Comparison

MaxFLCalc vs ShellBox OTA

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

Head to head

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).

About

ShellBox OTA

Features

Read full description

ShellBox is a dedicated OTA management application designed for outdoor sports equipment, with its core functions being device connection and firmware update. It features a streamlined and intuitive operation process.

Screenshots

MaxFLCalc3 screens

ShellBox OTA4 screens

Verdict

The call

The clearest difference is update cadence: ShellBox OTA at weekly against MaxFLCalc's every 4 months. ShellBox OTA also leads on iOS requirement (13.0 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

MaxFLCalc ships an update every 4 months, ShellBox OTA weekly. The most recent releases landed on September 13, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 4 level

MaxFLCalc versus ShellBox OTA: the parameters behind the verdict, then further details
Parameter	MaxFLCalc	ShellBox OTA
Price	Free	Free
Update frequency	Every 4 months	Weekly — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	15.1	13.0 — better
Further details — not scored
Size	51 MB	33 MB
Age rating	4+	4+
Developer	Alexander Bugaev	黎鑫邓

In-app purchases

None

MaxFLCalc

No in-app purchases

None

ShellBox OTA

No in-app purchases

Questions

Is MaxFLCalc free?

MaxFLCalc is free to download, with no in-app purchases.

Is ShellBox OTA free?

ShellBox OTA is free to download, with no in-app purchases.

Do MaxFLCalc or ShellBox OTA have ads?

Neither MaxFLCalc nor ShellBox OTA shows ads.

Which is updated more often, MaxFLCalc or ShellBox OTA?

MaxFLCalc ships an update every 4 months, and ShellBox OTA weekly. Most recently, MaxFLCalc was updated on September 13, 2026 and ShellBox OTA on September 21, 2026.