. SHARE Tap the Share button on the app's bottom toolbar to copy, save, text, email, AirDrop, post, or send the angle measurements. Enter the strap's identification number if you need to keep track of different straps. REASONABILITY CHECK Before using your measured floor and centerline angles to determine strap restraint capability, you must do a reasonability check which verifies that the measurements represent reasonable angles of the strap. For example, if a strap is installed so that it looks close to straight up and down, a reasonable value for the floor angle measurement would be 80 to 90 degrees. If a strap is installed so that it looks like it extends in the forward direction along the floor, a reasonable value for the centerline angle would be from 0 to 10 degrees, and a reasonable value for the floor angle would be from 0 to 10 degrees. If either your floor angle or centerline angle measurement does not appear reasonable, then do not use the measurements and determine why there is an error. ULDCARE ULDCARE is the sponsor of this app. Tap the ULDCARE button on the app's bottom toolbar for more information on strapping cargo.

About

MaxFLCalc

Read full description

With this app, you can determine if the maximum weight of your shipment falls within aircraft limits or if you need to use supporting material in order to increase contact area and protect the aircraft structure from being overloaded. By using this app, you don't need to make a manual calculation and convert inches to centimeters, app will do it for you. Additional checks are included in the app (e.g., ULD position maximum weights).

Screenshots

Strap Angles4 screens
MaxFLCalc3 screens

Verdict

The call

The clearest difference is update cadence: Strap Angles at weekly against MaxFLCalc's every 4 months. Strap Angles also leads on iOS requirement (10.3 vs 15.1). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Strap Angles ships an update weekly, MaxFLCalc every 4 months. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
Strap Angles versus MaxFLCalc: the parameters behind the verdict, then further details
ParameterStrap AnglesMaxFLCalc
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.3 — better15.1
Further details — not scored
Size14 MB51 MB
Age rating4+4+
DeveloperBlair DuBoisAlexander Bugaev

In-app purchases

None

Strap Angles

No in-app purchases

None

MaxFLCalc

No in-app purchases

Questions

Is Strap Angles free?
Strap Angles is free to download, with no in-app purchases.
Is MaxFLCalc free?
MaxFLCalc is free to download, with no in-app purchases.
Do Strap Angles or MaxFLCalc have ads?
Neither Strap Angles nor MaxFLCalc shows ads.
Which is updated more often, Strap Angles or MaxFLCalc?
Strap Angles ships an update weekly, and MaxFLCalc every 4 months. Most recently, Strap Angles was updated on September 30, 2026 and MaxFLCalc on October 1, 2026.

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