Sebastian Assistant vs HyBran
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sebastian Assistant
This app offers a streamlined way to manage reminders, notes, and actions through voice or text input. It features a smart dashboard for daily overviews, customizable widgets, and a privacy-first approach with on-device data storage.
- Voice + Text Actions
- Smart Dashboard
- Sticky Notes
- Widgets & Standby
- Customizable Sections
- Privacy-First
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Sebastian — Daily Assistant Sebastian pulls your calendar, reminders, notes, medications, alarms and timers into one place, and keeps them tied to the people they are actually about. THREADS Link a calendar, a reminder list, a note, an alarm or a timer to a person, and Sebastian builds them a thread — one timeline of every appointment, refill, note and comment involving them. Filter it to one kind of entry, then share it as text or a formatted PDF. It is the fastest way to answer "what has been going on with Mum's care?" without digging through four apps. YOUR DAY • Today: events, due reminders and what needs attention, in a dashboard you arrange yourself. • Reminders: group by list, due date, priority or status. Save Quick Views, act on many at once, and timebox a task straight onto your calendar. • Calendar: day, week and month, with conflict spotting and travel time. • Notes: Markdown, images and attachments, with their own widgets. MEDICATIONS Track refills by stage, link them to the person taking them, log pickups, and set a pharmacy reminder for when you arrive. Finished a course? Archive it and keep the history without the repeats. TIMERS, ALARMS AND FASTING Multiple named timers, full alarm scheduling, and fasting timers that keep running past their target so you can see how long you actually fasted. WIDGETS AND SHORTCUTS Home Screen, Lock Screen and StandBy widgets, launcher cards, Live Activities, Control Center controls, Spotlight search and Siri Shortcuts. DRIVE MODE A large-type, glanceable view of what is next when you are on the road. PRIVACY Your calendar, reminders and contacts stay on your device and in Apple's own apps. Sebastian asks for what it needs and nothing more. There is no account and no sign-up. FREE AND PLUS Free shows every calendar and reminder list you have — nothing is hidden. You can add to and edit any three of each, and tick off or delete a reminder wherever it lives. It includes alarms, timers, medication refills, severe weather alerts, and the small and medium widgets. Sebastian Plus is a single one-time purchase — no subscription, nothing to renew — and it lifts every limit: editing in all your calendars and lists, unlimited notes, sync across your devices, full thread history and export, hourly and 10-day forecasts, focus timers, shared tags and the large launcher widgets. It is shareable with your Family Sharing group. New installs get 30 days of everything to try first. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
HyBran
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HyBran is an Agentic AI notebook that helps you capture, organize, and remember what matters. Record ideas, import content, and let AI instantly turn them into notes, to-do lists, quizzes, and flashcards. Pin your most important information to your home screen for quick access, so your tasks, study materials, and reminders are always just a glance away. Capture Everything - Voice Notes: Record thoughts, ideas, and reminders instantly wherever you are. - Live Transcription: Turn your voice into searchable text in real time. - Import Documents: Upload images, text files, and other content to build your personal knowledge base. - Save Important Information: Keep everything you learn, create, and discover in one place. Chat With Your Knowledge - AI Knowledge Chat: Ask questions across your notes, recordings, and documents. - Instant Answers: Find insights without manually searching through pages of information. - Explore Ideas: Connect related thoughts and discover new perspectives from your own knowledge. Transform Information Into Notes - AI Notes: Automatically create clear, structured notes from your sources. - Summaries: Extract key points from long documents, conversations, and recordings. - Flashcards & Quizzes: Convert your knowledge into powerful learning tools. - Action Items: Identify important tasks and next steps automatically. Turn Ideas Into Action - AI To-Do Lists: Generate tasks from your notes, conversations, and ideas. - Smart Organization: Keep projects, plans, and reminders organized. - Quick Access: Pin important information for instant access whenever you need it. Your Personal Knowledge Hub HyBran helps you build a living library of everything that matters. Whether you’re learning something new, preparing for a meeting, capturing a sudden idea, or organizing daily tasks, HyBran keeps your knowledge connected and ready when you need it. Capture more. Remember more. Do more with AI. Terms: https://docs.google.com/document/d/e/2PACX-1vSv3FSxmjWgDf7kdJhlj2_hRkHApPQLJkTEKP36nGbUVPPdeM3YKQNgPI_UhsY14nRlIa_S9cphcWNx/pub
Screenshots
Verdict
The clearest difference is iOS requirement: HyBran at 16.0 against Sebastian Assistant's 18.0. On price, update cadence, ads and in-app purchases 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.
Sebastian Assistant ships an update every 2 days, HyBran every 4 days. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.
| Parameter | Sebastian Assistant | HyBran |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 days — better | Every 4 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Surratt | Turing Intelligence |
In-app purchases
Sebastian Assistant
No in-app purchases
HyBran
No in-app purchases





