# 15min Change Timer vs GPT Realtime Assistant

The clearest difference is in-app purchases: 15min Change Timer at none against GPT Realtime Assistant's 3. 15min Change Timer also leads on iOS requirement (17.0 vs 26.0). GPT Realtime Assistant's advantage is device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. GPT Realtime Assistant sells 3 in-app purchases, starting at $9.99 per month. 15min Change Timer asks for nothing beyond the download.

## The numbers

| Metric | 15min Change Timer | GPT Realtime Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 months |
| Size | 1 MB | 63 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Muranaka](https://appshunter.io/developer/1882707973) | [Arte Soft Ltd](https://appshunter.io/developer/1750513209) |

## What reviewers say

### 15min Change Timer

[App page](https://appshunter.io/ios/app/15min-change-timer/id6760115037)

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

**In-app purchases:** none


### GPT Realtime Assistant

[App page](https://appshunter.io/ios/app/gpt-realtime-assistant/id6770536523)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly GPT Assistant | $9.99 | per month |
| 1000 Credits | $4.99 | one-time |
| 5000 Credits | $19.99 | one-time |


## Frequently asked questions

### Is 15min Change Timer free?

15min Change Timer is free to download, with no in-app purchases.

### Is GPT Realtime Assistant free?

GPT Realtime Assistant is free to download, with in-app purchases available.

### Do 15min Change Timer or GPT Realtime Assistant have ads?

Neither 15min Change Timer nor GPT Realtime Assistant shows ads.

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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.*