# Capacities vs UBBLU Capacities records 339,396 monthly visits with +5.7% month-over-month growth and Freemium, Paid pricing. UBBLU records 2,794 monthly visits with +13.5% growth and Free pricing. | Metric | [Capacities](https://openaitools.app/tool/capacities) | [UBBLU](https://openaitools.app/tool/ubblu) | | :--- | :--- | :--- | | Website URL | https://capacities.io | https://ubblu.com | | Categories | AI Note Taker, AI Assistant, AI Knowledge Management | AI Note Taker, AI Knowledge Management, AI Knowledge Base, AI Assistant | | Pricing Model | Freemium, Paid | Free | | Monthly Visits | 339,396 | 2,794 | | MoM Growth Rate | +5.7% | +13.5% | | Primary Market | United States | United States | | Direct Visits | 249,603 | 1,099 | | Review Score | 4.5 | 4.2 | | Saved Count | 1 | 4 | | Supported Platforms | Website | Website | ## Capacities Capacities starts from a simple observation: the way most tools organize information — nested folders and files — does not match how people actually think. The app replaces that hierarchy with objects. A person is an object, a book is an object, a project is an object, and each one has its own structure and properties. Because everything can link to anything, your notes build a network rather than a filing cabinet. Writing starts in a daily note that acts as an inbox, so there is no pressure to file things immediately. From there you create the object types you actually need and link them as you go. Backlinks show every connection to a note at a glance, and a Related Content feature surfaces places where you wrote about something but never made the link explicit — connections you had already made, found automatically. Capacities runs on web, macOS, Windows, Linux, iOS and Android, and works offline with synchronisation across devices. The core note-taking product is free, with paid Pro and Believer tiers that add AI features, whiteboards, task management, smart queries, calendar integration, media analysis and version history. The team is small, fully remote and independently funded. **Pricing & Plans:** Freemium. Capacities Basic is free forever with unlimited spaces, objects and blocks. Capacities Pro is $9.99/month and adds AI features, whiteboards, tasks, smart queries and calendar integration; Capacities Believer starts at $12.49/month and adds beta access to new features. A Plus AI add-on increases the monthly AI budget. Yearly billing is discounted. - **Everything is an object:** Model people, books, projects and meetings as typed objects with their own properties, instead of forcing them into folders. - **Backlinks and related content:** See every link to a note at a glance, and let Capacities surface unlinked mentions where you already wrote about the same thing. - **Daily notes as an inbox:** Capture thoughts without deciding where they belong first, then link and refine them later. - **AI assistant and media analysis:** On paid plans, an AI assistant works alongside your notes, and image, PDF and weblink analysis turns outside material into usable content. - **Works across all your devices:** Native apps for web, Mac, Windows, Linux, iOS and Android with synchronisation and offline support. **Strengths:** Object-based model removes the friction of constant filing decisions; Related Content surfaces connections you never explicitly linked; Free tier is genuinely usable, with full import and export; Native apps on all major platforms, including Linux **Limitations:** Some of the most useful features — AI, tasks, calendar — sit behind the Pro subscription; Not a Markdown-first, plugin-extensible tool, which limits fine-grained customization; AI usage is budget-based, so heavy AI users need the Plus add-on [Profile (Markdown)](https://openaitools.app/tool/capacities.md) ## UBBLU UBBLU is built around a simple promise: search less, create more. Rather than treating notes as a filing cabinet you have to sort and remember, it treats them as a memory you can query. You capture ideas, inspirations, meeting notes, and key facts on the way in, and let the app handle recall on the way out. The structure is deliberately lightweight. Quick Notes capture fleeting thoughts, while Cards hold longer, more developed ideas and build into a richer knowledge base. Tags link and categorize notes and cards so related material stays connected, and folders, pins, and reminders keep the things you use most within reach. The headline feature is 'Ask', which spans notes, cards, folders, and tags: you pose a question and UBBLU brings back the relevant information instantly, so you never have to hunt for where you filed something. UBBLU also reaches beyond what you type. You can upload documents, ask questions about their contents, and save the insights back as notes. Grouping content under a tag lets UBBLU generate detailed answers and surface insights from the connected material. It is designed for thinkers who value creation over searching - the company's own framing. Sign-up