# Explore ZEISS vs ChatMBTI

The clearest difference is in-app purchases: Explore ZEISS at none against ChatMBTI's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ChatMBTI sells 3 in-app purchases, starting at $2.99 per 7 days. Explore ZEISS asks for nothing beyond the download.

Explore ZEISS ships an update every 4 months, ChatMBTI every 2 months. The most recent releases landed on September 18, 2026 and July 28, 2026 respectively.

## The numbers

| Metric | Explore ZEISS | ChatMBTI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 258 MB | 51 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carl Zeiss AG](https://appshunter.io/developer/488066215) | [Mohammad Hisham](https://appshunter.io/developer/1835033943) |

## What reviewers say

### Explore ZEISS

[App page](https://appshunter.io/ios/app/explore-zeiss/id6753989361)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChatMBTI

[App page](https://appshunter.io/ios/app/chatmbti/id6757331968)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatMBTI Pro | $2.99 | per 7 days |
| ChatMBTI Pro | $9.99 | per month |
| ChatMBTI Pro | $49.99 | per year |


## Frequently asked questions

### Is Explore ZEISS free?

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

### Is ChatMBTI free?

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

### Do Explore ZEISS or ChatMBTI have ads?

Neither Explore ZEISS nor ChatMBTI shows ads.

### Which is updated more often, Explore ZEISS or ChatMBTI?

Explore ZEISS ships an update every 4 months, and ChatMBTI every 2 months. Most recently, Explore ZEISS was updated on September 18, 2026 and ChatMBTI on July 28, 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.*