Comparison

Study Guard vs PDF Tools

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

Head to head
About

Study Guard

This app transforms social media habits into a learning tool. It uses flashcard mastery to unlock social media access, ensuring focused study sessions. Create custom flashcards or generate them automatically from notes and PDFs.

Highlights
  • Social media leverage for motivation
  • Flashcard accountability for phone access
  • Custom flashcard creation
  • AI flashcard generator from notes/PDFs
  • Social media blocking during study
  • Progress tracking and insights
  • Unlimited flashcard sets
Features
Read full description

Study Guard – Turn Your Social Media Addiction into a Learning Powerhouse Never wait for study motivation again with Study Guard—the app that holds you accountable to mastering your flashcards. Transform your social media habits into an unexpected ally for academic success. SUBSCRIPTION REQUIRED - Study Guard requires a paid subscription to access all features after your free trial ends. WHAT YOU GET WITH YOUR SUBSCRIPTION: - Social Media Leverage Instead of letting endless scrolling derail your study sessions, Study Guard uses your social media habits as motivation. Each glance at your apps becomes a chance to earn time by proving your mastery of flashcards. - Accountability at Its Best Study Guard holds you directly accountable. Answer your flashcards correctly to unlock your phone and access social media, ensuring you stay committed to reviewing the material you worked hard to create. - Custom Flashcard Creation Use our intuitive interface to create custom flashcards manually. Spend hours preparing your content? With Study Guard, every flashcard counts. - AI Flashcard Generator Automatically generate flashcards from your notes and PDFs in 20+ languages. Save time and create comprehensive study materials effortlessly. - Focus-Driven Learning When it's time to study, distractions are minimized. The app temporarily blocks access to social media until you achieve your study goals, turning the habit that once hindered you into a powerful tool for concentration. - Progress Tracking & Insights Monitor your performance with detailed analytics. Track your success, identify areas for improvement, and stay motivated to keep pushing your boundaries. - Unlimited Flashcard Sets Create and manage as many flashcard decks as you need for all your subjects and learning goals. SUBSCRIPTION & FREE TRIAL: Study Guard requires a subscription to use. Start with a FREE TRIAL to experience all features at no cost. After your trial ends, a paid subscription is required to continue using the app. Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscription and turn off auto-renewal in your Account Settings after purchase. Download Study Guard now and let your passion for social media fuel your path to knowledge. Whether you're a student striving for excellence or a lifelong learner seeking to optimize your study routines, Study Guard integrates seamlessly into your lifestyle, making every moment count. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

PDF Tools

Features
Read full description

PDF Tools is the all-in-one PDF utility for iPhone and iPad — convert,merge, compress, protect, and extract content from your documents in just a few taps. No sign-up. No file uploads. Everything happens on your device. Whether you're a student handling assignments, a professional sending contracts, or anyone who deals with paperwork on the go, PDF Tools gives you a clean, fast, and reliable way to work with PDFs — without the bloat of desktop software. — WHAT YOU CAN DO — CONVERT • Image to PDF — Combine multiple JPG or PNG photos into a single PDF, with custom page size (A4, Letter, Legal, A3, A5), orientation, and layout (1 / 2 / 4 per page or grid). • PDF to Image — Extract every page (or selected pages) as high-quality JPG, PNG, or WebP at 72 / 150 / 300 / 600 DPI. • PDF to Zip — Bundle multiple PDFs into a single ZIP archive for easy sharing. • Text to PDF — Turn plain text notes into a clean, formatted PDF. • PDF to Text — Extract readable text from PDFs as .txt files (UTF-8, ASCII, ISO-8859-1, UTF-16). • Save Long Image — Stitch every page of a PDF into one tall, scrollable image for chat-friendly sharing. SECURE • Add Password — Protect any PDF with AES-128, AES-256, or RC4-128 encryption. • Remove Password — Unlock any PDF you own with a single tap. OPTIMIZE • Merge PDF — Combine multiple PDFs in any order. Sequential, interleaved, or reverse merge. • Compress PDF — Shrink large PDFs while preserving readable quality. Fast, balanced, and maximum compression levels. • Page Adjustment — Rotate, reorder, crop, and delete pages with a smooth, tactile editor. — BUILT FOR iPHONE & iPAD — • 100% on-device processing — your files never leave your phone. • Designed for iOS with native SwiftUI: smooth gestures, haptics, and dark mode. • Works offline. Use it on a flight, on the subway, anywhere. • Files App, iCloud Drive, and Photos library support. • Share results directly to Mail, Messages, Drive, or any app. — PDF TOOLS PRO — Unlock the full suite with Pro: • Unlimited conversions, merges, and compressions • Remove all ads • Priority access to new tools as they launch — PRIVACY FIRST — We don't upload your files. We don't read your documents. All processing happens locally using Apple's PDFKit framework. No account is required. — SUPPORT — Questions, feature requests, or a tool you wish existed? Email us — we read every message. Terms of Use: https://sites.google.com/view/pdf-tools-all-in-one-editor/terms-conditions Privacy Policy: https://sites.google.com/view/pdf-tools-all-in-one-editor/privacy-policy https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Study Guard4 screens
PDF Tools4 screens

Verdict

The call

Study Guard and PDF Tools are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Study Guard sells 6 in-app purchases, starting at $4.99 per 7 days and PDF Tools sells 4 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Study Guard versus PDF Tools: the parameters behind the verdict, then further details
ParameterStudy GuardPDF Tools
PriceFreeFree
Rating4.6 (347 ratings) — better—
Positive reviews28.1% of reviews—
Number of ratings347 — better—
Update frequencyEvery 2 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.4 — better18.0
Further details — not scored
Size59 MB13 MB
Age rating4+4+
DeveloperJason MayoHarsh Kanani

In-app purchases

6 purchases

Study Guard

Subscriptions5
  • Study Guard (Weekly)$4.997 Days
  • Study Guard Plus$5.991 Month
  • Pro Plan (Yearly)$19.991 Year
Show 2 more
  • Study Guard Plus Yearly3 Days trial$24.991 Year
  • Study Guard (Yearly)$34.991 Year
One-time1
  • Study Guard (Lifetime)$79.99
4 purchases

PDF Tools

Subscriptions2
  • PDFTools Monthly$7.991 Month
  • PDFTools Yearly$14.991 Year
One-time2
  • PDFTools Gift$12.99
  • PDFTools Lifetime$17.99

Questions

Is Study Guard free?
Study Guard is free to download, with in-app purchases available.
Is PDF Tools free?
PDF Tools is free to download, with in-app purchases available.
Do Study Guard or PDF Tools have ads?
Neither Study Guard nor PDF Tools shows ads.

Other comparisons