# IOL TrueCast vs 3D

The clearest difference is in-app purchases: IOL TrueCast at none against 3D's 3. IOL TrueCast also leads on update cadence (monthly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 3D sells 3 in-app purchases, starting at $19.99 per 7 days. IOL TrueCast asks for nothing beyond the download.

IOL TrueCast ships an update monthly, 3D every 2 months. The most recent releases landed on September 14, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | IOL TrueCast | 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 33 MB | 45 MB |
| Requires iOS | 17.6 | **17.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [International Orthotic Labs](https://appshunter.io/developer/1648962475) | [Sidekick Interactive, Inc.](https://appshunter.io/developer/490552471) |

## What reviewers say

### IOL TrueCast

[App page](https://appshunter.io/ios/app/iol-truecast/id6466312903)

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

**In-app purchases:** none


### 3D

[App page](https://appshunter.io/ios/app/3d-sidekick/id6739503140)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $19.99 | per 7 days |
| Monthly Plan | $49.99 | per month |
| Annual Plan | $499.99 | per year |


## Frequently asked questions

### Is IOL TrueCast free?

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

### Is 3D free?

3D is free to download, with in-app purchases available.

### Do IOL TrueCast or 3D have ads?

Neither IOL TrueCast nor 3D shows ads.

### Which is updated more often, IOL TrueCast or 3D?

IOL TrueCast ships an update monthly, and 3D every 2 months. Most recently, IOL TrueCast was updated on September 14, 2026 and 3D on September 23, 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.*