# MyCosmopolis vs B12

The clearest difference is update cadence: B12 at every 2 months against MyCosmopolis's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

MyCosmopolis ships an update every 3 months, B12 every 2 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | MyCosmopolis | B12 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 63 MB | 39 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [REALTYNNO REAL ESTATE SOLUTIONS SRL](https://appshunter.io/developer/1837665629) | [cSquare Software Development S.R.L.](https://appshunter.io/developer/6774038723) |

## What reviewers say

### MyCosmopolis

[App page](https://appshunter.io/ios/app/mycosmopolis/id6751951476)

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

**In-app purchases:** none


### B12

[App page](https://appshunter.io/ios/app/b12/id6779669882)

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

**In-app purchases:** none


## Frequently asked questions

### Is MyCosmopolis free?

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

### Is B12 free?

B12 is free to download, with no in-app purchases.

### Do MyCosmopolis or B12 have ads?

Neither MyCosmopolis nor B12 shows ads.

### Which is updated more often, MyCosmopolis or B12?

MyCosmopolis ships an update every 3 months, and B12 every 2 months. Most recently, MyCosmopolis was updated on October 25, 2026 and B12 on October 25, 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.*