# Private AI vs Foundation

The clearest difference is price: Foundation at Free against Private AI's $4.99. Private AI's advantage is rating (3.5 vs 1.0) and update cadence (every 2 days vs every 4 weeks). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Foundation is free to download; Private AI costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Private AI holds the better App Store score, 3.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Private AI ships an update every 2 days, Foundation every 4 weeks. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Private AI | Foundation |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/private-ai-document-chat/id6757301317/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/foundation-chat/id6757838092/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 weeks |
| Monetization | Paid | **Free** |
| Size | 6 MB | 8 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +12 | 4+ |
| Developer | [GTechnologies LLC](https://appshunter.io/developer/1813624050) | [Sagar Desai](https://appshunter.io/developer/1825946798) |

## 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


### Foundation

[App page](https://appshunter.io/ios/app/foundation-chat/id6757838092)

Engage in intelligent, private AI conversations that run entirely on your device. No internet or data collection required, offering instant responses and multiple conversation threads for various tasks.

**Highlights:** 100% on-device AI processing, Zero data collection, Works offline, Multiple conversation threads, Clean SwiftUI interface, Unlimited chat sessions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Private AI free?

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

### Is Foundation free?

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

### Which has better reviews, Private AI or Foundation?

Private AI is rated higher. Private AI averages 3.5 out of 5 from 2 ratings, while Foundation averages 1.0 from 1 ratings.

### Do Private AI or Foundation have ads?

Neither Private AI nor Foundation shows ads.

### Which is updated more often, Private AI or Foundation?

Private AI ships an update every 2 days, and Foundation every 4 weeks. Most recently, Private AI was updated on October 6, 2026 and Foundation on October 16, 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.*