Comparison

Airfoil Design vs Graph Notes

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

Head to head
About

Airfoil Design

This application allows users to design and analyze aircraft wing sections using advanced numeric methods and CFD simulations. It offers tools for creating custom airfoil geometries, real-time aerodynamic analysis, and importing existing designs.

Highlights
  • NACA airfoil generation
  • Real-time aerodynamic analysis
  • Airfoil import from database
  • Custom mesh generation
  • CFD simulation engine
  • Streamlines and CP vector visualization
Features
Read full description

Airfoil Design is the ultimate tool for designing and analyzing aircraft wing sections. With advanced numeric methods, custom mesh generation, and real-time aerodynamic analysis, you can create and refine complex airfoil geometries with precision. Our CFD simulation engine accurately solves Euler's equations, providing insights into compressible, non-viscous flows, including shockwave formations. Key Features: - Design Flexibility: Generate and customize airfoil geometries with 4 types: NACA 4-digit, NACA 5-digit, Modified NACA 4-digit, and Modified NACA 5-digit airfoils. - Real-Time Analysis: Adjust airfoil shapes using intuitive sliders and instantly see the impact on aerodynamic coefficients. - Airfoil Import: Easily import existing airfoils from the airfoiltools.com database. - Custom Mesh Generation: Create o-type grid meshes with our built-in generator and export them for use in other applications. - Advanced CFD Simulation: Simulate airflow around your designs with our powerful CFD engine, now featuring touch pan/zoom, streamlines, CP vectors, and second-order solver. Visualize results with the new Coolwarm color map and export them as PDFs. Whether you’re a professional aerospace engineer or a student of aerodynamics, Airfoil Design offers the tools you need to innovate and explore. Download now to start your aerodynamic journey on your iPad or iPhone. Note: The app is continuously being improved, with new features and bug fixes on the way.

About

Graph Notes

Features
Read full description

Graph Notes – Visual Notes Graph Notes – Visual Notes helps you organize your thoughts, ideas, and knowledge using a powerful graph-based note system. Instead of traditional lists, create visual notes with nodes and connections to better understand relationships between ideas. Build mind maps, knowledge graphs, project plans, or learning maps with an interactive drag-and-drop interface. Whether you are a student, developer, researcher, or creator, Graph Notes makes brainstorming and organizing information easier and more visual. Key Features • Visual Node Editor – Create notes as nodes and connect them with edges • Drag & Drop Interface – Easily move and arrange notes on the canvas • Graph View Organization – Understand relationships between ideas instantly • Mind Map Style Notes – Perfect for brainstorming and planning • Zoom & Pan Canvas – Navigate large note graphs smoothly • Simple & Clean UI – Focus on your ideas without distractions • Fast & Lightweight – Designed for performance and simplicity Perfect For • Brainstorming ideas • Mind mapping • Knowledge management • Study notes • Project planning • Visual thinking Stop using boring linear notes. Start building connected knowledge with Graph Notes. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bugblitz98.github.io/GraphNotes/privacy.html

Screenshots

Airfoil Design4 screens
Graph Notes4 screens

Verdict

The call

The clearest difference is ads: Airfoil Design at none against Graph Notes's shown. Airfoil Design also leads on update cadence (every 10 days vs every 6 weeks). On price, in-app purchases, device support and iOS requirement 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

Airfoil Design ships an update every 10 days, Graph Notes every 6 weeks. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
Airfoil Design versus Graph Notes: the parameters behind the verdict, then further details
ParameterAirfoil DesignGraph Notes
PriceFreeFree
Rating3.9 (17 ratings) — better—
Positive reviews62.5% of reviews—
Number of ratings17 — better—
Update frequencyEvery 10 days — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size122 MB34 MB
Age rating4+4+
DeveloperCharles Bilodeau-BerubeAnimesh Manna

In-app purchases

None

Airfoil Design

No in-app purchases

None

Graph Notes

No in-app purchases

Questions

Is Airfoil Design free?
Airfoil Design is free to download, with no in-app purchases.
Is Graph Notes free?
Graph Notes is free to download, with no in-app purchases.
Do Airfoil Design or Graph Notes have ads?
Graph Notes shows ads; Airfoil Design does not.
Which is updated more often, Airfoil Design or Graph Notes?
Airfoil Design ships an update every 10 days, and Graph Notes every 6 weeks. Most recently, Airfoil Design was updated on September 30, 2026 and Graph Notes on October 3, 2026.

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