# addy.io extension vs SurfiAI Assistant

The clearest difference is in-app purchases: addy.io extension at none against SurfiAI Assistant's 2. addy.io extension also leads on ads (none vs shown) and device support (4 vs 2). SurfiAI Assistant's advantage is update cadence (every 6 days vs every 4 weeks). On price there is nothing between them.

Both are free to download. SurfiAI Assistant sells 2 in-app purchases, starting at $9.99 per month. addy.io extension asks for nothing beyond the download.

addy.io extension ships an update every 4 weeks, SurfiAI Assistant every 6 days. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | addy.io extension | SurfiAI Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/surfiai-assistant/id6781711368/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 7 MB | 26 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [addy.io](https://appshunter.io/developer/1758544549) | [GalaxyTranslate AI by ProInstallers](https://appshunter.io/developer/1815044319) |

## What reviewers say

### addy.io extension

[App page](https://appshunter.io/ios/app/addyio-extension/id6670220050)

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


### SurfiAI Assistant

[App page](https://appshunter.io/ios/app/surfiai-assistant/id6781711368)

This AI companion offers chat, coding assistance, and task automation on iPhone and iPad. It supports multiple AI models, allows users to bring their own API keys, and includes vision and voice capabilities for enhanced interaction. Enjoy private, on-device processing where available.

**Highlights:** AI chat for everyday tasks, Pair-programming code review, Web task automation agent, Bring Your Own Key (BYOK) for multiple AI models, Image analysis and OCR, Voice input with wake word, On-device inference with Apple Intelligence

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SurfiAI Pro | $9.99 | per month |
| SurfiAI Pro Annual | $79.99 | per year |


## Frequently asked questions

### Is addy.io extension free?

addy.io extension is free to download, with no in-app purchases.

### Is SurfiAI Assistant free?

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

### Do addy.io extension or SurfiAI Assistant have ads?

SurfiAI Assistant shows ads; addy.io extension does not.

### Which is updated more often, addy.io extension or SurfiAI Assistant?

addy.io extension ships an update every 4 weeks, and SurfiAI Assistant every 6 days. Most recently, addy.io extension was updated on October 7, 2026 and SurfiAI Assistant on October 15, 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.*