# Claude by Anthropic vs Hydrographic Survey

The clearest difference is chart position: Claude by Anthropic at #2 against Hydrographic Survey's unranked. Hydrographic Survey's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Claude by Anthropic sells 10 in-app purchases, starting at $20.00 per month and Hydrographic Survey sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Claude by Anthropic | Hydrographic Survey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (295K ratings)](https://appshunter.io/ios/app/claude-by-anthropic/id6473753684/reviews)** | — |
| Number of ratings | **295K** | — |
| Positive reviews | 51.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#2** | — |
| Size | 182 MB | 31 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Anthropic PBC](https://appshunter.io/developer/1719695350) | [Gerard Rampal](https://appshunter.io/developer/6780474851) |

## What reviewers say

### Claude by Anthropic

[App page](https://appshunter.io/ios/app/claude-by-anthropic/id6473753684)

**Currently charting:** #2 Top Grossing · Productivity, #3 Top Free · Productivity, #8 Top Grossing, #9 Top Free (US App Store)

This AI assistant helps you write, research, code, and solve complex problems. It refines your writing, debugs code, analyzes visual data, and provides insights from your connected documents. Think out loud with voice dictation for hands-free brainstorming and problem-solving.

**Highlights:** AI writing and content refinement, Coding assistance and debugging, Web research with citations, Visual analysis of images and PDFs, Voice dictation for hands-free use, Integration with Google Drive, Gmail, Calendar

**Features:** iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Claude Pro - Monthly | $20.00 | per month |
| Claude Max - Monthly | $124.99 | per month |
| Claude Pro - Annual | $214.99 | per year |
| Claude Ultra - Monthly | $249.99 | per month |
| Usage Credits (20) | $20.00 | one-time |
| Usage Credits (50) | $45.00 | one-time |
| Usage Credits (100) | $90.00 | one-time |
| Usage Credits (250) | $200.00 | one-time |
| Usage Credits (500) | $350.00 | one-time |
| Usage Credits (1000) | $700.00 | one-time |

**What reviewers like**

- 🚀 Powerful and versatile AI assistant
- 👍 Intuitive and easy to use interface
- 💡 Innovative features like 'Projects'
- 🤖 Intelligent and thoughtful responses
- 📚 Comprehensive knowledge base

**What reviewers complain about**

- 🔒 Concerns about privacy and data usage
- 🚫 Limitations on free usage and throttling
- 🐛 Occasional bugs and crashes
- 🙅‍♀️ Overly restrictive content policies
- 🤖 Lack of true conversational abilities

**Reported bugs**

- Login and account issues
- Inconsistent performance on mobile devices
- Formatting and display problems

**Requested features**

- Voice input and output capabilities
- Improved integration with other platforms
- Expanded knowledge base and faster updates
- More customization and personalization options
- Enhanced memory and context retention


### 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 Claude by Anthropic free?

Claude by Anthropic is free to download, with in-app purchases available.

### Is Hydrographic Survey free?

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

### Do Claude by Anthropic or Hydrographic Survey have ads?

Neither Claude by Anthropic 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.*