# Reeder. vs Principal AI

The clearest difference is rating: Principal AI at 5.0 against Reeder.'s 4.3. Principal AI also leads on in-app purchases (none vs 2) and iOS requirement (15.1 vs 17.0). Reeder.'s advantage is ratings volume (907 vs 3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Reeder. sells 2 in-app purchases, starting at $1.99 per month. Principal AI asks for nothing beyond the download.

Principal AI holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Reeder. has 907 ratings behind it against 3, so its average is the more settled of the two.

Reeder. ships an update every 2 weeks, Principal AI every 4 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Reeder. | Principal AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (907 ratings)](https://appshunter.io/ios/app/reeder/id6475002485/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/principal-ai/id6761268899/reviews)** |
| Number of ratings | **907** | 3 |
| Positive reviews | 53.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Monetization | Freemium | **Free** |
| Size | 30 MB | 44 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Silvio Rizzi](https://appshunter.io/developer/325502382) | [Fernando Ramirez](https://appshunter.io/developer/1846460167) |

## What reviewers say

### Reeder.

[App page](https://appshunter.io/ios/app/reeder/id6475002485)

Consolidate your reading, watching, and listening into a single, unified timeline. Syncs seamlessly across devices and allows for easy sharing of curated content. Organize links and create custom views with powerful filters.

**Highlights:** Unified content timeline, Cross-device syncing, Shared public feeds, Customizable filters, Save and organize links, iCloud sync

**Features:** Family Sharing, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $14.99 | per year |

**What reviewers like**

- 🚀 Fantastic app
- 👍 Beautiful reading experience
- 🚀 Seamless sync across devices
- 💡 Innovative all-in-one concept
- 👍 Sleek and polished UI

**What reviewers complain about**

- 🐛 Lacking read/unread indicators
- 🐛 Inconsistent video/audio playback
- 🐛 Cluttered feed with replies
- 🐛 Difficult to navigate and organize feeds
- 🐛 Limited customization options

**Reported bugs**

- Feeds failing to import or sync correctly
- Inconsistent timeline ordering and display
- Podcast and video playback issues
- Crashes and stability problems

**Requested features**

- Add read/unread status indicators
- Improve feed organization with folders
- Provide more customization options for layout and typography
- Integrate with third-party RSS services
- Introduce keyboard shortcuts for common actions


### Principal AI

[App page](https://appshunter.io/ios/app/principal-ai/id6761268899)

Visualize GitHub activity with a unique 2D representation of your repository's structure. Track commits, view file changes, and explore project history in an engaging, visual format. Designed for developers who appreciate code as an art form.

**Highlights:** Live Activity Feed, File City visualization, Commit details, Commit timeline, Pull-to-refresh, Swipe navigation

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

**In-app purchases:** none


## Frequently asked questions

### Is Reeder. free?

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

### Is Principal AI free?

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

### Which has better reviews, Reeder. or Principal AI?

Principal AI is rated higher. Reeder. averages 4.3 out of 5 from 907 ratings, while Principal AI averages 5.0 from 3 ratings.

### Do Reeder. or Principal AI have ads?

Neither Reeder. nor Principal AI shows ads.

### Which is updated more often, Reeder. or Principal AI?

Reeder. ships an update every 2 weeks, and Principal AI every 4 weeks. Most recently, Reeder. was updated on November 4, 2026 and Principal AI on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*