Duet vs HonestScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Duet
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Read closed. Think open. Duet is a PDF reader for people who need to make sense of what they read. Highlight a passage and it becomes a card on a Canvas beside the page. Group your cards, connect them, add notes and questions, and work out what you think. Leave and come back later, and you're on the line you left. Now on iPhone, iPad and iPhone Duo. FREE TO START Your first two PDFs are free, each with its Canvas, Apple Pencil, private AI and the iPhone Duo layouts. No trial clock and no account. DUET PRO One purchase unlocks: • Unlimited PDFs, each with its own Canvas • All six themes • Home Screen and Lock Screen widgets Pay once and keep it. No subscription. Pro works on every iPhone, iPad and iPhone Duo signed in to the same Apple Account. THE CANVAS Every highlight arrives as a card, linked to its page. On the Canvas you can: • Clip passages straight from your PDF • Add sticky notes and text • Group and connect ideas with shapes and arrows • Lay out numbers in tables • Add photos from your library • Draw with your finger, or with Apple Pencil on iPad • Record voice notes, transcribed on your device so you can search them PRIVATE AI Ask about a passage, a card or a group of cards, and pin the answer to your Canvas. Answers come from your document and show the pages they came from. Duet uses Apple Intelligence on your device, so it works without internet, even on a flight, and your document stays with you. For bigger questions across a whole report, you can let Duet use Apple's Private Cloud Compute in Settings. It's only used when you're online. AI features need a device that supports Apple Intelligence. ON IPHONE DUO Read with the phone closed. Open it, and the page and its Canvas sit side by side. Half-folded like a book or flat on a table, the layout changes and every feature stays. Close it and you're back on the line you left. ON IPAD AND IPHONE iPad gives the Canvas the most room. Write and draw with Apple Pencil, and use Scribble to turn handwriting into text. On iPhone, the page and its Canvas are one tap apart. On iPad and iPhone Duo, open two reports side by side in Split View. WIDGETS (DUET PRO) For your Home Screen and Lock Screen: • Continue Reading opens the line you left. The larger sizes show your latest highlights too. • Recents shows your latest documents. • Latest Highlights shows recent passages from all your PDFs. SIX THEMES Ink & Paper is free. Studio Green, Studio Black, Tapestry, Cyanotype and Dawn come with Duet Pro. Each one changes the background, cards, highlight colour and app icon. YOUR LIBRARY Each PDF shows its page count and how many highlights you've made. Import from Files, Mail and Safari. Free to download. Duet Pro is a one-time in-app purchase. No subscription, no account, no ads. If anything's unclear, or something isn't working, get in touch: deepanshi@consciousengines.com Privacy Policy: https://duetreader.app/privacy Terms of Use: https://duetreader.app/terms
HonestScan
Transform paper documents into editable text with advanced OCR and correction tools. Scan, check, and export documents as PDFs, Markdown, or ZIP files, with optional integration for further management.
- OCR text recognition
- Edge detection and perspective correction
- Text editing alongside original scan
- Markdown and PDF export
- ZIP file export with original scans
- Receipt amount and VAT checking
- Customizable themes and text size
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Scan → check and correct → shrink → export. HonestScan turns receipts, documents, contracts and study notes into text you can edit and send on with the original scan. It works on its own – you do not need DashBase to use it. FROM PAPER TO EDITABLE TEXT • Scan with edge detection and perspective correction, or import photos. • Let the app recognise the content type. Process several photos separately or as pages of one document. • OCR runs on your device. Markdown retains headings, paragraphs, lists and recognised tables, with page boundaries to help you navigate. CHECK AND CORRECT • Edit text alongside the original scan. Adjust the split, enlarge the original and pan around it. • Format headings, bold text and lists, then check the preview. • Czech and English dictionaries underline unknown words. Keep a personal allowed-word list for names and specialist terms. • Check receipt amounts and warnings about inconsistent totals and VAT. • Check uncertain formulas against the original. Detected diagrams are preserved as images with their original labels, between text and formulas. • Recognise a saved document again without importing it twice. Your manual edits stay intact, with automatic recognition shown separately. SHRINK AND SEND ON • Choose scan compression and preview the result before exporting. • Save a PDF, corrected Markdown or both. The PDF includes the scan and a searchable text layer. • Save a portable ZIP to Files with the original scan, corrected text and related images. Notes with diagrams also include an offline preview showing text and pictures together. • Choose a folder on your iPhone, iCloud Drive or another provider in Files. • Find exported packages inside the app. Select several to forward, move or delete together. • Export a receipt overview as CSV for your accountant. OPTIONALLY SEND TO DASHBASE • Transfer corrected text, every scan page and diagrams to DashBase on iOS or Mac. There you can manage purchases, warranties, claims and contract dates. • Save the same content to Files or share it elsewhere instead. You choose where it goes. MAKE IT YOURS • Choose a light or dark theme independently of the system, plus text size and font style. • Group notes by subject, search, review handed-off documents and restore items from the bin. • Czech and English interface. HonestScan is for capture, checking and handing off. You choose where to keep things long term.
Screenshots
Verdict
The clearest difference is in-app purchases: HonestScan at none against Duet's 1. HonestScan also leads on iOS requirement (18.0 vs 27.0). On price, ads 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
Both are free to download. Duet sells 1 one-off in-app purchase. HonestScan asks for nothing beyond the download.
| Parameter | Duet | HonestScan |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 27.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Conscious Engines | Jiri Kluciar |
In-app purchases
Duet
- Duet Pro Lifetime$9.99
HonestScan
No in-app purchases





