# TopOpt 3D vs ODE

The clearest difference is ads: TopOpt 3D at none against ODE's shown. TopOpt 3D also leads on iOS requirement (11.0 vs 15.1). On price, update cadence, in-app purchases and device support there is nothing between them.

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

TopOpt 3D ships an update every 6 weeks, ODE every 5 weeks. The most recent releases landed on October 4, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | TopOpt 3D | ODE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/topopt-3d/id881472301/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 103 MB | 41 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DTU Mechanical Engineering](https://appshunter.io/developer/507453160) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### TopOpt 3D

[App page](https://appshunter.io/ios/app/topopt-3d/id881472301)

Perform 3D structural optimization using topology optimization on your iPad or iPhone. Adjust loads, supports, volume fractions, and grid sizes to observe design evolution. Experiment with different parameters to discover new minimums.

**Highlights:** 3D topology optimization, Adjustable loads and supports, Variable volume fractions, Experiment with grid sizes, Design evolution visualization

**Features:** macOS Compatibility

**In-app purchases:** none


### ODE

[App page](https://appshunter.io/ios/app/ode-solver-integrator/id1619296705)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TopOpt 3D free?

TopOpt 3D is free to download, with no in-app purchases.

### Is ODE free?

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

### Do TopOpt 3D or ODE have ads?

ODE shows ads; TopOpt 3D does not.

### Which is updated more often, TopOpt 3D or ODE?

TopOpt 3D ships an update every 6 weeks, and ODE every 5 weeks. Most recently, TopOpt 3D was updated on October 4, 2026 and ODE on October 12, 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.*