# Sphere vs Arcus

The clearest difference is update cadence: Arcus at every 2 days against Sphere's every 3 weeks. Arcus also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Sphere sells 2 in-app purchases, starting at $7.99 per month and Arcus sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Sphere ships an update every 3 weeks, Arcus every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Sphere | Arcus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/arcus-ai-chatbot-and-agent/id6810542982/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 57 MB | 76 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Rajesh Cherukuri](https://appshunter.io/developer/6781198482) | [Rishab Aggarwal](https://appshunter.io/developer/6781765722) |

## What reviewers say

### Sphere

[App page](https://appshunter.io/ios/app/sphere-multi-model-ai-chat/id6781198480)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sphere Pro: Compare AI Models | $7.99 | per month |
| Sphere Pro: Multi AI Copilot | $54.99 | per year |


### Arcus

[App page](https://appshunter.io/ios/app/arcus-ai-chatbot-and-agent/id6810542982)

Access multiple advanced AI models like GPT, Claude, and Gemini in one place. Perform live web research, analyze documents, generate diagrams, and execute code. Offers privacy-focused features and a clean, ad-free interface.

**Highlights:** Access multiple AI models, Live web research with citations, Analyze PDF, Word, Excel, and code files, Generate diagrams and export to PDF, Execute code in a sandbox, Image analysis, Conversation memory

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Arcus Unlimited Monthly | $12.99 | per month |
| Arcus Unlimited Annual | $79.99 | per year |
| Arcus Unlimited Annual | $79.99 | per year |


## Frequently asked questions

### Is Sphere free?

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

### Is Arcus free?

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

### Do Sphere or Arcus have ads?

Neither Sphere nor Arcus shows ads.

### Which is updated more often, Sphere or Arcus?

Sphere ships an update every 3 weeks, and Arcus every 2 days. Most recently, Sphere was updated on October 31, 2026 and Arcus 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.*