is free with no credit card required. Note that UBBLU currently describes itself as desktop-only, with a mobile version announced as coming soon, so check device support before committing. **Pricing & Plans:** Free. UBBLU offers free sign-up with no credit card required for its core AI-driven note-taking and retrieval experience. - **Ask search across everything:** Ask a question in plain language and UBBLU pulls the answer from across your notes, cards, folders, and tags instead of making you scroll. - **Notes and structured cards:** Capture fleeting thoughts as quick notes and develop longer ideas as structured Cards that build into a knowledge base. - **Tags, folders, pins, and reminders:** Organize with tags and folders, pin the items you use most, and set reminders so deadlines and follow-ups do not slip. - **Connected discovery and insights:** UBBLU links related concepts and generates detailed answers and insights from the content grouped under a tag. - **Uploaded document interaction:** Upload documents, ask questions about them, and store the answers as notes for later retrieval. **Strengths:** Ask-based retrieval removes the need to remember where notes are filed; Lightweight structure of notes, cards, and tags is quick to adopt; Document upload with Q&A extends it beyond typed notes; Free to sign up with no credit card required **Limitations:** Currently desktop-only, with the mobile app still listed as coming soon; The public site is fairly minimal, so some details require signing up to see; Positioned as a newer product, so the ecosystem of integrations has room to grow; Note-taking habits are personal, and switching tools has a real learning curve [Profile (Markdown)](https://openaitools.app/tool/ubblu.md) ## Frequently Asked Questions ### How do Capacities and UBBLU compare in monthly traffic? Capacities has 339,396 monthly visits, while UBBLU has 2,794. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? Capacities has a month-over-month growth rate of +5.7%; UBBLU has +13.5%. ### How does pricing compare? Capacities: Freemium, Paid. Freemium. Capacities Basic is free forever with unlimited spaces, objects and blocks. Capacities Pro is $9.99/month and adds AI features, whiteboards, tasks, smart queries and calendar integration; Capacities Believer starts at $12.49/month and adds beta access to new features. A Plus AI add-on increases the monthly AI budget. Yearly billing is discounted. UBBLU: Free. Free. UBBLU offers free sign-up with no credit card required for its core AI-driven note-taking and retrieval experience. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [Notion AI](https://openaitools.app/tool/notion-ai) | 13,460,455 | +13.4% | Freemium, Paid, Contact for Pricing | Your always-on AI teammate inside the Notion workspace | [.md](https://openaitools.app/tool/notion-ai.md) | | 2 | [Otter AI](https://openaitools.app/tool/otter-ai) | 7,360,981 | +9.6% | Freemium | AI meeting agent that transcribes, summarises, and turns every conversation into searchable knowledge | [.md](https://openaitools.app/tool/otter-ai.md) | | 3 | [Knowt](https://openaitools.app/tool/knowt-com) | 4,183,953 | +5.4% | Free | Free AI flashcard and study tools for students | [.md](https://openaitools.app/tool/knowt-com.md) | | 4 | [Craft](https://openaitools.app/tool/craft-do) | 703,417 | +8.9% | Freemium | Delivers a cleaner document editing experience with beautiful typography, but lacks network graph views and typed object modeling. | [.md](https://openaitools.app/tool/craft-do.md) | | 5 | [ThetaWave AI](https://openaitools.app/tool/thetawave-ai) | 526,384 | +6.8% | Freemium | Turn any lecture, file, or video into notes, flashcards, and quizzes | [.md](https://openaitools.app/tool/thetawave-ai.md) | | 6 | [Noteey](https://openaitools.app/tool/noteey) | 230,694 | -1.6% | Freemium | Offline visual note-taking on an infinite canvas | [.md](https://openaitools.app/tool/noteey.md) | | 7 | [Saner.AI](https://openaitools.app/tool/saner-ai-beta-version) | 184,423 | -0.6% | Freemium | ADHD-friendly AI assistant for notes, email and tasks | [.md](https://openaitools.app/tool/saner-ai-beta-version.md) | | 8 | [Heptabase](https://openaitools.app/tool/heptabase) | 179,905 | -5.8% | Free Trial, Paid | Offers superior visual whiteboarding and spatial structuring for complex research, but lacks Capacities' typed object database system. | [.md](https://openaitools.app/tool/heptabase.md) | | 9 | [Fabric](https://openaitools.app/tool/fabric) | 168,987 | +2.7% | Freemium | Your files, notes and meetings in one drive — with an AI that knows all of it. | [.md](https://openaitools.app/tool/fabric.md) | | 10 | [Mem.ai](https://openaitools.app/tool/mem-ai) | 137,457 | -1.2% | Freemium, Paid | An AI notes app that organizes your knowledge for you | [.md](https://openaitools.app/tool/mem-ai.md) | --- Source: https://openaitools.app/compare/capacities-vs-ubblu More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)