OnePreview vs Sebastian

Preview Markdown, source code, structured data and archives on iPhone and iPad. OnePreview is a local-first file viewer with no account required. READ MARKDOWN, DIAGRAMS AND MATH View GitHub-style Markdown with tables, task lists and highlighted code. Switch between rendered content and source. Mermaid diagrams and KaTeX formulas use bundled rendering assets. EXPORT MARKDOWN TO PDF Open a standard Markdown file (.md or .markdown) in OnePreview to create an A4 PDF report. Check the actual PDF preview, with continued table headers, wrapped code, Mermaid diagrams and KaTeX formulas, then save it using the system file interface. Document content is processed on your device. INSPECT DATA, CODE AND ARCHIVES Read structured data and source code, inspect SQLite schemas and sample rows without editing the database, and see the folder hierarchy inside ZIP and TAR.GZ archives before extracting. SUPPORTED FORMATS Markdown (.md, .markdown), MDX, TextBundle, TextPack, JSON, JSONL, YAML, XML, CSV, TSV, TOML, ENV, INI, properties, Apple property lists (plist), SQLite (.sqlite, .sqlite3, .db), source code, plain text, logs, ZIP, TAR.GZ and TGZ. Syntax highlighting supports languages including Swift, Python, JavaScript, TypeScript, Java, C/C++, Objective-C, Ruby, Rust and Shell. OPEN YOUR FILES Tap Open File in OnePreview, or long-press a supported document in Files, choose Open With, then select OnePreview. A normal tap in Files may use Apple's built-in preview; OnePreview does not replace every system preview on iPhone or iPad. Try the sample folder from the home screen to explore supported formats.

“Lunch with Mom tomorrow at noon.” “Pick up the dry cleaning this week.” Just say or type it — your personal AI butler, Sebastian, reads the date, time, and reminder, shows you a confirmation card, and only adds it to your calendar once you tap “Add.” No more fiddly date pickers. ■ WHAT SEBASTIAN DOES • Chat naturally, like texting a friend, and Sebastian turns it into a real event or reminder • Timed plans go to your iPhone Calendar; open-ended to-dos go to Reminders — sorted automatically • Every entry is shown on a confirmation card first. Nothing is ever added without your OK • Month / Week / Day calendar views — tap any date to see what's on • Tap an empty time slot to add an event directly • Full manual add/edit screens too, with the same options as Apple's own Calendar — URLs, repeat rules, and more • Home Screen widgets (Month / 2 Weeks / Week+Quick Add / Add Event / Family Today) and a Siri Shortcut (“Hey Siri, Sebastian”) to jump straight into chat • iPad supported • Events are saved straight to your iPhone's own Calendar (EventKit), so they also show up on Apple HomeView's calendar face automatically • Add events from images — pick up to 3 photos, screenshots, or files in Chat; text is read on your device ■ HOW THE AI PARSING WORKS • Chat parsing runs on Anthropic's Claude on every device. Only the text you type or speak, or text read from an image on your device, is sent through our relay server to Anthropic — never the image itself, nor your name, contacts, calendar contents, or location • Free: 10 AI parses per month. Sebastian Pro: 100 per month (same Claude engine) • According to Anthropic, inputs received through its API are not used to train its models, and inputs and outputs are automatically deleted within 30 days (except to enforce its usage policy or where required by law) • In version 1.9.3 the AI destination changed from Google (Gemini) to Anthropic (Claude). Even if you agreed in an earlier version, a new consent sheet appears the first time you use AI parsing • Sebastian shows you what will be sent and where, and asks for consent first. Nothing is sent until you agree; turn it off anytime in Settings > AI Parsing (Claude) • If you don't consent, or you're offline, manual add/edit still works with no limits • Events and reminders themselves are stored only on your device and in your iCloud • Optional, off by default: share anonymized correction examples to improve accuracy • Anonymous usage statistics (app opens, session length, events created) — no message text, event contents, or personal data. Opt out anytime in Settings • No account or sign-in required, ever ■ SEBASTIAN PRO (optional, auto-renewing monthly subscription, ¥100/month) • Hides ads and raises your monthly AI parsing limit to 100 (free: 10/month) • Payment is charged to your Apple ID and renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in iOS Settings > Apple ID > Subscriptions • If you were already subscribed to the previous ¥500/month "Sebastian Pro," your existing benefits (no ads, 30/day) continue unchanged ■ SHARING (optional, no sign-in required) • From the Sharing tab, create a group and send an invite link to see plans with family, friends, or coworkers • Shift workers: share your shift calendar with your team as "busy only" — coworkers see when you're free, never your private titles • Friends & family: share full titles in a separate group. Per group, choose which calendars to share • The group screen shows everyone's schedule in a month grid; "Who's free" shows the days everyone is open • "Family Today" widget: each member's next event today, on your Home Screen • No name, email, or sign-in required. Leave anytime via Settings > Other > "Delete Sharing Account," or by leaving an individual group • If you never open the Sharing tab, no data for this feature is ever sent ■ Terms of Use (EULA) / Privacy Policy https://drqururi.github.io/sebastian-legal/en/