# Vector Space AI vs Foundation

The clearest difference is review sentiment: Vector Space AI at 100% against Foundation's 0%. Vector Space AI also leads on update cadence (every 4 days vs every 4 weeks) and iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Vector Space AI ships an update every 4 days, Foundation every 4 weeks. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Vector Space AI | Foundation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/foundation-chat/id6757838092/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 4 weeks |
| Monetization | Free | Free |
| Size | 34 MB | 8 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Voila Tech K.K](https://appshunter.io/developer/1769335627) | [Sagar Desai](https://appshunter.io/developer/1825946798) |

## What reviewers say

### Vector Space AI

[App page](https://appshunter.io/ios/app/vector-space-ai/id6746352865)

This app offers a fast, private AI companion that runs locally on your device, providing instant responses for writing, brainstorming, and coding. It also allows seamless switching to cloud-based AI for more advanced queries.

**Highlights:** Runs locally on device, Optional ChatGPT API connection, Modern and clean interface, Instant response times, Complete user data privacy, Seamless mode switching

**Features:** Safari Extension

**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 Vector Space AI free?

Vector Space AI is free to download, with no in-app purchases.

### Is Foundation free?

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

### Do Vector Space AI or Foundation have ads?

Neither Vector Space AI nor Foundation shows ads.

### Which is updated more often, Vector Space AI or Foundation?

Vector Space AI ships an update every 4 days, and Foundation every 4 weeks. Most recently, Vector Space AI was updated on October 8, 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.*