zOutline vs HiMemo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
zOutline
This is a simple outline editor that allows for easy creation and management of hierarchical lists. It supports multiple outlines in tabs, text formatting, and various export options like HTML, RTF, and plain text. The app remembers your progress and allows sharing via email attachments.
- Simple tap and gesture controls
- Multiple outlines in tabs
- Text formatting (bold, italic, underline)
- Export to HTML, RTF, and text
- Email attachment sharing
- Persistent editing state
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A straightforward, uncomplicated outline editor. You tap an item to select. You double-tap to edit an item. You swipe left on an item to delete an item.. Or you tap-and-hold to cut & paste, etc. Multiple outlines can be edited at once in different tabs. zOutline remembers what you were editing even if you kill the app. You can send outline files as email attachments, and open outline file attachments. zOutline permits export as HTML, RTF or text. Outline items can be enumerated or dotted. Items can be bold, italic, underlined. Several fonts and text colors are available.
HiMemo
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For example, information that has a hierarchical structure, such as information linked to regions or division of organization, that is, information that has multiple children dangling from a parent and overlaps with grandchildren and grandchildren. Is unexpectedly large. Usually, such information is recorded in a memo application in bullet points, but adding and editing information is surprisingly troublesome, and there was a problem that the hierarchical relationship collapses if careless. With HiMemo, you can record information hierarchically with simple operations, and you can also add or modify. It is also possible to export to other apps and SNS in a tree view mode that gives a bird's eye view of the whole, or in plain text format or HTML format.
Screenshots
Verdict
The clearest difference is update cadence: zOutline at every 3 weeks against HiMemo's every 19 months. HiMemo's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
zOutline ships an update every 3 weeks, HiMemo every 19 months. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.
| Parameter | zOutline | HiMemo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 30 MB |
| Age rating | 17+ | 4+ |
| Developer | Zack Smith | Hiroyuki Kawai |
In-app purchases
zOutline
No in-app purchases
HiMemo
No in-app purchases









