# AppFlowy vs Hydrographic Survey

The clearest difference is in-app purchases: AppFlowy at none against Hydrographic Survey's 2. Hydrographic Survey's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price and ads there is nothing between them.

Both are free to download. Hydrographic Survey sells 2 in-app purchases, starting at $4.99 per month. AppFlowy asks for nothing beyond the download.

## The numbers

| Metric | AppFlowy | Hydrographic Survey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (32 ratings)](https://appshunter.io/ios/app/appflowy/id6457261352/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free | — |
| Size | 208 MB | 31 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AppFlowy](https://appshunter.io/developer/1700854074) | [Gerard Rampal](https://appshunter.io/developer/6780474851) |

## What reviewers say

### AppFlowy

[App page](https://appshunter.io/ios/app/appflowy/id6457261352)

This AI-powered workspace centralizes tasks, notes, and projects with flexible data visualization. Collaborate with teams, leverage AI for content generation and insights, and enjoy offline access and self-hosting for data control.

**Highlights:** AI-powered content generation and insights, Organize data in tables, Kanban, and calendars, Create rich documents with 20+ content types, Team collaboration and knowledge base, Offline support and self-hosting options, Cross-device synchronization

**Features:** macOS Compatibility

**In-app purchases:** none


### Hydrographic Survey

[App page](https://appshunter.io/ios/app/hydrographic-survey/id6780474489)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $49.99 | per year |


## Frequently asked questions

### Is AppFlowy free?

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

### Is Hydrographic Survey free?

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

### Do AppFlowy or Hydrographic Survey have ads?

Neither AppFlowy nor Hydrographic Survey shows ads.

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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.*