# Private AI vs Bubble Mail

The clearest difference is price: Bubble Mail at Free against Private AI's $4.99. Bubble Mail also leads on iOS requirement (18.0 vs 26.0). Private AI's advantage is in-app purchases (none vs 5). On ads and device support there is nothing between them.

Bubble Mail is free to download; Private AI costs $4.99 up front. Bubble Mail sells 5 in-app purchases, starting at $2.99 per month. Private AI asks for nothing beyond the download.

## The numbers

| Metric | Private AI | Bubble Mail |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/private-ai-document-chat/id6757301317/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Paid | — |
| Size | 6 MB | 12 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | +12 | 4+ |
| Developer | [GTechnologies LLC](https://appshunter.io/developer/1813624050) | [ETHAN PEAL](https://appshunter.io/developer/6793362224) |

## What reviewers say

### Private AI

[App page](https://appshunter.io/ios/app/private-ai-document-chat/id6757301317)

This AI assistant operates entirely offline on your device, ensuring 100% data privacy. It allows you to chat with your documents using specialized AI experts and custom prompts, without any internet connection or data uploads.

**Highlights:** 100% private and offline operation, Chat with PDFs, code, spreadsheets, and more, 25 specialized AI experts and custom prompts, No subscriptions or in-app purchases, Leverages Apple Intelligence models, Zero tracking and zero data uploads

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

**In-app purchases:** none


### Bubble Mail

[App page](https://appshunter.io/ios/app/bubble-mail-email-as-chat/id6794871173)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble Plus Monthly | $2.99 | per month |
| Bubble Plus Annual | $24.99 | per year |
| Playful Theme Pack | $9.99 | one-time |
| Founding Supporter | $14.99 | one-time |
| Bubble Plus Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Private AI free?

Private AI costs $4.99, with no in-app purchases.

### Is Bubble Mail free?

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

### Do Private AI or Bubble Mail have ads?

Neither Private AI nor Bubble Mail 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.*