# Luminary AI vs Fabius

The clearest difference is in-app purchases: Luminary AI at none against Fabius's 3. Fabius's advantage is update cadence (every 9 days vs every 3 weeks) and iOS requirement (16.4 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Fabius sells 3 one-off in-app purchases. Luminary AI asks for nothing beyond the download.

Luminary AI ships an update every 3 weeks, Fabius every 9 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Luminary AI | Fabius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fabius/id6806862609/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 85 MB | 69 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Luminary AI](https://appshunter.io/developer/6774132461) | [Subhi Mukbel](https://appshunter.io/developer/6806046893) |

## What reviewers say

### Luminary AI

[App page](https://appshunter.io/ios/app/luminary-ai-explore-anything/id6774132456)

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

**In-app purchases:** none


### Fabius

[App page](https://appshunter.io/ios/app/fabius/id6806862609)

Design personalized AI agents with unique personalities, instructions, and tools. Upload documents and images to provide agents with specific knowledge for grounded answers. Collaborate with others in shared workspaces and connect to channels like Telegram.

**Highlights:** Custom AI agent design, Personalized agent personalities, Document and image knowledge integration, Team collaboration with roles, Telegram bot integration, Private by design, no tracking

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,400 Credits | $4.99 | one-time |
| 6,200 Credits | $19.99 | one-time |
| 17,000 Credits | $49.99 | one-time |


## Frequently asked questions

### Is Luminary AI free?

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

### Is Fabius free?

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

### Do Luminary AI or Fabius have ads?

Neither Luminary AI nor Fabius shows ads.

### Which is updated more often, Luminary AI or Fabius?

Luminary AI ships an update every 3 weeks, and Fabius every 9 days. Most recently, Luminary AI was updated on November 5, 2026 and Fabius on October 31, 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.*