How do their growth rates compare?

Flexnote has a month-over-month growth rate of +113.1%; UBBLU has +13.5%.

How does pricing compare?

Flexnote: Freemium. Flexnote has a free plan with 3 whiteboards, 100 cards, core canvas features, and local storage. Pro and Lifetime plans unlock unlimited whiteboards, Flexnote AI smart-index points, and optional cloud sync; during promotional periods a Lifetime license has been offered at a discounted price. See the pricing page for current plans and point quotas. UBBLU: Free. Free. UBBLU offers free sign-up with no credit card required for its core AI-driven note-taking and retrieval experience.

What are alternatives to Flexnote and UBBLU?

Other tools in related categories include Miro, Notion AI, Otter AI, Knowt, Goodnotes.

Flexnote vs UBBLU — Traffic (41.02K vs 2.79K), Pricing & Verdict

Open AI Tools

Flexnote vs UBBLU — Traffic (41.02K vs 2.79K), Pricing & Verdict | Open AI Tools

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	Flexnote	UBBLU
Official Domain	myflexnote.com	ubblu.com
Pricing Model	Freemium	Free
Monthly Visits	41.02K (41,017)	2.79K (2,794)
MoM Traffic Delta	+21.77K (+113.1%)	+332 (+13.5%)
Primary Market & Share	🇨🇳 China (74.6%)	🇺🇸 United States (100%)
Direct Visits / mo	17.57K	1.1K
User Rating	4.4	4.2
Supported Platforms	Website	Website

Flexnote

Local-first visual note-taking on an infinite canvas with mind maps and knowledge-base AI

Infinite canvas with mind maps

Place cards anywhere on the canvas, then switch to mind-map or database views to see structure without reorganizing your notes.

PDF and video annotation

Highlight and annotate PDFs on the canvas and take timestamped notes on videos; highlights automatically become reference cards.

Knowledge-base AI

Semantic search, knowledge-base Q&A, and content retrieval find the right notes; chat works with your own model API key.

Local-first with your own cloud

Files live on your device by default and sync across devices through WebDAV, S3, OneDrive, or Baidu Netdisk — your credentials stay yours.

Strengths & Pros

+Local-first storage means notes stay on your device and work offline
+Combines infinite canvas, mind maps, and databases instead of splitting tools
+PDF and video annotation with automatic reference cards is rare in note apps
+Sync uses your own WebDAV, S3, or OneDrive accounts, so you keep control of data