Comparison

HiMemo vs Nidus Notes

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

Head to head
About

HiMemo

Features
Read full description

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.

About

Nidus Notes

Features
Read full description

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

HiMemo4 screens
Nidus Notes3 screens

Verdict

The call

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

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

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.

Scorecard2 real differences · 4 level
HiMemo versus Nidus Notes: the parameters behind the verdict, then further details
ParameterHiMemoNidus Notes
PriceFreeFree
Update frequencyEvery 19 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size30 MB6 MB
Age rating4+4+
DeveloperHiroyuki KawaiGleipnir LLC

In-app purchases

None

HiMemo

No in-app purchases

None

Nidus Notes

No in-app purchases

Questions

Is HiMemo free?
HiMemo is free to download, with no in-app purchases.
Is Nidus Notes free?
Nidus Notes is free to download, with no in-app purchases.
Do HiMemo or Nidus Notes have ads?
Neither HiMemo nor Nidus Notes shows ads.
Which is updated more often, HiMemo or Nidus Notes?
HiMemo ships an update every 19 months, and Nidus Notes every 2 days. Most recently, HiMemo was updated on October 8, 2026 and Nidus Notes on October 5, 2026.

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