Physical Constants vs Physics Questions
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).
Physics Questions
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Best tool for school or college for practising all those physics questions! This app will help you to learn about the different concepts in physics. With separate modules for each subject area, you can practice: ---> Electricity ---> Electronics ---> Electromagnetism ---> Force & Energy ---> Motion ---> Optics ---> Radioactivity & Thermodynamics ---> Special Relativity ---> Waves & Particles At the press of a button, you can be prompted with the correct formula as well as being shown the worked solution. Want a feature to be added? Let me know at apps@sionnagh.com
Screenshots
Verdict
The clearest difference is in-app purchases: Physical Constants at none against Physics Questions's 9. Physics Questions's advantage is update cadence (every 4 days vs every 9 months). On price, ads, 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
Both are free to download. Physics Questions sells 9 one-off in-app purchases. Physical Constants asks for nothing beyond the download.
Physical Constants ships an update every 9 months, Physics Questions every 4 days. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.
| Parameter | Physical Constants | Physics Questions |
|---|---|---|
| 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 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 25 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Ishikawa | Michael Todd |
In-app purchases
Physical Constants
No in-app purchases
Physics Questions
- Electricity Questions$1.99
- Electronics Questions$1.99
- Electromagnetism Questions$1.99
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- Force & Energy Questions$1.99
- Motion Questions$1.99
- Optics Questions$1.99
- Radioactivity & Thermodynamics$1.99
- Special Relativity Questions$1.99
- Waves & Particles Questions$1.99
Questions
Is Physical Constants free?
Is Physics Questions free?
Do Physical Constants or Physics Questions have ads?
Which is updated more often, Physical Constants or Physics Questions?
Other comparisons
