Comparison

ai chat by api vs DocuMind

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ai chat by api

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
Read full description

AI Chat by API – Use ChatGPT Plus Without a Monthly Subscription! Description Want to use ChatGPT Plus but don’t want to commit to a monthly subscription? If you only need ChatGPT for occasional use, our app allows you to access ChatGPT through OpenAI’s API – easily, cost-effectively, and without needing any coding skills. With AI Chat by API, users bring their own OpenAI API key and only pay for the API usage directly with OpenAI, saving money and offering unparalleled flexibility. The app does not process any payments or provide API keys – you control everything securely through OpenAI. Key Features Use Your Own OpenAI API Key: Access ChatGPT by entering your API key. Pay as You Go: No need to commit to monthly subscriptions – you only pay OpenAI for what you use. File Text Extraction: Extract text from PDFs and .TXT files, perfect for generating ChatGPT prompts. Seamless ChatGPT Interface: Enjoy an intuitive and clean design to enhance your ChatGPT experience. Copy and Reuse: Easily copy extracted or generated text with one tap. About API Keys and Payments Users must obtain an API key directly from OpenAI's platform. This ensures they have full control over their usage and spending. The app connects to OpenAI’s ChatGPT API, a paid service managed and billed by OpenAI. Payments for API usage are made directly to OpenAI using their supported payment methods. The app does not handle payments or provide external payment links. How It Works: Obtain your OpenAI API key directly from OpenAI’s platform. Add your API key in the app. Start chatting with ChatGPT or extract text from files to use as input for the chatbot. Control costs directly through OpenAI's pay-as-you-go model. Why Choose AI Chat by API? Save money by avoiding monthly subscriptions. Extract and use text directly from files to streamline your prompts. Enjoy full control over your API usage and spending. Download AI Chat by API now and experience the power of ChatGPT in a more flexible and cost-effective way! ******************** AI Chat by API – Use ChatGPT Plus Without a Monthly Subscription! Want to use ChatGPT Plus but don’t want to commit to a monthly subscription? If you only need ChatGPT for occasional use, our app allows you to access ChatGPT through OpenAI’s API – easily, cost-effectively, and without needing any coding skills.

About

DocuMind

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
Read full description

Stop scrolling through documents to find answers. With DocuMind, you can ask a question and instantly get clear, accurate answers from your files, right on your device. No internet. No accounts. No data leaving your phone. Completely on-device for full privacy. CAPTURE EVERYTHING Bring all your information into one place: • Import PDFs, text files (.txt, .md), CSV, and JSON • Add photos, screenshots, and images • Scan paper documents, receipts, and book pages with the built-in scanner • Read charts and tables with Vision Analysis, now or later Everything becomes searchable and ready to chat with. GET INSTANT ANSWERS Understand your documents faster: • Ask anything: “Summarize this”, “What’s the key idea?”, “When is the deadline?” • Get answers based only on your documents • Find both exact terms and deeper meaning • Continue conversations or branch into new questions No more skimming. Just answers. SEE EXACTLY WHERE ANSWERS COME FROM Never guess or hallucinate: • Tap citations [1] to jump to the exact page and highlighted text • Instantly verify every answer • See which parts of your documents were used • On iPhone Duo, fold it halfway to read the cited page beside your chat Built for trust and transparency. ORGANIZE YOUR WORK Keep everything structured and easy to navigate: • Workspaces to group related documents • Pin important files and chats • Clean, predictable library with no duplicates • Send a workspace to your iPhone, iPad, or Mac, ready to chat on arrival PRIVACY FIRST Your data stays yours: • 100% offline, works without internet • No accounts, no tracking, no cloud • Your files never leave your device • Get Pro once, or subscribe monthly or yearly PERFECT FOR • Students: summarize readings and understand papers • Professionals: analyze contracts, reports, and notes • Researchers: extract insights from large documents • Private & Confidential Files: safely analyze medical records, financial statements, legal documents, and sensitive information, without anything leaving your device • Everyday use: receipts, forms, and personal files Turn your files into a private, intelligent knowledge base you can talk to. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ai chat by api4 screens
DocuMind4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

Scorecard4 real differences · 6 level
ai chat by api versus DocuMind: the parameters behind the verdict, then further details
Parameterai chat by apiDocuMind
Price$1.99Free — better
Rating5.0 (1 ratings)5.0 (7 ratings)
Positive reviews—100.0% of reviews
Number of ratings17 — better
Update frequency—Every 10 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS18.118.0 — better
Further details — not scored
Size3 MB48 MB
Age rating4+9+
DeveloperINGOAMPTCore Arc Studio LLC

In-app purchases

None

ai chat by api

No in-app purchases

3 purchases

DocuMind

Subscriptions2
  • DocuMind Pro Monthly$2.991 Month
  • DocuMind Pro Annual$19.991 Year
One-time1
  • DocuMind Pro$9.99

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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