# Cluster AI vs Nebula AI

The clearest difference is update cadence: Cluster AI at every 2 days against Nebula AI's monthly. Cluster AI also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 86%). Nebula AI's advantage is ratings volume (19 vs 6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Cluster AI sells 2 in-app purchases, starting at $19.99 per month and Nebula AI sells 6 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Cluster AI holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 19 respectively. Written reviews point the same way: 100% of Cluster AI's written reviews are positive against 86% of Nebula AI's.

Cluster AI ships an update every 2 days, Nebula AI monthly. Both last shipped on November 5, 2026.

## The numbers

| Metric | Cluster AI | Nebula AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/cluster-ai-ask-work-build/id6743643266/reviews)** | [4.8 (19 ratings)](https://appshunter.io/ios/app/nebula-ai/id6757687588/reviews) |
| Number of ratings | 6 | **19** |
| Positive reviews | **100.0% of reviews** | 85.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | Freemium | Free with in-app purchases |
| Size | 135 MB | 107 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Clusterbase](https://appshunter.io/developer/1803745705) | [Agent Labs, Inc.](https://appshunter.io/developer/6797892998) |

## What reviewers say

### Cluster AI

[App page](https://appshunter.io/ios/app/cluster-ai-ask-work-build/id6743643266)

This AI-powered search engine provides direct, trustworthy answers with cited sources. Get clear, concise information backed by real-time web searches, without any advertisements or clutter.

**Highlights:** AI-powered answers with cited sources, Real-time web search, Save and organize chat history, Ad-free experience, Direct and concise responses

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $19.99 | per month |
| Max Monthly | $199.99 | per month |


### Nebula AI

[App page](https://appshunter.io/ios/app/nebula-ai/id6757687588)

Automate tasks like email, coding, and scheduling with a team of specialized AI agents. Connect to your existing tools and receive actionable results, not just suggestions. This AI works around the clock to handle your workflows from a single chat interface.

**Highlights:** Automate email, code, data analysis, and scheduling, Connects to over 600 tools via OAuth, Unified chat interface for AI agents, Specialized AI agents perform actions, Customizable agents and recurring automations, Secure OAuth connections, no password storage

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nebula Basic Plan | $5.99 | per month |
| Nebula Individual Plan | $29.99 | per month |
| 10 Nebula Credits | $12.99 | one-time |
| 25 Nebula Credits | $29.99 | one-time |
| 50 Nebula Credits | $59.99 | one-time |
| 100 Nebula Credits | $119.99 | one-time |


## Frequently asked questions

### Is Cluster AI free?

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

### Is Nebula AI free?

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

### Which has better reviews, Cluster AI or Nebula AI?

Cluster AI is rated higher. Cluster AI averages 5.0 out of 5 from 6 ratings, while Nebula AI averages 4.8 from 19 ratings.

### Do Cluster AI or Nebula AI have ads?

Neither Cluster AI nor Nebula AI shows ads.

### Which is updated more often, Cluster AI or Nebula AI?

Cluster AI ships an update every 2 days, and Nebula AI monthly. Most recently, Cluster AI was updated on November 5, 2026 and Nebula AI 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.*