AIChatOCR vs Notedown
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AIChatOCR
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Perfect for These Private Scenarios * Organizing secret notes and diaries Summarize and structure personal records. Nothing ever leaves your device. * Private consultations Relationship advice, health notes, family matters—topics you hesitate to ask online AI. Fully offline and secure. * Personal document management Read passports, bank statements, and handwritten notes, then ask questions. Keep sensitive data completely safe. Key Features * High-Accuracy OCR Convert photos into text with your camera. Handwritten notes are recognized with high precision. * AI Chat Interaction Summarize long texts, extract key points, and create bullet lists via chat. Even sensitive conversations stay entirely on-device. * Flexible Information Extraction Keyword extraction, field extraction, Q&A, translation, and more. * User-Friendly UI Chat-style interface with intuitive access to conversation history. * Export & Share Export or share messages when needed. Get Started in 3 Easy Steps 1. Import documents Scan and capture private notes instantly. 2. Automatic OCR text extraction Fast, fully offline processing. 3. Chat with AI Summaries, questions, and more—no external servers required. Try it for free now! Your personal, private AI assistant awaits. Frequently Asked Questions * Supported documents Contracts, academic papers, diaries, and more. Japanese and English supported. * Offline usage Yes. All processing is done entirely on your device. * Data privacy No external data transmission. Zero leakage, even for sensitive conversations. Privacy Policy AIChatOCR performs all processing entirely on your device. No data is sent externally and no data is shared with third parties. Important Notes This app performs intensive data processing. Extended use or heavy workloads may cause the device to heat up. Due to high memory usage, the app may unexpectedly terminate (crash) depending on device performance. Support If you have any questions or requests, please contact us via “App Support” listed on the App Store. System Requirements * iOS 18.0 or later * iPhone 14 or later recommended
Notedown
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Notedown is a featherweight markdown notes app for people who just want to write. No accounts, no sync, no clutter — every note is saved as a plain .md text file on your device and never leaves it. WRITE IN MARKDOWN Use familiar markdown to structure your thoughts: headings, bold and italic, bulleted lists, checkboxes, quotes, code, and links. A one-tap formatting toolbar inserts the syntax for you, so you never have to remember it. EDIT OR PREVIEW Flip between a distraction-free editor and a clean rendered preview with a single tap. See exactly how your note looks, then jump back to writing. FULLY OFFLINE, FULLY YOURS Your notes are stored as standard markdown files in the app's own folder on your device. There is no cloud, no login, and nothing to set up. What you write stays with you. FIND ANYTHING FAST Search across all of your notes instantly. The list keeps your most recently edited notes at the top. SHARE WHEN YOU WANT Export any note as markdown text through the standard share sheet. SIMPLE BY DESIGN - Light and dark themes - English and Japanese - Portrait, one-handed friendly layout - Free to use (contains ads) Notedown is the calm, lightweight alternative to heavy note apps — just markdown, and nothing in your way.
Screenshots
Verdict
The clearest difference is ads: Notedown at none against AIChatOCR's shown. Notedown also leads on update cadence (every 4 days vs fortnightly). On price, in-app purchases, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
AIChatOCR ships an update fortnightly, Notedown every 4 days. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.
| Parameter | AIChatOCR | Notedown |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 1.6 GB | 24 MB |
| Age rating | 12+ | 4+ |
| Developer | Shusuke Hashimoto | Yuki Okawa |
In-app purchases
AIChatOCR
No in-app purchases
Notedown
No in-app purchases









