Comparison

Smart PDF Scanner vs Second Brain TokKong

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

Head to head
About

Smart PDF Scanner

Transform your mobile device into a powerful scanner. Capture documents, receipts, and notes with high-quality scans. Organize your files with custom categories and easily share them as PDFs or images.

Highlights
  • High-quality document scanning
  • Automatic edge detection and perspective correction
  • Color-coded organization system
  • Export as PDF or image
  • Direct sharing via email, AirDrop, and cloud services
  • FlashAssist for low-light scanning
Features
Read full description

Ditch the bulky office copier! Smart PDF Document Scanner turns your iPhone or iPad into a pro scanner app. Just snap a photo to scan pdf files that you can instantly send to your colleagues, clients, or keep for personal records. TACK SHARP SCANS That processor in your phone is quite a little monster. Smart PDF Scanner uses it fully to make the best possible scans. Even full-page articles come out tack-sharp and easy to read. It automatically detects the page edges and corrects for perspective. Pick full-color scans, grayscale, or black-and-white for maximum legibility. FlashAssist can take perfect scans even in poor lighting conditions. You can even change the correction and enhancement settings after the fact. POWERFUL COLOR-CODED ORGANIZATION Scanning is just half the problem. You need a good way to keep all your documents organized, and easy to find later. Smart PDF Scanner uses a simple tagging system that is much easier and more powerful than the regular folder system. File documents under custom color-coded categories with just a couple taps. Browse and sort files by category with a couple more. It's the way filing should work. EASY TO SHARE Export scans as PDFs or images, and email or print directly from the App. Files can also be shared via AirDrop, or sent to another App. Easily upload to Dropbox, Google Drive, and other cloud services with the corresponding third party App. Send PDFs and images to services such as Evernote or OneNote to take advantage of their OCR capabilities. FOR ALL YOUR SCANNING NEEDS + Quickly scan and send contracts and forms + Keep scans of important documents in your pocket, separate form the Photo Library + Scan all your travel receipts for easy expense reports + Keep digital copies of your notes and sketches + Scan articles and send them to iBooks to read on the go + And more! APPS BUILT FOR PROFESSIONALS Smart PDF Scanner uses the latest technologies packed into your iPhone and iPad, but we've worked hard to make it as easy and fast to use as possible. Intelligent image processing eliminates the need for fiddling with complicated controls. That way, you can focus on getting the job done, and doing what you do best. TIPS AND TRICKS Here are a few tips to get the best scans: + Place your document on a darker surface to improve the edge auto-detection. + You can drag the corners of the blue rectangle to fine tune it after taking a photo. + Make sure there is adequate lighting. Use the flash in low-light conditions. + You can tap on a page to edit its scan settings (including edges) after the fact. MADE BY DEVELOPERS WHO CARE We are dedicated to handcrafting the best possible Apps for your iPhone and iPad, and we hope you enjoy using Smart PDF Scanner. If you have any additional questions, please drop us a line via our feedback page. Best regards, -- The App Makers @ Qrayon.

About

Second Brain TokKong

This app transcribes voice to text and translates speech offline, all on your device. It offers AI-powered polishing, custom prompts for various text formats, and the ability to chat with PDFs privately.

Highlights
  • Offline voice to text transcription
  • On-device AI for text polishing
  • Offline speech translation
  • Custom AI prompts for various text formats
  • Chat with uploaded PDFs offline
  • Siri Shortcuts integration
  • Export transcripts to SRT and TXT
Features
Read full description

