# Optimus AI vs AI Agent Builder

The clearest difference is price: Optimus AI at Free against AI Agent Builder's $2.99. AI Agent Builder's advantage is in-app purchases (none vs 5) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Optimus AI is free to download; AI Agent Builder costs $2.99 up front. Optimus AI sells 5 one-off in-app purchases. AI Agent Builder asks for nothing beyond the download.

Optimus AI ships an update every 3 months, AI Agent Builder every 10 days. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Optimus AI | AI Agent Builder |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/optimus-ai/id1462763998/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 6 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mohammad Masri](https://appshunter.io/developer/975614455) | [Yuhsiu Lai](https://appshunter.io/developer/433114647) |

## What reviewers say

### Optimus AI

[App page](https://appshunter.io/ios/app/optimus-ai/id1462763998)

This app offers advanced AI-powered conversations and image generation. It allows users to send messages via SMS and WhatsApp without needing to add contacts, enhancing communication and creativity.

**Highlights:** OpenAI-powered chatbot, Image-generation AI integration, Natural conversation capabilities, Intelligent responses, Send SMS/WhatsApp without contacts

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Credits for direct messages | $14.99 | one-time |
| 10 Credits for direct messages | $29.99 | one-time |
| 20 Credits for direct messages | $59.99 | one-time |
| 40 Credits for direct messages | $115.99 | one-time |
| Hundred Credits | $269.99 | one-time |


### AI Agent Builder

[App page](https://appshunter.io/ios/app/ai-agent-builder-create-agent/id6762403953)

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

**In-app purchases:** none


## Frequently asked questions

### Is Optimus AI free?

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

### Is AI Agent Builder free?

AI Agent Builder costs $2.99, with no in-app purchases.

### Do Optimus AI or AI Agent Builder have ads?

Optimus AI shows ads; AI Agent Builder does not.

### Which is updated more often, Optimus AI or AI Agent Builder?

Optimus AI ships an update every 3 months, and AI Agent Builder every 10 days. Most recently, Optimus AI was updated on October 20, 2026 and AI Agent Builder on October 19, 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.*