TagNote vs Obius
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TagNote
This app offers a flexible, tag-based approach to note-taking, moving beyond traditional folder structures. Organize meeting notes, ideas, and web clippings with multiple tags per note, and connect your thoughts to build a personal knowledge network. It features a rich text editor and reminders for important dates.
- Unlimited tags per note
- Rich text editor with formatting
- Birthday and anniversary reminders
- Tag-based knowledge network
- Minimalist and distraction-free design
- iCloud data synchronization
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TagNote is available for Mac, iPhone, and iPad, and syncs data via iCloud. Meeting notes, lecture summaries, web clippings, and sudden ideas— Are you losing track of what truly matters in the chaos of scattered information? [TagNote] is a tag-based note-taking app that breaks free from the limitations of traditional folder structures. Assign multiple tags to a single note and organize your thoughts flexibly. Connect ideas, discover patterns, and gain new insights through your very own knowledge network. Key Features of TagNote #1. Unlimited Tags, Effortless Organization Say goodbye to rigid folders. Add as many tags as you need—like Work, Ideas, or Books—to each note. Easily manage and retrieve notes across multiple themes with just a few keywords. #2. Powerful Yet Simple Editor Use the toolbar at the top of each note to apply rich text formatting, insert code blocks, add images, and create checklists. Capture your ideas vividly with an editor that’s both flexible and intuitive. #3. Birthday & Anniversary Reminders Keep track of important dates like birthdays and anniversaries. Attach meaningful notes to each occasion to preserve memories and emotions that matter. #4. A New Way to Connect Knowledge Tags create a web of related notes, helping you uncover hidden links between ideas. Visualize your thoughts like a map and explore unexpected insights as you build your personal knowledge network. #5. Minimal, Beautiful Design Focus on your content with a clean, distraction-free interface. We designed TagNote to make the process of writing and organizing notes both delightful and efficient. Download [TagNote] now and discover the smartest way to navigate the sea of information. Let your thoughts flow, connect, and grow with the power of tags. This app follows Apple’s Standard End User License Agreement (EULA). https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Obius
This app offers a visual workspace for organizing notes and ideas. It allows for reusable content blocks, color-coded sections for intent, and AI-powered features for content generation and semantic search. It prioritizes privacy with local-first storage and end-to-end encryption.
- Visual workspace for notes and ideas
- Reusable content blocks (Loops)
- Color-coded sections by intent
- AI-powered content generation and search
- Version history and snapshots
- Offline functionality and end-to-end encryption
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Obius — Notes that evolve. Designed for the way you think. Your ideas don't arrive in straight lines. Obius is a visual workspace where notes carry color, ideas connect to each other, and what you wrote yesterday folds into what you're building today. Built for founders, PMs, designers, researchers — and anyone who outgrew Apple Notes but never quite fit into Notion. LOOPS — WRITE ONCE, REUSE EVERYWHERE Drop a Loop into any note — a named, reusable content block like @launch_checklist or @weekly_review. Edit it in one place, every copy updates instantly. Perfect for running lists, shared context, and anything you reference more than once. SECTIONS THAT CARRY MEANING Every section has an intent — a color that tells you at a glance what kind of thinking lives there. Open ideas, questions you're sitting with, work in motion, issues to fix, things that are done. Five colors. Five intents. Your thinking, visible. — Drag and drop to reorder — Collapse, expand, and nest sections — Rich content: text, checklists, code, quotes, images, audio — Tap once to change a section's intent ECHOES — REMINDERS THAT BRING THE NOTE BACK Attach a time-based reminder to any Loop. Unlike calendar pings, an Echo resurfaces the full note when the moment matters — with all its context intact, not a one-line nag. OBIUS INTELLIGENCE AI that lives inside the workspace, not in another tab. — Generate full pages from a single prompt — Edit, rewrite, and refine content in place — no copy-pasting between apps — Smart titles that actually describe the page — Semantic search that finds ideas, not just keywords — Research context: pull what you need, paste, and think from there INSIGHTS THAT SURFACE WHAT MATTERS Obius watches your pages for patterns so you don't have to. Cleanup suggestions, related notes you forgot about, lists hiding in your text, and safety flags for leaked credentials or secrets. VERSION HISTORY, BUILT IN Every note quietly snapshots itself. Browse the timeline, restore any earlier version, watch your thinking evolve over time. No save button. No lost work. SHARE LIVE OR FROZEN Generate a short public link to share a live note that updates as you edit — or freeze a snapshot in time. Readable URLs. View counts. Comments optional. CALENDAR See your work across time. Plan ahead, look back, stay oriented — without leaving Obius. LOCAL-FIRST. PRIVATE BY DEFAULT. — Pages stored on your device first — Works fully offline; syncs when you reconnect — End-to-end encrypted sync — No tracking. No selling data. Not now, not ever. — Optional local-only mode for maximum privacy YOUR MIND. YOUR ARCHITECTURE. Obius isn't another notes app. It's a workspace shaped like thinking — simple enough to start in seconds, deep enough to grow with how you actually work. Designed for the way you think. Terms of Use (EULA): https://docs.google.com/document/d/e/2PACX-1vRq_bt_Z_V7ci7lS3hHLzq4QjRrDFJsJu6Ab-oedeeSakGPGcx_dJlG3EDAzdetptd21GPyEtzTxKbg/pub Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vRbJ9cYTWnyQSYeL8JrTOizC0eC-f8rhoicqh3GttTDIrbNlesR-_auwkFz2OLsTTzguDG3YLtzwnEY/pub
Screenshots
Verdict
TagNote and Obius are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. TagNote sells 3 in-app purchases, starting at $1.99 per month and Obius sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
TagNote ships an update every 5 days, Obius weekly. Both last shipped on November 5, 2026.
| Parameter | TagNote | Obius |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 5 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 18.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonggyou Kim | DAED LLC |
Customer experience
TagNote
Obius
In-app purchases
TagNote
- Monthly subscription7 Days trial$1.991 Month
- 3-month subscription7 Days trial$3.993 Months
- Annual subscription7 Days trial$9.991 Year
Obius
- Obius Pro Founder$4.991 Month
- Obius Pro Monthly$9.991 Month
- Pro Annual$79.991 Year
- Power Pack$9.99