Stuck on a 14-hour flight? Bad hotel WiFi again? No problem. TokKong turns your voice into text anywhere in the world - no internet required. Powered by Whisper AI and on-device LLM, everything happens right on your iPhone or Mac. Your recordings never leave your device. Ever. WHAT MAKES TOKKONG DIFFERENT Most transcription apps send your audio to the cloud. We don't. Not a single byte. Whether you're recording a confidential meeting, a private memo, or that million-dollar idea at 3am - it stays between you and your phone. FEATURES YOU'LL ACTUALLY USE Talk & Transcribe Hit record. Speak. Get text. It really is that simple. Works for meetings, lectures, interviews, voice memos, or that long voicemail you don't want to listen to. Export to SRT subtitles when you need them. Drop In Any Audio Got a voice message? Audio file? Video with speech? Drop it in, get text out. WhatsApp, iMessage, whatever - if it has voice, we'll transcribe it. Translation That Works Offline Yes, really. Translate speech between major languages without hunting for WiFi. Perfect for international trips. AI That Polishes Your Words Messy transcript? Our on-device AI cleans it up - punctuation, formatting, grammar. Your words, but better. Custom Prompts - Your Voice, Any Format This is where it gets wild. Create your own AI prompts and transform voice into ANY text format: FOR DEVELOPERS (Vibe Coding) Speak your logic, get actual code. "Create a Python function that sorts a list" - done. Set up prompts for code snippets, terminal commands, SQL queries, API requests, even git commits. It's like pair programming with your voice. FOR BUSINESS PROS Turn rambling voice notes into polished output: - Meeting thoughts → formatted action items - Quick ideas → professional email drafts - Client calls → CRM-ready notes - Brainstorms → organized project briefs FOR CREATORS Raw ideas → social posts, script outlines, show notes. Whatever format you need, just speak and let your custom prompt handle the rest. Chat With Your PDFs Upload contracts, reports, or research papers. Ask questions. Get answers. All offline, all private. Quick Memo Mode Brain dump mode. Capture thoughts fast. Find them later. Simple. Hey Siri, Start Recording Hands full? Use Siri Shortcuts. Launch transcription, start memos, process files - all voice-controlled. Never Lose Anything Every transcript saved. Searchable. Shareable. Organized. On your device where it belongs. THE FINE PRINT (BUT GOOD) - Works in airplane mode, submarines, or anywhere with zero signal - No account needed. No sign-ups. No emails. - Buy once, own forever. No subscriptions trying to sneak up on you. - iPhone, iPad, Mac - pick your device - Export to SRT, TXT, or just copy-paste WHO'S THIS FOR? The developer who wants to vibe code without touching a keyboard. The business traveler tired of airport WiFi. The journalist protecting sources. The student recording every lecture. The lawyer who needs bulletproof privacy. The creator with ideas at 3am. Or anyone who just wants their data to stay their data. BEFORE YOU DOWNLOAD TokKong runs AI locally on your device. For the smoothest experience, we recommend iPhone 15 or newer. Older devices work too - just a bit slower. It's physics, not a paywall. --- Your voice. Your words. Your device. Nobody else's business. Feel free to reach out to me and report any issues or leave your comments. I will try my best to enhance the user experience and provide better services - x.com/lbjhkg

Screenshots

Smart PDF Scanner4 screens
Second Brain TokKong4 screens

Verdict

The call

The clearest difference is price: Second Brain TokKong at Free against Smart PDF Scanner's $4.99. Second Brain TokKong also leads on update cadence (weekly vs every 4 months) and rating (5.0 vs 4.7). Smart PDF Scanner's advantage is in-app purchases (none vs 2) and ratings volume (472 vs 1). On ads, monetization model and device support 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

Second Brain TokKong is free to download; Smart PDF Scanner costs $4.99 up front. Second Brain TokKong sells 2 one-off in-app purchases. Smart PDF Scanner asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Second Brain TokKong holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Smart PDF Scanner has 472 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of Smart PDF Scanner's written reviews are positive against 100% of Second Brain TokKong's.

UpkeepUpdate frequency

Smart PDF Scanner ships an update every 4 months, Second Brain TokKong weekly. The most recent releases landed on October 20, 2026 and October 2, 2026 respectively.

Scorecard7 real differences · 3 level
Smart PDF Scanner versus Second Brain TokKong: the parameters behind the verdict, then further details
ParameterSmart PDF ScannerSecond Brain TokKong
Price$4.99Free — better
Rating4.7 (472 ratings)5.0 (1 ratings) — better
Positive reviews86.5% of reviews100.0% of reviews — better
Number of ratings472 — better1
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.6 — better18.0
Further details — not scored
Size12 MB1.7 GB
Age rating4+4+
DeveloperQrayon, LLCBingjun Li

Customer experience

Smart PDF Scanner

All ratings472 ratings
Positive94.3%
Neutral2.1%
Negative3.6%
Written reviews251 reviews
Positive86.5%
Neutral4.8%
Negative8.8%

Second Brain TokKong

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Smart PDF Scanner

Reported bugs

2 issues
  • Crashes when saving or exporting files
  • Inconsistent border detection on certain surfaces

Requested features

4 requests
  • Backup and restore functionality
  • Batch processing and multi-select options
  • OCR and text extraction capabilities
  • Improved file management and organization

Second Brain TokKong

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Smart PDF Scanner

No in-app purchases

2 purchases

Second Brain TokKong

One-time2
  • TokKong Online AI Service Package$1.99
  • TokKong Pro$9.99

Questions

Is Smart PDF Scanner free?
Smart PDF Scanner costs $4.99, with no in-app purchases.
Is Second Brain TokKong free?
Second Brain TokKong is free to download, with in-app purchases available.
Which has better reviews, Smart PDF Scanner or Second Brain TokKong?
Second Brain TokKong is rated higher. Smart PDF Scanner averages 4.7 out of 5 from 472 ratings, while Second Brain TokKong averages 5.0 from 1 ratings.
Do Smart PDF Scanner or Second Brain TokKong have ads?
Neither Smart PDF Scanner nor Second Brain TokKong shows ads.
Which is updated more often, Smart PDF Scanner or Second Brain TokKong?
Smart PDF Scanner ships an update every 4 months, and Second Brain TokKong weekly. Most recently, Smart PDF Scanner was updated on October 20, 2026 and Second Brain TokKong on October 2, 2026.

Other comparisons