Physical Constants vs AngularQM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Physical constants database
- Categorized by topic
- Search functionality
- Multi-language support
- User feedback for corrections
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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).
AngularQM
This app helps quantum mechanics physicists quickly obtain matrix representations of angular momentum operators. It calculates matrices for J squared, the z component of J, and ladder operators for chosen total angular momentum values.
- Matrix representation of angular momentum operators
- Calculates J squared matrices
- Calculates Jz component matrices
- Calculates ladder operator matrices (J+, J-)
- Supports various total angular momentum values (j)
- Visualizes matrix representations
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AngularQM is an application for physicists working in quantum mechanics. It allows quickly obtain the matrix representation of the operators involved in the construction of angular momentum in quantum mechanics. Once the total angular momentum of the quantum system under consideration has been chosen (j = 1/2, j = 1, j = 2, etc.) it is possible to calculate the matrices associated with the operator J squared and the z component of operator J. It is also possible to calculate and visualize the matrix representations of the ladder operators: J + and J-.
Screenshots
Verdict
The clearest difference is price: Physical Constants at Free against AngularQM's $4.99. Physical Constants also leads on update cadence (every 9 months vs every 49 months) and ratings volume (3 vs 1). AngularQM's advantage is rating (5.0 vs 3.3) and ads (none vs shown). On 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
Physical Constants is free to download; AngularQM costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
AngularQM holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Physical Constants ships an update every 9 months, AngularQM every 49 months. The most recent releases landed on August 24, 2026 and July 4, 2026 respectively.
| Parameter | Physical Constants | AngularQM |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 3.3 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 9 months — better | Every 49 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 26.4 |
| Further details — not scored | ||
| Size | 25 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Ishikawa | Gabriel Raffa |
Customer experience
Physical Constants
AngularQM
In-app purchases
Physical Constants
No in-app purchases
AngularQM
No in-app purchases
Questions
Is Physical Constants free?
Is AngularQM free?
Which has better reviews, Physical Constants or AngularQM?
Do Physical Constants or AngularQM have ads?
Which is updated more often, Physical Constants or AngularQM?
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