# ai chat by api vs DocuMind

The clearest difference is price: DocuMind at Free against ai chat by api's $1.99. DocuMind also leads on ratings volume (7 vs 1). ai chat by api's advantage is in-app purchases (none vs 3). On rating, ads, device support and iOS requirement there is nothing between them.

DocuMind is free to download; ai chat by api costs $1.99 up front. DocuMind sells 3 in-app purchases, starting at $2.99 per month. ai chat by api asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for ai chat by api against 5.0 for DocuMind. That said, the two scores are not equally well evidenced: DocuMind has 7 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | ai chat by api | DocuMind |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/ai-chat-by-api/id6739469873/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/documind-offline-pdf-ai-chat/id6760796072/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Monetization | Paid | **Free** |
| Size | 3 MB | 48 MB |
| Requires iOS | 18.1 | **18.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 9+ |
| Developer | [INGOAMPT](https://appshunter.io/developer/1704539480) | [Core Arc Studio LLC](https://appshunter.io/developer/1860672306) |

## What reviewers say

### ai chat by api

[App page](https://appshunter.io/ios/app/ai-chat-by-api/id6739469873)

Access ChatGPT Plus features without a monthly subscription by using your own OpenAI API key. Pay only for API usage directly with OpenAI for a flexible and cost-effective experience. Extract text from files to easily create prompts.

**Highlights:** Use your own OpenAI API key, Pay-as-you-go API usage, Extract text from PDF and TXT files, Seamless ChatGPT interface, Copy and reuse text easily

**Features:** macOS Compatibility

**In-app purchases:** none


### DocuMind

[App page](https://appshunter.io/ios/app/documind-offline-pdf-ai-chat/id6760796072)

Instantly get clear, accurate answers from your documents without internet. Import PDFs, text, images, and scan paper to create a searchable, private knowledge base. Verify answers with direct citations to the source text.

**Highlights:** 100% offline AI chat, Import PDFs, text, images, and scan documents, Instant, accurate answers from your files, Verify answers with citations, Organize documents into workspaces, Privacy-focused, no data leaves device

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DocuMind Pro Monthly | $2.99 | per month |
| DocuMind Pro Annual | $19.99 | per year |
| DocuMind Pro | $9.99 | one-time |


## Frequently asked questions

### Is ai chat by api free?

ai chat by api costs $1.99, with no in-app purchases.

### Is DocuMind free?

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

### Which has better reviews, ai chat by api or DocuMind?

ai chat by api and DocuMind are both rated 5.0 out of 5 on the App Store, from 1 and 7 ratings respectively.

### Do ai chat by api or DocuMind have ads?

Neither ai chat by api nor DocuMind 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.*