# Eris. vs Keepstack

The clearest difference is in-app purchases: Eris. at none against Keepstack's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Keepstack sells 2 in-app purchases, starting at $5.99 per month. Eris. asks for nothing beyond the download.

Eris. ships an update every 2 weeks, Keepstack every 3 weeks. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Eris. | Keepstack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/eris/id6747496749/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | — |
| Size | 34 MB | 5 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ignacio Palacio](https://appshunter.io/developer/1773333920) | [DUMITRU BUMBU](https://appshunter.io/developer/1868107712) |

## What reviewers say

### 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


### Keepstack

[App page](https://appshunter.io/ios/app/keepstack-save-links-and-notes/id6787906490)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Annual | $5.99 | per month |
| Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is Eris. free?

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

### Is Keepstack free?

Keepstack is free to download, with in-app purchases available.

### Do Eris. or Keepstack have ads?

Neither Eris. nor Keepstack shows ads.

### Which is updated more often, Eris. or Keepstack?

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