# TT vs Atmosfer

The clearest difference is iOS requirement: TT at 12.1 against Atmosfer's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

TT ships an update every 2 weeks, Atmosfer every 9 days. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | TT | Atmosfer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Size | 23 MB | 47 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Arneca Teknoloji LTD. STI.](https://appshunter.io/developer/441710230) | [Turkcell Iletisim Hizmetleri A.S.](https://appshunter.io/developer/305642482) |

## What reviewers say

### TT

[App page](https://appshunter.io/ios/app/tt-map/id1579318979)

**In-app purchases:** none


### Atmosfer

[App page](https://appshunter.io/ios/app/atmosfer/id1593384553)

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

**In-app purchases:** none


## Frequently asked questions

### Is TT free?

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

### Is Atmosfer free?

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

### Do TT or Atmosfer have ads?

Neither TT nor Atmosfer shows ads.

### Which is updated more often, TT or Atmosfer?

TT ships an update every 2 weeks, and Atmosfer every 9 days. Most recently, TT was updated on September 17, 2026 and Atmosfer 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.*