# Lumi AI vs Eris.

The clearest difference is rating: Lumi AI at 4.2 against Eris.'s 3.4. On price, ratings volume, update cadence and ads there is nothing between them.

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

Lumi AI holds the better App Store score, 4.2 against 3.4. Both are backed by a comparable volume of ratings — 5 and 10 respectively.

Lumi AI ships an update every 3 weeks, Eris. every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Lumi AI | Eris. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/lumi-ai/id6746665068/reviews)** | [3.4 (10 ratings)](https://appshunter.io/ios/app/eris/id6747496749/reviews) |
| Number of ratings | 5 | **10** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 2.5 GB | 34 MB |
| Requires iOS | 18.4 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Matt Krussow](https://appshunter.io/developer/1816335194) | [Ignacio Palacio](https://appshunter.io/developer/1773333920) |

## What reviewers say

### Lumi AI

[App page](https://appshunter.io/ios/app/lumi-ai/id6746665068)

This AI companion operates entirely on your device, ensuring privacy and offline functionality. Customize its personality and engage in conversations, even sharing documents and photos for deeper understanding. It's designed for personal use and runs on powerful hardware.

**Highlights:** On-device AI companion, Offline chat functionality, Customizable AI personality, Voice mode conversations, Photo and document sharing, Runs on Gemma 4

**Features:** macOS Compatibility

**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 Lumi AI free?

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

### Is Eris. free?

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

### Which has better reviews, Lumi AI or Eris.?

Lumi AI is rated higher. Lumi AI averages 4.2 out of 5 from 5 ratings, while Eris. averages 3.4 from 10 ratings.

### Do Lumi AI or Eris. have ads?

Neither Lumi AI nor Eris. shows ads.

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

Lumi AI ships an update every 3 weeks, and Eris. every 2 weeks. Most recently, Lumi AI was updated on October 24, 2026 and Eris. on October 24, 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.*