Comparison

AI PDF Reader vs Viewer3D

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

Head to head
About

AI PDF Reader

Features
Read full description

AI PDF Reader: Edit & Scan is a versatile mobile app that allows you to read, edit, and scan PDF documents directly from your device without needing a computer. With built-in AI-powered tools, you can seamlessly scan any physical document, edit PDF files on the go, and convert documents into Word, text, or image formats. The AI PDF Reader app also features an AI reading assistant that opens documents in an interactive mode, allowing you to ask questions and get instant answers based on the document's content. AI PDF Reader : Edit & Scan app also offers advanced tools to customize your documents. You can sign PDFs or other documents using a handwritten signature or import a signature from your photo album. The PDF reader also offers better document clarity and communication. The annotation tools let you highlight, underline, strikethrough, add text, or use a pen for freehand markup. AI chat support is also integrated, enabling users to ask queries and get real-time help within the app. AI PDF Reader: Edit & Scan brings smart, efficient document management to your fingertips. Save all your edited documents into the app folder and use them as per your convenience. Features: Read, edit, and scan PDF documents directly from your device. Scan physical documents easily with AI Scan tools. Convert documents into Word, text, or image formats. Use the AI reading assistant to ask questions about your documents. Sign PDFs with a handwritten signature or import one from your gallery. Annotate documents with highlight, underline, strikethrough, text, or pen tools. Chat with AI to get help and answers to your queries. Save all edited documents in the app folder for easy access. To find out more about automatic subscription renewals: Ad-free version Unlimited of pdf generation Premium Subscription : Reader One Week - 6.99 USD Reader One Year - 44.99 USD Your payment will be charged to your iTunes Account.The app offering is auto-renewable subscriptions For More Information : Privacy Policy : http://hktechnoapps.com/pages/Privacy%20Policy.html Terms of Use : http://hktechnoapps.com/pages/Terms%20Of%20Use.html

About

Viewer3D

Features
Read full description

Powerful 3D Visualization. Absolute Privacy. Viewer3D is a high-performance, fully offline tool engineered for professionals, designers, and 3D printing enthusiasts. View, inspect, and interact with your models instantly—without cloud uploads or data privacy concerns. Why Choose Viewer3D? 100% Offline & Secure: Your intellectual property never leaves your device. No internet required, no tracking, and zero data collection. Zero Storage Overhead: Using advanced in-place file access, Viewer3D opens models directly without creating redundant copies, saving your device’s storage. Industry-Grade 3MF Support: Fully compatible with multi-color models and plate layouts from popular 3D printing slicers. Immersive AR Experience: Bring your designs into the real world. Visualize models in your physical environment with high-precision Augmented Reality. Key Features: Multi-Color 3MF Management: Seamlessly render multi-part 3MF files. Customize filament colors directly within the app to preview your final print. Intuitive Gesture Control: Optimized spatial navigation with fluid two-finger panning and pinch-to-zoom for precise inspection. Seamless Integration: Open 3D models instantly via the "Share" menu from Files, Mail, or any other app. Supported Formats: Comprehensive support for STL, PLY, OBJ, 3MF, STEP, and 3DM. What’s Next? (Our Roadmap): We are constantly evolving! Upcoming features include: • Enhanced STEP Support: Read and manage individual parts/assemblies. • Professional Tools: Section views, Material settings, and Exploded views. Support & Feature Requests: apple@everver.com

Screenshots

AI PDF Reader4 screens
Viewer3D4 screens

Verdict

The call

The clearest difference is price: AI PDF Reader at Free against Viewer3D's $0.99. Viewer3D's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

AI PDF Reader is free to download; Viewer3D costs $0.99 up front. AI PDF Reader sells 2 in-app purchases, starting at $6.99 per 7 days. Viewer3D asks for nothing beyond the download.

UpkeepUpdate frequency

AI PDF Reader ships an update every 16 months, Viewer3D every 3 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 2 level
AI PDF Reader versus Viewer3D: the parameters behind the verdict, then further details
ParameterAI PDF ReaderViewer3D
PriceFree — better$0.99
Update frequencyEvery 16 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size61 MB24 MB
Age rating4+4+
DeveloperHK TECHNOSOFT北京秤鑫科技有限公司

In-app purchases

2 purchases

AI PDF Reader

Subscriptions2
  • Reader One Week$6.997 Days
  • Reader One Year$44.991 Year
None

Viewer3D

No in-app purchases

Questions

Is AI PDF Reader free?
AI PDF Reader is free to download, with in-app purchases available.
Is Viewer3D free?
Viewer3D costs $0.99, with no in-app purchases.
Do AI PDF Reader or Viewer3D have ads?
AI PDF Reader shows ads; Viewer3D does not.
Which is updated more often, AI PDF Reader or Viewer3D?
AI PDF Reader ships an update every 16 months, and Viewer3D every 3 months. Most recently, AI PDF Reader was updated on October 13, 2026 and Viewer3D on October 2, 2026.

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