# CastLab vs Mad Thinker, Inc

The clearest difference is in-app purchases: Mad Thinker, Inc at none against CastLab's 5. Mad Thinker, Inc also leads on ads (none vs shown). CastLab's advantage is device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. CastLab sells 5 one-off in-app purchases. Mad Thinker, Inc asks for nothing beyond the download.

## The numbers

| Metric | CastLab | Mad Thinker, Inc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mad-thinker-inc/id6762204521/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | — | Weekly |
| Monetization | — | Free |
| Size | 140 MB | 98 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CastLab](https://appshunter.io/developer/1867624256) | [Mad Thinker, Inc](https://appshunter.io/developer/1843907037) |

## What reviewers say

### CastLab

[App page](https://appshunter.io/ios/app/castlab/id6757564143)

**Features:** Apple Wallet

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Course | $9.99 | one-time |
| Premium Course | $19.99 | one-time |
| Premium Course | $29.99 | one-time |
| Premium Course | $49.99 | one-time |
| Premium Course | $79.99 | one-time |


### Mad Thinker, Inc

[App page](https://appshunter.io/ios/app/mad-thinker-inc/id6762204521)

This app transforms fishing trips into valuable fisheries data. It uses AI to identify species, estimate length, and log environmental conditions from photos, creating research-grade records. Beyond catches, it also documents wildlife, habitat, and water quality for a comprehensive view of fisheries.

**Highlights:** AI-verified catch records, Species and length estimation, Geotagged and timestamped data, Offline functionality, Wildlife and habitat logging, Tides, weather, and moon data

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

**In-app purchases:** none


## Frequently asked questions

### Is CastLab free?

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

### Is Mad Thinker, Inc free?

Mad Thinker, Inc is free to download, with no in-app purchases.

### Do CastLab or Mad Thinker, Inc have ads?

CastLab shows ads; Mad Thinker, Inc does not.

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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.*