Comparison

Physical Constants vs ATomicall

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

ATomicall

Read full description

ATmoicall vereint zwei Funktionen in einer App. Zum einen dient sie als Periodensystem der Elemente für die Tasche mit allen wichtigen Informationen zu den jeweiligen Elementen. Zum anderen ist es ein Simulationswerkzeug für Orbitale von Atomen. Durch die Visualisierung der Orbitale erhält der Nutzer ein Verständnis für das Orbitalmodell und die damit verbundene wahrscheinliche Lage der Elektronen.

Screenshots

Physical Constants2 screens

ATomicall3 screens

Verdict

The call

The clearest difference is ads: ATomicall at none against Physical Constants's shown. ATomicall 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, ATomicall every 3 weeks. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level

Physical Constants versus ATomicall: the parameters behind the verdict, then further details
Parameter	Physical Constants	ATomicall
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 — better	iPhone, iPod
Requires iOS	12.0	11.0 — better
Further details — not scored
Size	25 MB	128 MB
Age rating	4+	4+
Developer	Takuya Ishikawa	In2Bit GbR

In-app purchases

None

Physical Constants

No in-app purchases

None

ATomicall

No in-app purchases

Questions

Is Physical Constants free?

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

Is ATomicall free?

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

Do Physical Constants or ATomicall have ads?

Physical Constants shows ads; ATomicall does not.

Which is updated more often, Physical Constants or ATomicall?

Physical Constants ships an update every 9 months, and ATomicall every 3 weeks. Most recently, Physical Constants was updated on October 2, 2026 and ATomicall on October 7, 2026.