# TCAD app vs Optoelectronics

The clearest difference is in-app purchases: TCAD app at none against Optoelectronics's 6. TCAD app also leads on update cadence (monthly vs every 3 months) and iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Optoelectronics sells 6 in-app purchases, starting at $9.99 per month. TCAD app asks for nothing beyond the download.

TCAD app ships an update monthly, Optoelectronics every 3 months. The most recent releases landed on October 3, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | TCAD app | Optoelectronics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 143 MB | 24 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DEVSIM LLC](https://appshunter.io/developer/1703126059) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### TCAD app

[App page](https://appshunter.io/ios/app/tcad-app/id6462515028)

**In-app purchases:** none


### Optoelectronics

[App page](https://appshunter.io/ios/app/optoelectronics/id6739937611)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


## Frequently asked questions

### Is TCAD app free?

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

### Is Optoelectronics free?

Optoelectronics is free to download, with in-app purchases available.

### Do TCAD app or Optoelectronics have ads?

Neither TCAD app nor Optoelectronics shows ads.

### Which is updated more often, TCAD app or Optoelectronics?

TCAD app ships an update monthly, and Optoelectronics every 3 months. Most recently, TCAD app was updated on October 3, 2026 and Optoelectronics on September 24, 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.*