Comparison

Geometry Quick Reference vs CiNii Research, KAKEN, IRDB

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

Head to head
About

Geometry Quick Reference

Features
Read full description

Geometry Quick Reference is a basic information tool for middle school and high school level geometry students. It provides a simple way to access and review the basic concepts of geometry. Here are a few of the ways you will use Geometry Quick Reference everyday with your students: β€’ Geometry Quick Reference as an informational tool to help students understand and review basic concepts of Geometry, including the basic concepts, lines and planes, area, perimeter, parts of a circle, solids (volume), Cartesian coordinates and the right triangle including basic trigonometric functions, and more. β€’Tap the areas of the screen to bring up more detailed information and explanations about essential geometric concepts. β€’Tap to the question mark icon to activate a quiz and test understanding of terms and concepts.

About

CiNii Research, KAKEN, IRDB

This app provides a comprehensive search interface for academic literature, research data, and project information. It aggregates data from numerous databases, offering a free and unified platform for researchers and librarians. Access a vast collection of scholarly materials and research activities.

Highlights
  • Cross-search academic literature
  • Access research data
  • Find project information
  • Utilizes CiNii APIs
  • Free to use
  • Incorporates multiple databases
Features
Read full description

It's a CiNii Research search app. All features are completely free to use. URL scheme: research:// Note: - This app uses CiNii APIs. - This app is run by an individual and has nothing to do with CiNii. - For inquiries, please use the form in this app. --- * About CiNii Research The National Institute of Informatics (NII) has been providing CiNii as a platform for researchers and librarians to search for bibliographic information. As the concept of open science becomes more widespread in recent years, however, other types of information as well as literature tend to be made public, including research data, project information, and other information related to research activities. In response to this trend, we launched CiNii Research. CiNii Research is a simple interface that allows you to easily cross-search not only literature, but also research data from external collaborating institutions and institutional repositories, and other sources including research project data on KAKEN. Quoted from: https://support.nii.ac.jp/en/cir/manual_outline * Incorporated Databases - Japan Link Center - Institutional Repository Database - The Japanese Periodicals Index - National Diet Library Digital Collections - Crossref - Ichushi Web - Nikkei BP Magazine Archive - Japanese Agricultural Sciences Index - IPS Digital Library - JSAI Archives - AIJ Archives - CiNii Articles - CiNii Books - CiNii Dissertations - DataCite - JDCat - National Institute for Japanese Language and Linguistics - The Informatics Research Data Repository - DBpedia - Rikkyo University Data Archive - Database of Grants-in-Aid for Scientific Research - Database of Grants-in-Aid for Scientific Research (Researchers) Quoted from: https://support.nii.ac.jp/en/cir/cir_db * CiNii CiNii is a bibliographic database service for material in Japanese academic libraries, especially focusing on Japanese works and English works published in Japan. The database was founded in April 2005 and is maintained by the National Institute of Informatics. The service searches from within the databases maintained by the NII itself [NII Electronic Library Service (NII-ELS) and Citation Database for Japanese Publications (CJP)], as well as the databases provided by the National Diet Library of Japan, institutional repositories, and other organizations. The database contains more than 22 million articles from more than 3,600 publications. A typical month (in 2012) saw more than 30 million accesses from 2.2 million unique visitors, and is the largest and most comprehensive database of its kind in Japan. Although the database is multidisciplinary, the largest portion of the queries it receives is in the humanities and social sciences field, perhaps because CiNii is the only database that covers Japanese scholarly works in this field (as opposed to the natural, formal, and medical sciences which benefit from other databases). Quoted from: https://en.wikipedia.org/wiki/CiNii

Screenshots

CiNii Research, KAKEN, IRDB4 screens

Verdict

The call

The clearest difference is price: CiNii Research, KAKEN, IRDB at Free against Geometry Quick Reference's $0.99. CiNii Research, KAKEN, IRDB also leads on update cadence (every 3 months vs every 37 months). Geometry Quick Reference's advantage is ads (none vs shown) and iOS requirement (12.0 vs 26.0). On in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

CiNii Research, KAKEN, IRDB is free to download; Geometry Quick Reference costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Geometry Quick Reference ships an update every 37 months, CiNii Research, KAKEN, IRDB every 3 months. The most recent releases landed on May 16, 2026 and September 6, 2026 respectively.

Scorecard4 real differences Β· 4 level
Geometry Quick Reference versus CiNii Research, KAKEN, IRDB: the parameters behind the verdict, then further details
ParameterGeometry Quick ReferenceCiNii Research, KAKEN, IRDB
Price$0.99Free β€” better
Positive reviewsβ€”0.0% of reviews
Update frequencyEvery 37 monthsEvery 3 months β€” better
AdsNo β€” betterYes
In-app purchasesNoNo
Monetizationβ€”Ad-supported
DevicesiPadiPhone, iPad β€” better
Requires iOS12.0 β€” better26.0
Further details β€” not scored
Size7 MB11 MB
Age rating4+17+
DeveloperVentura Educational SystemsFugaPiyo Inc.

In-app purchases

None

Geometry Quick Reference

No in-app purchases

None

CiNii Research, KAKEN, IRDB

No in-app purchases

Questions

Is Geometry Quick Reference free?
Geometry Quick Reference costs $0.99, with no in-app purchases.
Is CiNii Research, KAKEN, IRDB free?
CiNii Research, KAKEN, IRDB is free to download, with no in-app purchases.
Do Geometry Quick Reference or CiNii Research, KAKEN, IRDB have ads?
CiNii Research, KAKEN, IRDB shows ads; Geometry Quick Reference does not.
Which is updated more often, Geometry Quick Reference or CiNii Research, KAKEN, IRDB?
Geometry Quick Reference ships an update every 37 months, and CiNii Research, KAKEN, IRDB every 3 months. Most recently, Geometry Quick Reference was updated on May 16, 2026 and CiNii Research, KAKEN, IRDB on September 6, 2026.

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