Comparison

Lock Notes vs Documents & PDF Scanner

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

Head to head
About

Lock Notes

Securely store private thoughts, passwords, and reminders with biometric authentication. Enjoy a simple, elegant interface with iCloud sync, customizable themes, and backup options. Your data remains private and encrypted.

Highlights
  • Biometric authentication (Face ID, Touch ID)
  • Encrypted note storage
  • iCloud sync across devices
  • Customizable themes and dark mode
  • Backup and restore functionality
  • Ad-free minimalist interface
Features
Read full description

Keep your secrets safe. Secret Notes is the most secure and elegant way to store private thoughts, passwords, ideas, and personal reminders — all protected with Face ID, Touch ID, or a passcode. Why Secret Notes? • Secure your privacy Your notes are encrypted and protected with biometric authentication. Only you have access. • Simple and elegant No ads, no distractions. Just a beautiful, minimalist notepad with powerful features. • iCloud Sync Access your notes across all your iOS devices. Changes are synced automatically and securely. • Dark mode and themes Comfort for your eyes, day and night. Choose the style that fits your mood. • Backup and restore Never lose a note. Backup your data and restore it in seconds. Perfect for: • Personal journals • Sensitive work notes • Password hints • Private to-dos • Anything you want to keep hidden Your privacy is our priority. We don’t collect any personal data, and everything stays on your device or iCloud. Write freely. Store safely. Stay private. Information about the auto-renewable nature of the subscription - The price of the subscription is $1.99 per month or $9.99 per year. Every month/year your subscription is auto-renewed. - Subscription automatically renews if automatic renewal is not turned off at least 24 hours before the end of the current period - Charging for renewal of subscription takes place within 24 hours before the end of the current period. - After the end of the trial period, the monthly subscription will begin with the price accepted in your country - Update, manage and unsubscribe according to Apple's rules in your iTunes account settings - You can cancel your subscription via this URL​: https://support.apple.com/en-us/HT202039 - Privacy Policy: https://lykovstudio.io/privacy - Terms of Use: https://lykovstudio.io/terms

About

Documents & PDF Scanner

Scan, organize, and analyze your documents with AI. This app offers smart scanning, OCR text recognition, and an AI assistant to help you find information and take action on your files. Enjoy secure, encrypted storage and a 1-week free trial of premium features.

Highlights
  • Automatic document scanning
  • AI-powered OCR text recognition
  • Searchable PDF documents
  • AI assistant for summaries and questions
  • Secure iCloud sync
  • Auto-tagging and archiving
Features
Read full description

Scan a paper or share any document with Fyle, and it will be saved and analyzed so you can forget about it until you need it. These documents stay under your control, and no one but you can access them. That’s it. I hope it helps you as much as it helps me and the thousands of people who have started using Fyle recently. If you have ideas for features you’d like to see, or any other feedback, contact me through the app. I read every message. .
 ---- DMS - Document & File Manager. Your AI-powered all-in-one document solution & PDF scanner with automatic scanning, smart OCR text recognition, cloud sync, and a 1-week free trial! Scan. Understand. Retrieve. Manage contracts, invoices, receipts, and other documents quickly, securely, and with intelligent AI support. Try DMS - Document & File Manager now for a week at no cost and enjoy all the benefits of a modern, digital document storage solution! How it works: 1. Automatic Document Scanning Effortlessly scan your files with DMS - Document & File Manager's intelligent document detection. Perspective correction and color filters ensure crisp, high-quality PDF scans. 2. AI Analysis Thanks to OCR text recognition, your scanned documents are converted into fully searchable text. This text is then filtered against your personal blacklist and analyzed by artificial intelligence for categorization. 3. Ask Questions & Take Action Ask your AI assistant specific questions about contracts (“When can I cancel?”) or receipts (“What are my monthly expenses?”) and act immediately. Top Features: - Smart Scan Capture documents with automatic detection and categorize them instantly (e.g., taxes, insurance, receipts). - 1-Week Free Trial Experience all Premium features risk-free for seven days. - AI Assistant Automatically get summaries and key points, or ask your digital assistant specific questions about your documents. - Archiving Functions Keep track of all your paperwork. With automatic sorting, tagging, and AI analysis, you can effortlessly manage documents in one central system. - iCloud Sync End-to-end encrypted storage in your personal iCloud ensures maximum security. - Auto-Tagging The app automatically detects relevant keywords and sorts your documents, letting you find them within seconds. More Productivity with DMS - Document & File Manager 1. Searchable PDF Documents Save time locating important files thanks to precise OCR text recognition and keyword search. 2. Summaries & Key Insights Get an instant overview of your scans – the AI assistant extracts the most vital information. 3. Direct Interaction Query your documents directly instead of scrolling through pages and receive immediate, actionable answers. Privacy Protection Tailored to Your Needs Safeguard sensitive information with three levels of security: - No filtering for maximum functionality - Partial protection keeps your data on your devices without sending it to AI - Full protection filters confidential terms everywhere Create your personal blacklist and sync it via iCloud across all your devices. Try it free now! Start your 3-day free trial and discover all the benefits of AI-driven document storage. Automatically scan your files, save time with AI analysis, and find any document in seconds – all in one powerful digital archive. Additional Information - Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy Policy: https://www.manuelfessen.de/fyle/privacy Get DMS - Document & File Manager now and experience the smart combination of digital archiving, PDF scanning, OCR, and an AI assistant – all in one app!

