Comparison

Tree Notebook vs HiMemo2

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

Head to head
About

Tree Notebook

Organize personal information with a hierarchical notes manager. Structure data into a tree-like hierarchy of folders and notes, with options for public and encrypted private sections. Features include powerful search, customizable item appearance, and event reminders.

Highlights
  • Tree-like hierarchical organization
  • Public and encrypted private data sections
  • Attachments (images, files)
  • Multiple data views (tree, list, favorites, history)
  • Powerful search capabilities
  • Customizable item appearance
  • Event reminders and calendar
Features
Read full description

Tree Notebook is a hierarchical notes manager designed for keeping personal information. Tree Notebook runs on an iOS device (iPhone or iPad). Besides, there is a counterpart for OS Windows which can be synchronized with up to three iOS devices via a local Wi-Fi network. No access to Internet is needed for synchronizing. The data in Tree Notebook is divided in two parts: the public part accessible without password and the encrypted private part which requires password for opening. The data in every part is arranged as a tree-like multilevel hierarchy of folders and notes. Any folder can include notes and other folders, and so fourth. Any item (a note or a folder) can include text of any size. The items can keep attachments like images or other files. The app can represent data in several ways: as a tree, as a list of items (folders and notes) on the current level, as a list of manually selected items ("Favorites"), or the items visited recently ("History"). The contents of an individual item can be viewed or edited. Tree Notebook includes powerful search facilities: simplified or conditional global search, local search inside an item text. The items can be sorted by several criteria: alphabetically, by creation or modification time, and in manually defined order. The item titles can be attributed using a variety of font types, colored flags, graphic icons. Any item can have an Event attribute and serve as an alarm clock or reminder. A calendar feature is available to help managing events. The app is free to use both on iOS devices and desktop PC.

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.

Screenshots

Tree Notebook4 screens
HiMemo24 screens

Verdict

The call

The clearest difference is update cadence: HiMemo2 at monthly against Tree Notebook's every 25 months. On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Tree Notebook ships an update every 25 months, HiMemo2 monthly. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

Scorecard1 real difference · 9 level
Tree Notebook versus HiMemo2: the parameters behind the verdict, then further details
ParameterTree NotebookHiMemo2
PriceFreeFree
Rating4.4 (5 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings5 — better—
Update frequencyEvery 25 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS15.6 — better16.0
Further details — not scored
Size12 MB2 MB
Age rating4+4+
DeveloperLena PankratovaHiroyuki Kawai

Customer experience

Tree Notebook

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%

HiMemo2

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Tree Notebook

No in-app purchases

None

HiMemo2

No in-app purchases

Questions

Is Tree Notebook free?
Tree Notebook is free to download, with no in-app purchases.
Is HiMemo2 free?
HiMemo2 is free to download, with no in-app purchases.
Do Tree Notebook or HiMemo2 have ads?
Neither Tree Notebook nor HiMemo2 shows ads.
Which is updated more often, Tree Notebook or HiMemo2?
Tree Notebook ships an update every 25 months, and HiMemo2 monthly. Most recently, Tree Notebook was updated on September 30, 2026 and HiMemo2 on September 29, 2026.

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