Comparison

PDF2MD vs DeepThink

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

Head to head
About

PDF2MD

Convert PDF files to Markdown format locally on your device. Share converted files and image assets easily. Handles PDFs of any size with a user-friendly interface.

Highlights
  • Offline PDF to Markdown conversion
  • No file size limits
  • Includes image assets folder
  • Easy sharing via AirDrop
  • User-friendly interface
  • Local data processing
Features
Read full description

Overview This app is a powerful tool for converting PDF files into Markdown format without requiring an internet connection. After conversion, only a single Markdown file is generated. Images embedded in the PDF will be processed and converted into text where possible; if no text can be recognized, they will not be displayed. Whether handling large or small PDFs, the app ensures smooth conversion, making it easier to manage and share your documents. Key Features - Offline Conversion: Convert PDF files to Markdown anytime, anywhere without the need for internet access. - No File Size Limits: Supports PDF files of any size, with no restrictions. - File Output: Generates a single Markdown file with a clear and structured format. - Easy Sharing: Quickly share the Markdown file via AirDrop or other commonly used apps. - User-Friendly: A simple and intuitive interface that makes file conversion and sharing effortless, even without technical expertise. This app is continuously being improved. It currently provides basic features such as extracting text from PDF files and sharing the results. If the PDF consists of images, the app will attempt to recognize text within those images; if recognition fails, the corresponding content will not be displayed. All operations are performed locally on your device, ensuring your data remains private and secure. Thank you for your understanding regarding any imperfections.

About

DeepThink

This AI assistant operates entirely on your device, offering private and unlimited conversations without needing an internet connection. It utilizes a self-reflection model for accurate reasoning and provides formatted output for easy use. Share with family for a secure, offline thinking partner.

Highlights
  • Complete privacy on-device processing
  • Offline functionality
  • Unlimited conversations
  • Markdown and LaTeX rendering
  • Full chat history
  • Family Sharing up to 6 members
  • AI self-reflection for thoughtful responses
Features
Read full description

Transform your device into a personal AI assistant that works completely offline. DeepThink runs entirely on your device, giving you unlimited conversations with absolute privacy – no internet required and we never transmit your messages anywhere. One purchase, unlimited access. No subscriptions, no accounts, no API keys needed. Share with up to six family members through Family Sharing. While we may transition to a subscription model in the future, anyone who purchases now will have lifetime access to the app at no additional cost. DeepThink is powered by DeepSeek R-1, a groundbreaking AI model distilled and optimized for mobile devices. R-1 represents a new generation of AI assistant that carefully performs internal self-reflection and reasoning before responding. Until recently, even leading AI services would generate answers without proper reasoning steps. This led to errors on seemingly simple questions like "Is 9.11 greater than 9.9" and "How many letter R's are in the word Strawberry". DeepThink, through R-1's methodical reasoning process, tackles these examples and much more with accuracy. Key Features: • Complete privacy – all processing happens on your device • Works offline – think with AI anywhere, anytime • Unlimited conversations – no usage limits or extra fees • Output has formatted Markdown and LaTeX rendering • Full chat history with conversation review and resume • Copy responses as rich text or Markdown • Family Sharing enabled – share with up to 6 family members • Thoughtful responses through AI self-reflection • Simple temperature controls to fine-tune responses • Advanced settings for power users While DeepThink may not beat online enterprise AI services for many uses, it excels at being your offline and private thinking partner. The rare occasions where it needs a reset are easily handled with the stop button or by adjusting temperature settings. Coming Soon to free updates: • Additional AI models • Faster performance • Editable context Like all AI systems, DeepThink may occasionally make mistakes. Users should verify important information and are responsible for how they use the AI's output. We believe in being transparent about both capabilities and limitations while delivering genuine value through private, offline AI assistance. We're passionate about making DeepThink better with each update. Your feedback and suggestions play a crucial role in shaping future versions – we read every comment and feature request. Join us in evolving DeepThink into an even more capable offline AI companion. Share your thoughts with us @3DTOPO on X (formally Twitter), through App Store reviews or support contact information. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Additional Terms of Use: Any user assumes full responsibility for any and all use of information provided by DeepThink. The app's AI-generated responses are provided "as is" without any warranties of accuracy or fitness for any particular purpose. Any user must independently verify any information provided by the app before relying on it.

Screenshots

PDF2MD4 screens
DeepThink4 screens

Verdict

The call

The clearest difference is rating: DeepThink at 3.0 against PDF2MD's 2.5. DeepThink also leads on update cadence (every 2 days vs every 8 days). PDF2MD's advantage is price ($1.99 vs $2.99) and iOS requirement (15.6 vs 18.0). On ratings volume, ads, in-app purchases and monetization model 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

PDF2MD costs $1.99 and DeepThink $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

DeepThink holds the better App Store score, 3.0 against 2.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

PDF2MD ships an update every 8 days, DeepThink every 2 days. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

Scorecard4 real differences · 6 level
PDF2MD versus DeepThink: the parameters behind the verdict, then further details
ParameterPDF2MDDeepThink
Price$1.99 — better$2.99
Rating2.5 (2 ratings)3.0 (2 ratings) — better
Positive reviews14.3% of reviews—
Number of ratings22
Update frequencyEvery 8 daysEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size13 MB21 MB
Age rating4++4
DeveloperYanbo Gao3DTOPO Inc.

Customer experience

PDF2MD

All ratings2 ratings
Positive0.0%
Neutral50.0%
Negative50.0%
Written reviews7 reviews
Positive14.3%
Neutral14.3%
Negative71.4%

DeepThink

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

PDF2MD

No in-app purchases

None

DeepThink

No in-app purchases

Questions

Is PDF2MD free?
PDF2MD costs $1.99, with no in-app purchases.
Is DeepThink free?
DeepThink costs $2.99, with no in-app purchases.
Which has better reviews, PDF2MD or DeepThink?
DeepThink is rated higher. PDF2MD averages 2.5 out of 5 from 2 ratings, while DeepThink averages 3.0 from 2 ratings.
Do PDF2MD or DeepThink have ads?
Neither PDF2MD nor DeepThink shows ads.
Which is updated more often, PDF2MD or DeepThink?
PDF2MD ships an update every 8 days, and DeepThink every 2 days. Most recently, PDF2MD was updated on September 30, 2026 and DeepThink on September 29, 2026.

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