OutlineProcessor vs HiMemo2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OutlineProcessor
This app helps you organize thoughts and ideas with a simple yet powerful outliner. Create nested lists, manage multiple projects, and use intuitive controls to structure essays, novels, or tasks. Its clean interface minimizes distractions for focused thinking.
- Infinite hierarchy for nested lists
- Intuitive controls for reordering items
- Multiple document management
- Focus-oriented minimalist interface
- Idea capture and development
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Bring structure to your thoughts. This app is a simple yet powerful outliner designed to help you capture, organize, and develop your ideas. Whether you're plotting a novel, structuring an essay, planning a project, or managing daily tasks, it's the perfect tool to bring clarity to your thinking. Key Features: Infinite Hierarchy: Create deeply nested lists to explore your ideas in as much detail as you need. Intuitive Controls: Effortlessly move, indent, and reorder items with a single tap, allowing you to restructure your thoughts on the fly. Multiple Documents: Keep your work organized by managing different projects in separate files. Focus-Oriented Design: A clean, minimalist interface frees you from distractions, letting you concentrate on what truly matters—your ideas. Transform scattered thoughts into a coherent plan. Download now and start organizing your mind with ease and clarity.
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.
- 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
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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
Verdict
The clearest difference is review sentiment: HiMemo2 at 100% against OutlineProcessor's 20%. HiMemo2 also leads on in-app purchases (none vs 1) and update cadence (monthly vs every 59 months). On price, ads 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. OutlineProcessor sells 1 one-off in-app purchase. HiMemo2 asks for nothing beyond the download.
OutlineProcessor ships an update every 59 months, HiMemo2 monthly. The most recent releases landed on September 3, 2026 and September 10, 2026 respectively.
| Parameter | OutlineProcessor | HiMemo2 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (4 ratings) — better | — |
| Positive reviews | 20.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 59 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 17.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | hirokazu murabe | Hiroyuki Kawai |
Customer experience
OutlineProcessor
HiMemo2
In-app purchases
OutlineProcessor
- Hide Advertisement$2.99
HiMemo2
No in-app purchases









