# TopOpt vs Depit App

The clearest difference is update cadence: TopOpt at every 3 months against Depit App's every 17 months. TopOpt also leads on device support (3 vs 1). Depit App's advantage is iOS requirement (9.0 vs 11.0). On price, ads and in-app purchases there is nothing between them.

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

TopOpt ships an update every 3 months, Depit App every 17 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | TopOpt | Depit App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/topopt/id507454646/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 17 months |
| Monetization | Free | — |
| Size | 100 MB | 23 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [DTU Mechanical Engineering](https://appshunter.io/developer/507453160) | [infoFactory srl](https://appshunter.io/developer/469907339) |

## What reviewers say

### TopOpt

[App page](https://appshunter.io/ios/app/topopt/id507454646)

This app allows users to perform structural optimization using topology optimization methods on their iPad or iPhone. Users can manipulate loads and supports to observe design evolution and experiment with various parameters like volume fractions and grid sizes.

**Highlights:** Topology optimization method, Structural design evolution, Load and support manipulation, Volume fraction experimentation, Grid size adjustments

**Features:** macOS Compatibility

**In-app purchases:** none


### Depit App

[App page](https://appshunter.io/ios/app/depit-app/id1441640534)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TopOpt free?

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

### Is Depit App free?

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

### Do TopOpt or Depit App have ads?

Neither TopOpt nor Depit App shows ads.

### Which is updated more often, TopOpt or Depit App?

TopOpt ships an update every 3 months, and Depit App every 17 months. Most recently, TopOpt was updated on September 18, 2026 and Depit App on September 17, 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.*