Comparison

Lock Notes vs Document Signer

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 a personal notebook for your thoughts, diary entries, ideas and everyday lists. Lock Notes gives your writing its own space, with a passcode and supported biometric unlock to control access. WRITE THE WAY YOU THINK Give long notes structure with headings, bold and italic text, lists and checklists. Add photos directly into your writing, keep a simple journal, or capture an idea before it slips away. FIND WHAT MATTERS Search your notes and find text inside an open note. Automatic saving keeps your edits as you write and when you leave the editor. A clean layout keeps the focus on your text. TAKE YOUR WRITING WITH YOU Export notes as TXT or formatted PDF, share the notes you choose, and print a copy. Use exports for a personal archive, a draft to continue elsewhere, or a list to share. RECOVER AN ACCIDENTAL DELETION Recently Deleted keeps removed notes for up to 30 days, so you can restore one before it is permanently deleted. CHOOSE HOW YOU WORK Write with local storage, adjust the appearance, and use a light or dark interface. Optional cloud synchronization is available with Premium and a compatible cloud account. From a short memo to a longer personal journal, keep your writing easy to find and comfortable to read. - Privacy Policy: https://lykovstudio.io/privacy - Terms of Use: https://lykovstudio.io/terms

About

Document Signer

Easily sign PDFs, fill forms, and manage scanned documents. This app offers a free e-signature feature and a camera scanner. Upgrade to Pro for advanced editing tools, templates, and cloud syncing.

Highlights
  • Electronic document signing
  • PDF and image file signing
  • Camera scanner for documents
  • Document editing tools
  • Ready-to-use templates
  • Google Drive syncing
  • Local storage for privacy
Features
Read full description

Introducing SimpleSign, your ultimate assistant for electronically signing and managing documents with ease. Whether you need to sign a PDF, fill out forms, or organize scanned documents, SimpleSign offers a comprehensive solution designed to streamline your workflow. Effortless Document Signing and Editing SimpleSign simplifies the process of signing documents electronically. With a user-friendly interface and intuitive design, you can sign PDFs and image files seamlessly. Utilize the free e-signature feature to sign documents quickly and securely. For full access to premium tools, templates, and advanced editing features, an upgrade to SimpleSign Pro is available. Versatile Editing Tools Enhance your documents with multiple editing tools available in SimpleSign. Customize texts, import images, add checkboxes, and insert initials wherever necessary. Some advanced editing features require a Pro subscription. Comprehensive Document Management Manage your documents effectively with SimpleSign’s integrated features. Use the free camera scanner to capture physical documents and convert them into digital files. Organize your documents within the app, making it easy to access and retrieve important information. Pro users can unlock additional tools for improved workflow efficiency. Ready-to-Use Templates Save time with SimpleSign’s extensive library of templates. Choose from over 15+ pre-designed templates for contracts, forms, and more. Some templates are available for free, while premium templates require a Pro subscription. Secure and Private Rest assured that your documents are secure with SimpleSign’s local storage feature. No account is required to start signing. Your documents remain on your device for maximum privacy. Integration and Google Drive Syncing With its brand new feature, SimpleSign can now backup all your scanned and signed documents with the connection of your Google account. It seamlessly integrates with your workflow giving you the ability to never loose your documents and easily recover them to a new phone! Upgrade to SimpleSign Pro Unlock premium features with a SimpleSign Pro subscription, including: - Access to all templates - Advanced editing tools - Unlimited document storage - Priority support - More customization options SimpleSign Pro offers a 3-day free trial for new users, followed by a paid subscription. Privacy Policy: https://sites.google.com/view/simplesign/privacy-policy Terms of Use: https://sites.google.com/view/simplesign/terms-conditions Support: zionstudiosapps@gmail.com All rights reserved, Zion Studios LLC, 2024

Screenshots

Lock Notes4 screens
Document Signer4 screens

Verdict

The call

The clearest difference is monetization model: Document Signer at freemium against Lock Notes's subscription. Document Signer also leads on review sentiment (75% vs 54%) and rating (4.7 vs 4.4). Lock Notes's advantage is ratings volume (138 vs 26). On price, update cadence, ads and in-app purchases 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 Document Signer sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Document Signer holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Lock Notes has 138 ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 54% of Lock Notes's written reviews are positive against 75% of Document Signer's.

UpkeepUpdate frequency

Lock Notes ships an update every 10 days, Document Signer every 9 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Lock Notes versus Document Signer: the parameters behind the verdict, then further details
ParameterLock NotesDocument Signer
PriceFreeFree
Rating4.4 (138 ratings)4.7 (26 ratings) — better
Positive reviews54.2% of reviews75.0% of reviews — better
Number of ratings138 — better26
Update frequencyEvery 10 daysEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size23 MB47 MB
Age rating4+4+
DeveloperLYKOV STUDIO LTDZion Studios LLC

Customer experience

Lock Notes

All ratings138 ratings
Positive83.3%
Neutral4.3%
Negative12.3%
Written reviews48 reviews
Positive54.2%
Neutral2.1%
Negative43.8%

Document Signer

All ratings26 ratings
Positive92.3%
Neutral3.8%
Negative3.8%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

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
4 purchases

Document Signer

Subscriptions3
  • Pro Weekly Subscription3 Days trial$4.997 Days
  • Pro Monthly Subscription3 Days trial$12.991 Month
  • Pro Yearly Subscription3 Days trial$59.991 Year
One-time1
  • Lifetime SimpleSign Offer$69.99

Questions

Is Lock Notes free?
Lock Notes is free to download, with in-app purchases available.
Is Document Signer free?
Document Signer is free to download, with in-app purchases available.
Which has better reviews, Lock Notes or Document Signer?
Document Signer is rated higher. Lock Notes averages 4.4 out of 5 from 138 ratings, while Document Signer averages 4.7 from 26 ratings.
Do Lock Notes or Document Signer have ads?
Neither Lock Notes nor Document Signer shows ads.
Which is updated more often, Lock Notes or Document Signer?
Lock Notes ships an update every 10 days, and Document Signer every 9 days. Most recently, Lock Notes was updated on October 29, 2026 and Document Signer on October 24, 2026.

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