# Vector Space AI vs Molten

The clearest difference is price: Vector Space AI at Free against Molten's $2.99. Vector Space AI also leads on update cadence (every 4 days vs every 3 months) and iOS requirement (18.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Vector Space AI is free to download; Molten costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Vector Space AI ships an update every 4 days, Molten every 3 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Vector Space AI | Molten |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 months |
| Monetization | Free | — |
| Size | 34 MB | 18 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Voila Tech K.K](https://appshunter.io/developer/1769335627) | [OnDemandWorld (HK)](https://appshunter.io/developer/1195404946) |

## 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


### Molten

[App page](https://appshunter.io/ios/app/molten-local-ai-chat/id6758496039)

**Features:** Vision Pro support

**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 Molten free?

Molten costs $2.99, with no in-app purchases.

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

Neither Vector Space AI nor Molten shows ads.

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

Vector Space AI ships an update every 4 days, and Molten every 3 months. Most recently, Vector Space AI was updated on October 8, 2026 and Molten on October 9, 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.*