Comparison

PDFlow vs Deep Focus Noise Machine

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

Head to head
About

PDFlow

Features
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PDFlow Scan AI transforms your iPhone or iPad into a professional document scanner and PDF manager. Whether you're digitizing important papers, organizing receipts, or creating searchable PDFs, our app provides all the tools you need in one seamless experience. POWERFUL SCANNING CAPABILITIES Turn any document into a high-quality PDF with just a few taps. Our intelligent camera technology automatically detects document edges, enhances text clarity, and corrects perspective distortion. Scan multiple pages to create comprehensive PDF documents perfect for contracts, reports, or study materials. Key scanning features: • Auto-edge detection and perspective correction • Multiple page scanning with easy reordering • Image enhancement for crystal-clear text • Instant PDF creation from photos or camera SMART DOCUMENT MANAGEMENT Keep your digital documents organized and accessible. Our intuitive file management system lets you browse, search, and organize PDFs effortlessly. Create folders, rename files, and find any document in seconds. Organization features: • Quick document search and filtering • Easy rename and delete functions • Share documents • Secure local storage with iCloud backup support PROFESSIONAL PDF VIEWER Experience PDFs like never before with our feature-rich viewer. Navigate large documents with ease, search for specific content, and customize your reading experience. Perfect for reviewing contracts, studying materials, or reading reports on the go. Viewer capabilities: • Full-text search with highlighting • Thumbnail navigation for quick page access • Page picker for jumping to specific sections • Multiple display modes: single page, continuous, or two-page view • Page rotation for landscape documents • Zoom controls for detailed viewing PREMIUM FEATURES Unlock the full potential of PDFlow Scan AI with our Premium subscription: • OCR Technology: Convert scanned images into searchable and editable text. Extract information from receipts, business cards, or any printed material • AI-Enhanced Processing: Improve scan quality automatically with intelligent image enhancement • Batch Processing: Handle multiple documents simultaneously for increased productivity • Advanced Export Options: Save in various formats and resolutions • Priority Support: Get help when you need it most • Ad-Free Experience: Focus on your work without distractions BUILT FOR PROFESSIONALS AND STUDENTS PDFlow Scan AI adapts to your workflow needs: • Business professionals: Digitize contracts, invoices, and business cards • Students: Scan textbooks, notes, and assignments • Travelers: Keep digital copies of important documents • Home users: Organize warranties, receipts, and personal papers PRIVACY AND SECURITY Your documents are your business. All files are stored locally on your device with optional encrypted iCloud backup. We never access or share your personal documents. Face ID/Touch ID support adds an extra layer of security. SUBSCRIPTION OPTIONS Choose the plan that works for you: • Monthly Premium: Full access with flexible monthly billing • Annual Premium: Best value with significant savings Both plans include: Unlimited OCR processing All premium features Regular updates and improvements Cancel anytime WHY CHOOSE PDFLOW SCAN AI? • Intuitive Design: Clean, modern interface that's easy to navigate • Fast Performance: Optimized for all iOS devices • Regular Updates: Continuous improvements based on user feedback • Reliable Support: Dedicated team ready to help • No Hidden Fees: Transparent pricing with no surprises PDFlow Scan AI is more than just a scanner – it's your complete document management solution. From capturing documents to organizing and sharing them, we've streamlined every step of the process. Join thousands of users who've made PDFlow Scan AI their go-to document scanner. Download today and experience the difference professional-grade scanning can make in your daily workflow.

About

Deep Focus Noise Machine

This app generates unique, real-time audio soundscapes designed to prevent neural adaptation and enhance focus for neurodivergent individuals. It offers various noise colors and neurally-validated presets to create a spatial shield against distractions, all while operating 100% offline.

