Comparison

HiMemo2 vs KnowTree

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

HiMemo2

Organize information with a simple, hierarchical structure. Easily add, edit, and view data in a tree format, and export it to other apps. Syncs across Apple devices and is accessible on Apple Watch.

Highlights
  • Hierarchical data entry and management
  • Cross-device sync (iPhone, iPad, Mac)
  • Apple Watch browsing
  • Enhanced search functionality
  • Simple and intuitive UI
  • Plain text and HTML export
Read full description

An enhanced version of HiMemo, an easy and convenient hierarchical memo app, is now available! For example, there is a surprising amount of information that has a hierarchical structure, such as information linked to regions and organizational charts. Normally, such information is recorded in bulleted list format in the memo app, but adding or editing information is surprisingly troublesome. Inadvertently, problems such as breaking the hierarchical relationship will occur. With HiMemo2, information can be recorded hierarchically with a simple operation like bulleted list format, and it is easy to add or modify. It is also possible to display a tree that gives a bird's-eye view of the whole, and to export information to other apps and SNS in plain text format or HTML format. Features of HiMemo2. - You can easily enter and manage data with a hierarchical structure. - Share data between multiple iPhones, iPads, Macs (sync with the same Apple ID). - You can browse the data on your Apple Watch. The following functions have been enhanced and improved from HiMemo. - Data is synchronized with HiMemo. - Linked with Apple Watch. You can browse the data on your Apple Watch. - The search function has been enhanced, and you can now search across memos. - The UI is simpler and easier to understand. Data will be inherited from HiMemo, so if you are using iOS 15 or later, we recommend migrating to HiMemo2.

About

KnowTree

Features
Read full description

β—† Organize notes in a "hierarchy" β€” 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. --- β—† Key Features [Tree Structure] Create nodes with parent-child relationships. Organize like "Main Topic β†’ Subtopic β†’ 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) β€” both approaches work great. [Rich Content] Supports Markdown, images, links, and code blocks. Create notes that are clear and easy to read. --- β—† Great For β€’ Systematically organizing what you've learned β€’ Structuring reading notes to match a book's outline β€’ Managing project information in a hierarchy β€’ Organizing your thoughts before writing β€’ Connecting scattered notes into a coherent structure --- β—† Features [Basic] β€’ Create, edit, and delete nodes β€’ Organize nodes with parent-child relationships β€’ Markdown support β€’ Search across all nodes β€’ Trash (recover accidentally deleted notes) [Data Management] β€’ Create and restore backups β€’ Import data [Premium] β€’ Create multiple trees β€’ Ad-free experience β€’ Premium color themes β€’ Add images within note content β€’ Export nodes β€’ Home screen widget *Available with a Premium subscription (monthly) --- β—† About Premium Plan Unlock all features with a monthly subscription. β€’ Remove ads for a distraction-free experience β€’ Access more color themes β€’ Manage multiple trees for different purposes β€’ Add images directly to your notes β€’ Export in Markdown format β€’ 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/

Screenshots

HiMemo24 screens
KnowTree4 screens

Verdict

The call

The clearest difference is in-app purchases: HiMemo2 at none against KnowTree's 1. HiMemo2 also leads on ads (none vs shown) and device support (4 vs 2). KnowTree's advantage is update cadence (every 9 days vs monthly). On price and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. KnowTree sells 1 one-off in-app purchase. HiMemo2 asks for nothing beyond the download.

UpkeepUpdate frequency

HiMemo2 ships an update monthly, KnowTree every 9 days. The most recent releases landed on September 29, 2026 and September 24, 2026 respectively.

Scorecard4 real differences Β· 4 level
HiMemo2 versus KnowTree: the parameters behind the verdict, then further details
ParameterHiMemo2KnowTree
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyMonthlyEvery 9 days β€” better
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
MonetizationFreeβ€”
DevicesiPhone, iPad, Mac, Apple Watch β€” betteriPhone, iPod
Requires iOS16.015.1 β€” better
Further details β€” not scored
Size2 MB51 MB
Age rating4+4+
DeveloperHiroyuki KawaiUkon Ryohei

In-app purchases

None

HiMemo2

No in-app purchases

1 purchases

KnowTree

One-time1
  • KnowTree Premium$4.99

Questions

Is HiMemo2 free?
HiMemo2 is free to download, with no in-app purchases.
Is KnowTree free?
KnowTree is free to download, with in-app purchases available.
Do HiMemo2 or KnowTree have ads?
KnowTree shows ads; HiMemo2 does not.
Which is updated more often, HiMemo2 or KnowTree?
HiMemo2 ships an update monthly, and KnowTree every 9 days. Most recently, HiMemo2 was updated on September 29, 2026 and KnowTree on September 24, 2026.

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