Screenshots

Lock Notes4 screens
Documents & PDF Scanner4 screens

Verdict

The call

The clearest difference is monetization model: Documents & PDF Scanner at free with in-app purchases against Lock Notes's subscription. Documents & PDF Scanner also leads on review sentiment (70% vs 57%). Lock Notes's advantage is ads (none vs shown) and iOS requirement (15.0 vs 18.0). On price, rating, ratings volume and update cadence 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

Both are free to download. Lock Notes sells 7 in-app purchases, starting at $4.99 per 7 days and Documents & PDF Scanner sells 7 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Documents & PDF Scanner holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 137 and 63 respectively. Written reviews point the same way: 57% of Lock Notes's written reviews are positive against 70% of Documents & PDF Scanner's.

UpkeepUpdate frequency

Lock Notes ships an update every 10 days, Documents & PDF Scanner every 9 days. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

Scorecard4 real differences · 6 level
Lock Notes versus Documents & PDF Scanner: the parameters behind the verdict, then further details
ParameterLock NotesDocuments & PDF Scanner
PriceFreeFree
Rating4.4 (137 ratings)4.6 (63 ratings) — better
Positive reviews56.5% of reviews70.0% of reviews — better
Number of ratings137 — better63
Update frequencyEvery 10 daysEvery 9 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size15 MB75 MB
Age rating4+12+
DeveloperLYKOV STUDIO LTDManuel Fessen

Customer experience

Lock Notes

All ratings137 ratings
Positive83.2%
Neutral4.4%
Negative12.4%
Written reviews46 reviews
Positive56.5%
Neutral0.0%
Negative43.5%

Documents & PDF Scanner

All ratings63 ratings
Positive90.5%
Neutral3.2%
Negative6.3%
Written reviews10 reviews
Positive70.0%
Neutral0.0%
Negative30.0%

In-app purchases

7 purchases

Lock Notes

Subscriptions5
  • Weekly$4.997 Days
  • Weekly3 Days trial$4.997 Days
  • Monthly$7.991 Month
Show 2 more
  • Annual$29.991 Year
  • Annual3 Days trial$29.991 Year
One-time2
  • Disable ads$0.99
  • Lifetime$39.99
7 purchases

Documents & PDF Scanner

Subscriptions6
  • Pro$0.997 Days
  • Pro7 Days trial$1.997 Days
  • Pro$2.991 Month
Show 3 more
  • Pro7 Days trial$4.991 Month
  • Pro (Offer)$29.991 Year
  • Pro$39.991 Year
One-time1
  • Lifetime$89.99

Questions

Is Lock Notes free?
Lock Notes is free to download, with in-app purchases available.
Is Documents & PDF Scanner free?
Documents & PDF Scanner is free to download, with in-app purchases available.
Which has better reviews, Lock Notes or Documents & PDF Scanner?
Documents & PDF Scanner is rated higher. Lock Notes averages 4.4 out of 5 from 137 ratings, while Documents & PDF Scanner averages 4.6 from 63 ratings.
Do Lock Notes or Documents & PDF Scanner have ads?
Documents & PDF Scanner shows ads; Lock Notes does not.
Which is updated more often, Lock Notes or Documents & PDF Scanner?
Lock Notes ships an update every 10 days, and Documents & PDF Scanner every 9 days. Most recently, Lock Notes was updated on September 22, 2026 and Documents & PDF Scanner on September 19, 2026.

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