KnowTree vs 忘れ物ゼロ
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/
忘れ物ゼロ
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Forgot Nothing helps you check what to bring before leaving. Use ready-made templates for work, school, travel, gym, and hospital visits, or create your own list. Set morning and pre-departure notifications, then review items like your wallet, keys, and phone before you go.
Screenshots
Verdict
The clearest difference is in-app purchases: 忘れ物ゼロ at none against KnowTree's 1. KnowTree's advantage is iOS requirement (15.1 vs 17.0). On price, ads and device support 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. 忘れ物ゼロ asks for nothing beyond the download.
| Parameter | KnowTree | 忘れ物ゼロ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days | — |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 51 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Ukon Ryohei | satoshi amasaki |
In-app purchases
KnowTree
- KnowTree Premium$4.99
忘れ物ゼロ
No in-app purchases









