Comparison

PDFForge vs ChessLock

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

Head to head
About

PDFForge

Transform your iPhone into a comprehensive document management tool. Easily scan, edit, sign, and extract text from PDFs with advanced OCR capabilities. Sync your work across devices seamlessly.

Highlights
  • High-quality document scanning
  • Bulk scanning for multiple pages
  • Full PDF editing toolkit
  • Advanced OCR text recognition
  • Digital signature insertion
  • iCloud cross-device syncing
Read full description

PDFForge – All-in-One PDF Scanner & Editor Turn your iPhone into a complete document hub with PDFForge — the ultimate tool to scan, edit, sign, and extract text from PDFs quickly and securely. Scan Smarter: High-Quality Scans – Capture sharp, clear documents with smart edge detection. Bulk Scanning – Scan multiple pages in one go — perfect for notes, receipts, or multi-page PDFs. Edit Like a Pro: Full Editing Toolkit – Reorder, rotate, duplicate, or delete pages effortlessly. Import Anything – Add pages from other PDFs, your device, or scan new pages instantly. Annotations & Signatures – Highlight, underline, strike through, add text, or insert your signature. Powerful OCR Text Recognition: Smart OCR Engine – Instantly convert scanned pages into editable, searchable text. Saved OCR Results – Copy, share, or review previous text extractions from your organized history. Sync Across Devices: iCloud Integration – All documents and edits stay synced and accessible across all your Apple devices. Whether you're a student, professional, or just going paperless, PDFForge gives you everything you need to manage PDFs — all in one sleek, fast app. Start free with 3 scans, 3 edits, and 3 OCR uses. Unlock unlimited access with a one-time purchase — no subscriptions, no recurring fees.

About

ChessLock

This app helps you control screen time by blocking distracting applications. To take a break, you must solve chess puzzles, sharpening your mind and earning your pause. It's designed for anyone seeking enhanced focus and productivity with a unique, brain-boosting approach.

Highlights
  • Block distracting apps
  • Solve chess puzzles for breaks
  • Customizable focus sessions
  • Brain-training puzzles
  • Private by design, no data collection
  • Pro version for advanced features
Features
Read full description

Take control of your screen time like never before—with your brain as the key! Screen Time Control: ChessLock is a powerful focus tool that blocks distracting apps… and makes you earn your breaks by solving chess puzzles. Designed for those who want real productivity with a fun twist, ChessLock combines proven focus techniques with the timeless game of chess to help you stay in control. - How it works: Create a Focus Session Select the apps you want to block. Once it starts, you're locked in—no cheating allowed! Pause With Purpose Want a break? Solve a chess puzzle to unlock it. No puzzle, no pause. Train Your Brain Each puzzle challenge helps keep your mind sharp and focused. - Unlock More with ChessLock Pro Unlimited focus sessions Choose your puzzle difficulty Smarter, stronger app blocking Earn meaningful breaks More brain-boosting control - Why Chess? Chess is the perfect game to sharpen concentration, improve problem-solving, and help reset your brain during focused work. It’s not just screen time management — it’s brain time empowerment. - Private by Design No accounts, no personal data collection, no creepy tracking. Your preferences are stored locally, and analytics are completely anonymous. You stay in control. - Built for Everyone Whether you’re a student, freelancer, parent, or pro, ChessLock gives you a mindful, brain-powered way to manage your screen time. Download Screen Time Control: ChessLock and make every pause a power move.

Screenshots

PDFForge4 screens
ChessLock4 screens

Verdict

The call

The clearest difference is review sentiment: PDFForge at 86% against ChessLock's 67%. PDFForge also leads on rating (5.0 vs 4.8). ChessLock's advantage is device support (3 vs 1). On price, ratings volume, update cadence and ads 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. PDFForge sells 4 in-app purchases, starting at $2.99 per month and ChessLock sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDFForge holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 8 and 4 respectively. Written reviews point the same way: 86% of PDFForge's written reviews are positive against 67% of ChessLock's.

UpkeepUpdate frequency

PDFForge ships an update every 2 weeks, ChessLock fortnightly. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
PDFForge versus ChessLock: the parameters behind the verdict, then further details
ParameterPDFForgeChessLock
PriceFreeFree
Rating5.0 (8 ratings) — better4.8 (4 ratings)
Positive reviews85.7% of reviews — better66.7% of reviews
Number of ratings8 — better4
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS1717.0
Further details — not scored
Size5 MB50 MB
Age rating4+4+
DeveloperMefjuDev LLCPatricio Guzman

Customer experience

PDFForge

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive85.7%
Neutral14.3%
Negative0.0%

ChessLock

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

4 purchases

PDFForge

Subscriptions3
  • Monthly3 Days trial$2.991 Month
  • 3 Months$7.993 Months
  • Yearly$24.991 Year
One-time1
  • PDFForge Pro$0.99
5 purchases

ChessLock

Subscriptions3
  • Chesslock Pro2 variants$2.991 Month
  • Chesslock Pro$19.991 Year
  • Chesslock Pro$29.991 Year
One-time2
  • Chesslock Pro$17.49
  • Chesslock Pro$34.99

Questions

Is PDFForge free?
PDFForge is free to download, with in-app purchases available.
Is ChessLock free?
ChessLock is free to download, with in-app purchases available.
Which has better reviews, PDFForge or ChessLock?
PDFForge is rated higher. PDFForge averages 5.0 out of 5 from 8 ratings, while ChessLock averages 4.8 from 4 ratings.
Do PDFForge or ChessLock have ads?
Neither PDFForge nor ChessLock shows ads.
Which is updated more often, PDFForge or ChessLock?
PDFForge ships an update every 2 weeks, and ChessLock fortnightly. Most recently, PDFForge was updated on September 24, 2026 and ChessLock on October 12, 2026.

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