KnowTree vs Notes Den
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KnowTree
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◆ Organize notes in a "hierarchy" — and everything becomes clearer With most note-taking apps, as information piles up, it becomes hard to see how things are connected. "KnowTree" organizes your notes hierarchically with parent-child relationships. Group related information together so you can always find it again. --- ◆ Key Features [Tree Structure] Create nodes with parent-child relationships. Organize like "Main Topic → Subtopic → Details." No limit on how deep you can go. [Flexible Workflow] Start from the big picture (top-down), or jot down small notes and group them later (bottom-up) — both approaches work great. [Rich Content] Supports Markdown, images, links, and code blocks. Create notes that are clear and easy to read. --- ◆ Great For • Systematically organizing what you've learned • Structuring reading notes to match a book's outline • Managing project information in a hierarchy • Organizing your thoughts before writing • Connecting scattered notes into a coherent structure --- ◆ Features [Basic] • Create, edit, and delete nodes • Organize nodes with parent-child relationships • Markdown support • Search across all nodes • Trash (recover accidentally deleted notes) [Data Management] • Create and restore backups • Import data [Premium] • Create multiple trees • Ad-free experience • Premium color themes • Add images within note content • Export nodes • Home screen widget *Available with a Premium subscription (monthly) --- ◆ About Premium Plan Unlock all features with a monthly subscription. • Remove ads for a distraction-free experience • Access more color themes • Manage multiple trees for different purposes • Add images directly to your notes • Export in Markdown format • Quick access from your home screen You can cancel your subscription at any time. --- EULA (Apple Standard License Agreement) This app is subject to the Apple Media Services Standard End User License Agreement (Standard EULA). Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use Use of this app is subject to the following terms: KnowTree Terms of Use: https://uconpa.com/chishikinoki/terms/ Privacy Policy For information on how we handle user data: KnowTree Privacy Policy: https://uconpa.com/chishikinoki/privacypolicy/
Notes Den
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Notes Den is a fast, local-first markdown notebook for ideas, tasks, files, and connected notes. Write with live markdown, organize notes into folders, connect ideas with wiki-links, find context with backlinks and tags, and keep attachments alongside your notes. Everything works offline on your device first. When you sign in, Notes Den can sync notes, folders, and attachments through your account so your workspace follows you. Features: - Local-first notes backed by on-device storage - Live markdown editing with checklists, headings, code, quotes, and formatting - Wiki-links, backlinks, tags, and fast search - Folder organization with quick switching - Attachments for photos, PDFs, and files - Optional cloud sync with account sign-in - Optional end-to-end encrypted sync for note and attachment content - Import/export tools for keeping your notes portable Notes Den is built for simple, focused note taking without ads or tracking.
Screenshots
Verdict
The clearest difference is in-app purchases: Notes Den at none against KnowTree's 1. Notes Den also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement 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. KnowTree sells 1 one-off in-app purchase. Notes Den asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | KnowTree | Notes Den |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days | Every 9 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 51 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Ukon Ryohei | Den Digital LLC |
In-app purchases
KnowTree
- KnowTree Premium$4.99
Notes Den
No in-app purchases









