# Vector Space AI vs Eris.

The clearest difference is update cadence: Vector Space AI at every 4 days against Eris.'s every 2 weeks. Vector Space AI also leads on review sentiment (100% vs 80%). 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, Eris. every 2 weeks. The most recent releases landed on September 7, 2026 and July 4, 2026 respectively.

## The numbers

| Metric | Vector Space AI | Eris. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/eris/id6747496749/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 34 MB | 34 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Voila Tech K.K](https://appshunter.io/developer/1769335627) | [Ignacio Palacio](https://appshunter.io/developer/1773333920) |

## 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


### Eris.

[App page](https://appshunter.io/ios/app/eris/id6747496749)

Experience private AI conversations entirely on your device. This app offers offline access to multiple AI models, ensuring your data never leaves your iPhone or iPad. Enjoy fast, secure AI assistance without internet connectivity or subscriptions.

**Highlights:** 100% Private conversations, No internet required, Multiple AI models supported, Optimized for Apple Silicon, One-time download, use forever, Dark Mode support, Haptic feedback

**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 Eris. free?

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

### Do Vector Space AI or Eris. have ads?

Neither Vector Space AI nor Eris. shows ads.

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

Vector Space AI ships an update every 4 days, and Eris. every 2 weeks. Most recently, Vector Space AI was updated on September 7, 2026 and Eris. on July 4, 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.*