LumenDoc vs ChatPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LumenDoc
Transform your paperwork into a searchable digital library. Scan documents, extract key information with AI, and ask questions to find details instantly. Set reminders for important dates and track spending without linking bank accounts.
- Scan documents with AI Vision
- Ask questions about your documents
- Track spending from receipts
- Set reminders and calendar events
- Private iCloud backup (Pro)
- On-device OCR fallback
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LumenDoc turns receipts, bills, medical letters, warranties, contracts and everyday paperwork into a searchable document library. Scan a page, let AI Vision extract the details, track what you spend, and turn important dates into reminders or calendar events. WHY LUMENDOC SCAN PAPERWORK FAST Capture receipts, bills, IDs, school forms, appointments and important letters with your iPhone camera. LumenDoc extracts text, dates, amounts, vendors and document categories so your library is useful from the first scan. ASK YOUR DOCUMENTS Instead of digging through folders, ask questions like: - When is my appointment? - How much did I spend at Coles? - Where is the warranty for my appliance? LumenDoc answers from your own scanned documents and links back to the source. TRACK SPENDING FROM RECEIPTS AND BILLS Receipts, invoices, bills and fines can feed a spending dashboard automatically. See totals, merchants, categories and trends without connecting a bank account. REMINDERS AND CALENDAR INTEGRATION Turn due dates, appointments, renewals and expiries into reminders or calendar events so bills, warranties, appointments and important follow-ups do not get lost. DESIGNED FOR PRIVACY Your scanned page images stay on your device after AI Vision OCR. LumenDoc sends document images to Google Gemini through our private backend only when AI Vision is used for scanning. Library Ask sends relevant OCR text excerpts, not your page images. Your data is not used to train AI models. FREE AND PRO Free includes 5 lifetime AI Vision scans and 15 lifetime Library Ask questions. Free counters do not reset. LumenDoc Pro includes 100 AI Vision scans per subscription cycle, unlimited Library Ask, full spending history and private iCloud backup. After a Pro user's AI Vision quota is used, scanning continues with on-device OCR until the quota resets on the billing anniversary. Subscriptions are managed by Apple through the App Store. Cancel any time in iOS Settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lumendoc.net/privacy
ChatPDF
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Apple is quite strict about the "bait and switch" feeling. Even though you mentioned the subscription at the very bottom, their guidelines (specifically Guideline 3.1.1) require that if you list features in your description, it must be clear which ones require payment before the user hits the download button. The issue is likely that your "Key Features" section implies everything is free, and the "Unlock the full power" sentence at the end is too vague or feels like an afterthought. The Fix To pass review, you should add a "Pro/Premium" section or use asterisks to clearly denote paid features. Here is a revised version of your description designed to satisfy the App Store reviewers: Revised App Description Transform the way you read and interact with documents. Tired of scrolling through hundreds of pages? ChatPDF is your ultimate AI-powered companion that turns static documents into dynamic conversations. Whether you are a student, researcher, or professional, ChatPDF helps you extract insights, summarize complex data, and find answers in seconds. Key Features: Instant Interaction: Simply upload your file and start chatting. It’s like having a personal tutor or assistant for every document. Smart Summaries: Get concise, accurate summaries of long papers, contracts, or textbooks. Contextual Answers: Ask specific questions and receive answers based solely on the content of your PDF. Source Citation: Every answer includes references to the exact page, so you can verify the information. Subscription & Premium Features: ChatPDF offers a free version with daily limits. For power users, we offer a Premium Subscription that includes: Unlimited PDF Uploads: No caps on the number of documents you can analyze. Unlimited AI Chat: Continuous interaction without daily message limits. Priority Processing: Faster document analysis and response times. Note: Access to unlimited uploads and unlimited chat requires an active Premium subscription. Who is it for? Students: Ace your exams by summarizing lecture notes and textbooks. Researchers: Quickly scan through scientific papers and journals. Professionals: Analyze legal contracts, financial reports, and business proposals in record time. Stop reading and start chatting. Download ChatPDF today! Privacy Policy: https://insaneworks.space/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: ChatPDF at 15.6 against LumenDoc's 17.0. On price, ads, in-app purchases and device support 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
Both are free to download. LumenDoc sells 2 in-app purchases, starting at $4.99 per month and ChatPDF sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
| Parameter | LumenDoc | ChatPDF |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 7 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | David Mendez | Ikhwan Noorsetyo |
In-app purchases
LumenDoc
- LumenDoc Pro7 Days trial$4.991 Month
- LumenDoc Pro Yearly7 Days trial$39.991 Year
ChatPDF
- Weekly Subscription$0.997 Days
- Yearly Subscription$34.991 Year









