Comparison

ThinkAloud Notes vs PDFnano

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

Head to head
About

ThinkAloud Notes

Record your thoughts and let on-device AI transform them into structured notes with titles, tags, and links. Your data stays private on your phone, with no accounts or subscriptions required. Access and manage your notes as standard Markdown files.

Highlights
  • Voice, photo, and text input
  • On-device AI note generation
  • Automatic tagging and linking
  • Ask questions about your notes
  • Knowledge graph creation
  • Markdown file export
  • Optional cloud sync
Features
Read full description

You think out loud. ThinkAloud writes it down. Hit record and just talk: a passing idea, a meeting, a whole lecture. When you stop, you can play the recording back and decide whether it's worth keeping before anything happens to it. Only then does the on-device AI turn it into a real note, with a title, some structure, tags, and links to the related notes you already have. Here's the part that matters. All of this happens on your phone. ThinkAloud runs Google's Gemma model locally, so your voice and your notes never get uploaded anywhere. There's no account to create, no server in the middle, and nothing to pay every month. You download the model once, and after that it works offline. Your notes are just Markdown files in an ordinary folder, the same format Obsidian uses. Point ThinkAloud at a vault you already have, or let it keep one for you. Either way you can open, edit, or back them up with any app you like. Nothing is trapped inside. What it's good at: - Voice, photos, or quick text go in; clean, tagged notes come out - Ask your notes a question in plain language and get an answer with its sources listed, so you can tap straight through to where each fact came from - A knowledge graph that builds itself as your notes start linking up - Full-text search, tags, folders, and checklists - Optional sync to your own Google Drive or iCloud. Your account, a private folder, no servers of mine in between. No ads, no analytics, no tracking, no accounts. I made ThinkAloud because I wanted a notebook that was actually mine. That's the whole idea. The on-device model needs around 3 GB of free space and a fairly recent device.

About

PDFnano

Edit, translate, and manage PDF documents with a focus on on-device privacy. This app offers tools for scanning, converting, annotating, and organizing your files locally.

Highlights
  • Read, organize, and manage PDFs
  • Offline PDF translation with layout preservation
  • Scan documents and create PDFs
  • Convert PDFs to Word, Excel, or images
  • OCR for Arabic and English text
  • Add signatures and annotations
  • Remove hidden metadata for privacy
Features
Read full description

PDFnano is a comprehensive, privacy first PDF workstation engineered for iOS. It combines the power of fully offline document processing with the advanced analytical intelligence of Apple Private Cloud Compute PCC. Whether managing contracts, financial reports, academic research, or scanned archives, PDFnano delivers reliable productivity in one unified workspace. Core Capabilities: 1. Document AI Assistant (Beta): • Executive summaries for lengthy reports and dense documentation. • Instant extraction of decisions, next steps, and action items. • Detection and structured review of contractual obligations and legal risks. • Custom interactive inquiries grounded in verifiable verbatim citations. • Private and encrypted processing: Utilizes Apple Intelligence and Apple Private Cloud Compute PCC for complex reasoning, ensuring your document content is never stored, never logged, and inaccessible even to Apple. *Note: AI Assistant features require devices supporting Apple Intelligence and are currently in Beta. 2. Offline Document Translation (Beta): • Translate entire PDF files locally while strictly preserving fonts, layout, tables, and graphic elements. • One tap batch approval for documents up to 100 pages. • Granular paragraph level editing and translation review. *Note: Translation operates locally on device and is currently in Beta. Machine translation may contain errors. 3. High Performance Reading and Navigation: • Vertical fast page scrubber for instantaneous navigation across hundreds of pages with live page bubble indicator. • Seamless alignment with the Dynamic Island, status bar, and notch areas. • Instant viewport settling returning immediately to your exact reading location. • Double tap smart zoom and floating capsule for effortless navigation while zoomed in. • Visual OCR search on scanned documents and images with multi word phrase matching and typo tolerance. 4. Conversion and Document Scanning: • High fidelity PDF to Word docx conversion maintaining structure and typography. • Extract tables into Excel xlsx spreadsheets with automated data type recognition. • Integrated document scanner with perspective correction and edge detection. • Convert images to PDF and export PDF pages as high resolution images. 5. Editing, Signing, and Organization: • Create, place, and verify digital signatures on agreements and official forms. • Markup toolkit: pen, highlighter, sticky notes, and text annotations. • Reorder, rotate, delete, and extract individual pages. • Merge multiple PDF documents or split pages into independent files. • Smart file size compression for seamless sharing. 6. Uncompromising Privacy Architecture: • True local processing: Core reading, editing, translation, OCR, and file conversions execute entirely on device without an internet connection. • Cryptographically secure cloud intelligence: Any internet connectivity required by the AI assistant connects exclusively to Apple Private Cloud Compute PCC with cryptographic privacy guarantees. • Face blurring and visual redaction to shield confidential areas. • Metadata sanitization to strip author, GPS, and creation timestamps. • Document password encryption, AirPrint support, and interactive home screen widgets. Certain tools include daily usage limits in the free version. Unlimited access and pro features can be unlocked through an in app purchase. Standard Terms of Use: https://www.apple.com/legal/sla/

Screenshots

ThinkAloud Notes4 screens
PDFnano4 screens

Verdict

The call

The clearest difference is in-app purchases: ThinkAloud Notes at none against PDFnano's 1. ThinkAloud Notes also leads on iOS requirement (16.0 vs 18.6). PDFnano's advantage is update cadence (every 2 days vs every 2 weeks). On price, rating, ratings volume 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. PDFnano sells 1 one-off in-app purchase. ThinkAloud Notes asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for ThinkAloud Notes against 5.0 for PDFnano. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

ThinkAloud Notes ships an update every 2 weeks, PDFnano every 2 days. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
ThinkAloud Notes versus PDFnano: the parameters behind the verdict, then further details
ParameterThinkAloud NotesPDFnano
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.6
Further details — not scored
Size116 MB20 MB
Age rating4+4+
DeveloperGhanashyam Vinod TattiThamer Mohammed

Customer experience

ThinkAloud Notes

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PDFnano

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ThinkAloud Notes

No in-app purchases

1 purchases

PDFnano

One-time1
  • PDFnano Pro Lifetime$1.99

Questions

Is ThinkAloud Notes free?
ThinkAloud Notes is free to download, with no in-app purchases.
Is PDFnano free?
PDFnano is free to download, with in-app purchases available.
Which has better reviews, ThinkAloud Notes or PDFnano?
ThinkAloud Notes and PDFnano are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do ThinkAloud Notes or PDFnano have ads?
Neither ThinkAloud Notes nor PDFnano shows ads.
Which is updated more often, ThinkAloud Notes or PDFnano?
ThinkAloud Notes ships an update every 2 weeks, and PDFnano every 2 days. Most recently, ThinkAloud Notes was updated on October 7, 2026 and PDFnano on October 11, 2026.

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