# Gliders by Design vs Pixel Wind Tunnel

The clearest difference is review sentiment: Gliders by Design at 100% against Pixel Wind Tunnel's 0%. Gliders by Design also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Pixel Wind Tunnel's advantage is price (Free vs $4.99) and update cadence (every 4 months vs every 30 months). On in-app purchases there is nothing between them.

Pixel Wind Tunnel is free to download; Gliders by Design costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gliders by Design ships an update every 30 months, Pixel Wind Tunnel every 4 months. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Gliders by Design | Pixel Wind Tunnel |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gliders-by-design/id1191116900/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Every 4 months** |
| Monetization | Paid | **Ad-supported** |
| Size | 31 MB | 21 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seeds Software](https://appshunter.io/developer/507836260) | [Hiroki Kijima](https://appshunter.io/developer/1326808571) |

## What reviewers say

### Gliders by Design

[App page](https://appshunter.io/ios/app/gliders-by-design/id1191116900)

Design and build your own handheld gliders using your iPad or Mac. This application provides authentic glider analyses and predictions, empowering users to learn about flight through hands-on creation. It's a rewarding way to explore aerodynamics and engineering principles.

**Highlights:** Handheld glider design, Authentic glider analysis, Flight predictions, Build and fly custom designs, STEM learning tool, School success

**Features:** macOS Compatibility

**In-app purchases:** none


### Pixel Wind Tunnel

[App page](https://appshunter.io/ios/app/pixel-wind-tunnel/id6760957754)

Simulate real fluid physics with computational fluid dynamics on your device. Draw any shape and explore single-phase flow, two-phase flow, combustion, and heat transfer in 2D or 3D.

**Highlights:** Real 2D/3D CFD simulations, Four simulation modes: single-phase, two-phase, combustion, heat transfer, Draw and simulate custom shapes, Visualize flow, temperature, and flames, Measure drag, lift, and Reynolds number, 3D viewing with orbit and zoom, Drawing tools with save/load functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Gliders by Design free?

Gliders by Design costs $4.99, with no in-app purchases.

### Is Pixel Wind Tunnel free?

Pixel Wind Tunnel is free to download, with no in-app purchases.

### Do Gliders by Design or Pixel Wind Tunnel have ads?

Pixel Wind Tunnel shows ads; Gliders by Design does not.

### Which is updated more often, Gliders by Design or Pixel Wind Tunnel?

Gliders by Design ships an update every 30 months, and Pixel Wind Tunnel every 4 months. Most recently, Gliders by Design was updated on November 2, 2026 and Pixel Wind Tunnel on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*