# GAIUS Pro vs tobook.link

The clearest difference is iOS requirement: GAIUS Pro at 11.0 against tobook.link's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GAIUS Pro ships an update every 2 weeks, tobook.link weekly. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | GAIUS Pro | tobook.link |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 60 MB | 123 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GAIUS AUTOMOTIVE INC.](https://appshunter.io/developer/1673661350) | [tobook.link s.r.o.](https://appshunter.io/developer/1649032672) |

## What reviewers say

### GAIUS Pro

[App page](https://appshunter.io/ios/app/gaius-pro/id1673661348)

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

**In-app purchases:** none


### tobook.link

[App page](https://appshunter.io/ios/app/tobooklink-booking-system/id6450151750)

Streamline your business operations with an intuitive online booking system. Easily manage appointments, integrate with your website and social media, and allow clients to book services effortlessly. Features include customizable design, calendar management, and team collaboration.

**Highlights:** Customizable booking page design, Website and Instagram integration, One-click booking link, Employee calendar management, Flexible scheduling options, Email confirmations and iCal export, Data export for reports and backups, Team collaboration and multi-branch management

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

**In-app purchases:** none


## Frequently asked questions

### Is GAIUS Pro free?

GAIUS Pro is free to download, with no in-app purchases.

### Is tobook.link free?

tobook.link is free to download, with no in-app purchases.

### Do GAIUS Pro or tobook.link have ads?

Neither GAIUS Pro nor tobook.link shows ads.

### Which is updated more often, GAIUS Pro or tobook.link?

GAIUS Pro ships an update every 2 weeks, and tobook.link weekly. Most recently, GAIUS Pro was updated on October 9, 2026 and tobook.link on October 2, 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.*