# Open MobileUI vs PileStack

The clearest difference is review sentiment: PileStack at 100% against Open MobileUI's 20%. PileStack also leads on rating (5.0 vs 3.8). Open MobileUI's advantage is in-app purchases (none vs 3) and ratings volume (34 vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PileStack sells 3 in-app purchases, starting at $1.99 per 7 days. Open MobileUI asks for nothing beyond the download.

PileStack holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Open MobileUI has 34 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 20% of Open MobileUI's written reviews are positive against 100% of PileStack's.

Open MobileUI ships an update weekly, PileStack every 4 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Open MobileUI | PileStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (34 ratings)](https://appshunter.io/ios/app/open-mobileui/id6754266176/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pilestack-link-saver/id6767052477/reviews)** |
| Number of ratings | **34** | 2 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Size | 64 MB | 14 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ronas IT OU](https://appshunter.io/developer/1155581652) | [Temuri Chitashvili](https://appshunter.io/developer/1895283893) |

## What reviewers say

### Open MobileUI

[App page](https://appshunter.io/ios/app/open-mobileui/id6754266176)

This native mobile client allows you to connect to your self-hosted AI models via Open WebUI. Chat with your AI, manage conversations, and utilize features like web search and image generation, all while maintaining control over your data with no ads.

**Highlights:** Connect to self-hosted AI models, Real-time streaming responses, Edit and regenerate AI responses, Attach photos, files, and web pages, Voice mode for hands-free interaction, Organize chats with folders and archives, Export and share conversations

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

**In-app purchases:** none


### PileStack

[App page](https://appshunter.io/ios/app/pilestack-link-saver/id6767052477)

Save articles, videos, recipes, and links from anywhere into a unified library. Organize your saved content with custom collections and easily find what you need. Get reminders for old saves to make your content useful.

**Highlights:** Save articles, videos, and links, Customizable collections, Drag-and-drop reordering, Search saved content, Mark items as read, Reminders for old saves, Syncs via iCloud

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PileStack Pro Weekly | $1.99 | per 7 days |
| PileStack Pro Monthly | $2.99 | per month |
| PileStack Pro Yearly | $17.99 | per year |


## Frequently asked questions

### Is Open MobileUI free?

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

### Is PileStack free?

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

### Which has better reviews, Open MobileUI or PileStack?

PileStack is rated higher. Open MobileUI averages 3.8 out of 5 from 34 ratings, while PileStack averages 5.0 from 2 ratings.

### Do Open MobileUI or PileStack have ads?

Neither Open MobileUI nor PileStack shows ads.

### Which is updated more often, Open MobileUI or PileStack?

Open MobileUI ships an update weekly, and PileStack every 4 days. Most recently, Open MobileUI was updated on November 9, 2026 and PileStack on November 5, 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.*