Comparison

Physical Constants vs NGSM Mobile

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

Head to head

Physical Constants

Free

📚 Education

★ 3.33 ratingsView app →

About

Physical Constants

Access a comprehensive list of physical constants, organized by category for easy searching. This app supports all AppStore languages and allows users to report corrections via email.

Highlights

Physical constants database
Categorized by topic
Search functionality
Multi-language support
User feedback for corrections

Features

Read full description

Application that displays the physical constants. Classified by category, easy to search. Supports all languages in the AppStore. If you find something to be corrected, please send an E-mail (English or Japanese).

About

NGSM Mobile

Features

Read full description

NGSM Mobile est une application mobile dédiée aux établissements scolaires ayant déployé la version desktop web de NGSM pour la gestion complète administrative. NGSM Mobile est installée par les parents d'élèves, enseignants et/ou élèves pour avoir une visibilité sur les activités scolaires de l'élève. Vois sa note, ses cours son emploi du temps. NGSM Mobile permet aux parents d D'élèves de voir l'historique des paiements de frais d'inscription sans appeler l'établissement. NGSM Mobile permet aux parent d'élèves de faire un paiement digital des frais d'inscription de ses enfants sans se déplacer à l'établissement. NGSM Mobile facilite la vie aux parents et aux enseignants ainsi qu'aux élèves pour le niveau universitaire

Screenshots

Physical Constants2 screens

NGSM Mobile3 screens

Verdict

The call

The clearest difference is ads: NGSM Mobile at none against Physical Constants's shown. NGSM Mobile also leads on update cadence (every 3 weeks vs every 9 months). On price, in-app purchases, device support 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

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

Physical Constants ships an update every 9 months, NGSM Mobile every 3 weeks. The most recent releases landed on October 23, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level

Physical Constants versus NGSM Mobile: the parameters behind the verdict, then further details
Parameter	Physical Constants	NGSM Mobile
Price	Free	Free
Rating	3.3 (3 ratings) — better	—
Positive reviews	33.3% of reviews	—
Number of ratings	3 — better	—
Update frequency	Every 9 months	Every 3 weeks — better
Ads	Yes	No — better
In-app purchases	No	No
Monetization	Ad-supported	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0 — better	13.0
Further details — not scored
Size	25 MB	15 MB
Age rating	4+	17+
Developer	Takuya Ishikawa	NG System Technology

In-app purchases

None

Physical Constants

No in-app purchases

None

NGSM Mobile

No in-app purchases

Questions

Is Physical Constants free?

Physical Constants is free to download, with no in-app purchases.

Is NGSM Mobile free?

NGSM Mobile is free to download, with no in-app purchases.

Do Physical Constants or NGSM Mobile have ads?

Physical Constants shows ads; NGSM Mobile does not.

Which is updated more often, Physical Constants or NGSM Mobile?

Physical Constants ships an update every 9 months, and NGSM Mobile every 3 weeks. Most recently, Physical Constants was updated on October 23, 2026 and NGSM Mobile on October 13, 2026.