HiMemo vs Nidus Notes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Nidus Notes
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Nidus Notes is a spatial- and time-aware note-taking application. It allows users to create and organize notes linked to specific locations, times, and channels. Notes can include text content, categories, and tags, with support for recurring and range-based time contexts. The app operates offline-first and synchronizes when connectivity is available. Users can view notes in a list ordered by relevance to current time and location. Notes are versioned, preserving a history of edits. Nidus Notes is designed for fieldwork and data collection, providing structured, contextualized information capture.
Screenshots
Verdict
The clearest difference is update cadence: Nidus Notes at every 2 days against HiMemo's every 19 months. HiMemo's advantage is iOS requirement (13.0 vs 18.0). 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.
HiMemo ships an update every 19 months, Nidus Notes every 2 days. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.
| Parameter | HiMemo | Nidus Notes |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 19 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 30 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroyuki Kawai | Gleipnir LLC |
In-app purchases
HiMemo
No in-app purchases
Nidus Notes
No in-app purchases









