Comparison

DA40 M&B mobile vs Control System Calc

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

Head to head
About

DA40 M&B mobile

Features
Read full description

Diamond DA40 Mass & Balance calculator! With easy and interactive weights adding and real time Chart plotting. You can calculate for the following Diamond models: DA40-180, DA40-XL / S, DA-40-F, DA40-P and DA40-NG Get access to Loading Charts for accurate reading. Red Dot "marks the Spot". Also Red warning alerts if you're overweight! Create your PDF file with your loadsheet in a professional looking sheet, save it, print it, share it or e-mail it! Includes regulatory data such as A/C registration, departure aerodrome, arrival aerodrome, time and date. Convert all necessary weight and fuel Units on a dedicated page. Mass and Balance was never so easy. Enjoy your Mass and Balance on your iPhone! Also Apps Available for a single Aircraft for Diamond DA20, Cessna C152, C172 and C182, Piper PA28, PA34 and PA44 or get All models in just one App

About

Control System Calc

Features
Read full description

Control System Calc (ControlCalc) is an engineering tool for control engineers, R&D staff and students. Enter a transfer function to perform PID tuning, frequency-domain analysis and time-domain simulation — turning textbook control theory into a pocket tool you can use anywhere. All calculations run locally on your device, no internet required. KEY FEATURES ā–  PID Tuning Five classic tuning methods built in: Ziegler-Nichols open-loop step, Cohen-Coon, Ziegler-Nichols closed-loop ultimate, plus IMC-Lambda and AMIGO. Each method includes guidance on when to use it. ā–  Closed-Loop Step Simulation Simulate the closed-loop step response with an FOPDT model and a PID controller with derivative filtering. View the control effort u(t) to spot actuator saturation, and fine-tune parameters by hand. ā–  Bode Plot & Stability Margins Draw magnitude and phase curves on a log scale, with automatic 0 dB / āˆ’180° reference lines, gain margin, phase margin and crossover frequencies — stability at a glance. ā–  Step Response & Performance Metrics RK4 time-domain simulation that automatically computes overshoot, rise time and settling time. ā–  Second-Order Designer Back-solve system parameters from overshoot Mp / settling time ts, or from damping ratio ζ / natural frequency ωn, then push them to the step-response page in one tap. ā–  Root Locus & Nyquist (Pro) Root-locus branch tracing with the imaginary-axis stability boundary, an equal-aspect Nyquist plot with unit circle, plus pole/stability analysis for deeper insight. THOUGHTFUL DETAILS • Built-in library of classic example models — tap to load and go • Draggable readouts on time-domain curves (live t / y display) • Numeric keyboard with a Done button; input parameters persist automatically • Simplified Chinese / English / German / Japanese, switchable in-app instantly PRO UPGRADE (one-time purchase) • Removes all ads • Unlocks IMC-Lambda / AMIGO tuning methods • Unlocks Nyquist plot, root locus and pole/stability analysis • Unlocks CSV data export Buy once, keep forever. Family Sharing supported. WHO IS IT FOR Control, electrical, mechatronics and process engineers, R&D and commissioning staff, students taking control-theory courses, and anyone who needs to quickly validate a control-system design. DISCLAIMER All results are provided for engineering reference only. Real-world system design and commissioning should combine field conditions with professional judgment. Have feedback or questions? Contact us from the Settings page.

Screenshots

DA40 M&B mobile4 screens
Control System Calc3 screens

Verdict

The call

The clearest difference is price: Control System Calc at Free against DA40 M&B mobile's $1.99. DA40 M&B mobile's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Control System Calc is free to download; DA40 M&B mobile costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DA40 M&B mobile ships an update every 3 months, Control System Calc every 2 months. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.

Scorecard2 real differences Ā· 4 level
DA40 M&B mobile versus Control System Calc: the parameters behind the verdict, then further details
ParameterDA40 M&B mobileControl System Calc
Price$1.99Free — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS16.6 — better17.0
Further details — not scored
Size8 MB9 MB
Age rating4+4+
DeveloperPedro Isidoroę“‹ 刘

In-app purchases

None

DA40 M&B mobile

No in-app purchases

None

Control System Calc

No in-app purchases

Questions

Is DA40 M&B mobile free?
DA40 M&B mobile costs $1.99, with no in-app purchases.
Is Control System Calc free?
Control System Calc is free to download, with no in-app purchases.
Do DA40 M&B mobile or Control System Calc have ads?
Control System Calc shows ads; DA40 M&B mobile does not.
Which is updated more often, DA40 M&B mobile or Control System Calc?
DA40 M&B mobile ships an update every 3 months, and Control System Calc every 2 months. Most recently, DA40 M&B mobile was updated on October 10, 2026 and Control System Calc on October 20, 2026.

Other comparisons