Highlights
  • Real-time generative audio, no loops
  • Spatial shielding with HRTF
  • Neurally-validated presets
  • Brown, pink, speech-shaped, and white noise
  • 100% offline functionality
  • Privacy-first, zero data tracking
  • Battery efficient native synthesis
Features
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dpli creates real-time, evolving spatial soundscapes for ADHD focus and deep work — generated live on your device, never played from a loop. Unlike standard noise apps that replay prerecorded tracks, dpli synthesizes every layer in real time. Sound sources can move through space, shift in intensity, and modulate independently, creating an immersive background that stays dynamic throughout your session. BUILT FOR FOCUS Choose a preset based on what you need: • SHIELD — A steady spatial soundscape designed to mask conversations, office noise, and sudden distractions. • FLOW — Moving, asymmetric layers that create an engaging background for writing, coding, studying, and deep work. • CLARITY — Steady, precisely layered noise that masks distractions and creates a clear background for writing, coding, studying, and deep work. • IGNITION — Designed for ADHD brains or anyone needing a strong push into active focus. An energizing white-noise field with dual-rhythm pulses and airy blue-noise sparkle that drives alertness and mental speed. • RELAX — A heavy brown-noise blanket with two pink streams drifting slowly around your head — eases you into deep physical relaxation while staying awake. Good for winding down, tension release, or a mid-day relax. • RESET — A still, dark cocoon with a slow warm breath that gently sways around you — shifts the mind from stress into rest. Best for 10–20 minute breaks when you feel wound up or anxious. SESSIONS — YOUR RHYTHM OF WORK AND REST Build your own sound sequence on iPhone or Mac. Choose a sound and duration for each stage — FLOW for focused work, then RELAX for a break, for example. dpli blends smoothly between stages and gently fades out at the end. Start with one stage using a free sound. Premium unlocks additional stages and the full preset collection. MORE THAN COLORED NOISE Brown, pink and white noise generators are included for free. They are also the building blocks behind dpli’s layered presets, where position, movement, modulation, and frequency balance work together to create a richer listening environment. GENERATED, NOT STREAMED • No prerecorded audio files • No repeating MP3 loops • Real-time synthesis on your device • Spatial movement and independent modulation • Works offline with no account required PRIVATE BY DESIGN Your sessions stay on your device. dpli does not stream audio, require an account, or collect listening data. MADE FOR THE APPLE ECOSYSTEM Use dpli on iPhone, Mac, and Apple Watch. Start a session wherever you work, study, travel, or need a more controlled acoustic environment. dpli is a focus and sound-masking tool. It is not intended to diagnose, treat, or cure ADHD or any other medical condition. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PDFlow4 screens
Deep Focus Noise Machine4 screens

Verdict

The call

The clearest difference is in-app purchases: PDFlow at none against Deep Focus Noise Machine's 4. Deep Focus Noise Machine's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Deep Focus Noise Machine sells 4 in-app purchases, starting at $0.99 per month. PDFlow asks for nothing beyond the download.

Scorecard2 real differences · 8 level
PDFlow versus Deep Focus Noise Machine: the parameters behind the verdict, then further details
ParameterPDFlowDeep Focus Noise Machine
PriceFreeFree
Rating—4.8 (25 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—25 — better
Update frequency—Weekly
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.617.6
Further details — not scored
Size9 MB13 MB
Age rating17+4+
DeveloperDavid VillegasLukasz Solniczek

In-app purchases

None

PDFlow

No in-app purchases

4 purchases

Deep Focus Noise Machine

Subscriptions3
  • Dpli Monthly$0.991 Month
  • Dpli weekly$0.997 Days
  • Dpli Yearly3 Days trial$12.991 Year
One-time1
  • Dpli lifetime access$12.99

Questions

Is PDFlow free?
PDFlow is free to download, with no in-app purchases.
Is Deep Focus Noise Machine free?
Deep Focus Noise Machine is free to download, with in-app purchases available.
Do PDFlow or Deep Focus Noise Machine have ads?
PDFlow shows ads; Deep Focus Noise Machine does not.

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