Physical Constants vs Problem solver
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).
Problem solver
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If you have difficulties in solving physics problems regarding mechanics, the conservation of potential and kinetic energy, and collisions, this is the app for you! How it works: Just enter few data and this app solves the problem for you. But not only! "Physics problem solver: Mechanics and collisions", after solving the problem also says how you get to the solution! Features: Solves problems and also points out the process of these topics: -Mechanics and the principle of conservation of energy (kinetic and potential energy) -Elastic collisions -Perfectly inelastic collisions It is possible to enter even complex data, with functions such as cos(x), tan(x) in the fields and the Solver will calculate everything for you! You can also save the problems already solved, so you can consult them when you want with a click! Download now "Physics problem solver: Mechanics and collisions" for free!
Screenshots
Verdict
The clearest difference is iOS requirement: Problem solver at 8.0 against Physical Constants's 12.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Physical Constants ships an update every 9 months, Problem solver every 6 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Physical Constants | Problem solver |
|---|---|---|
| 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 6 months — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Ishikawa | Fabio Giuliani |
In-app purchases
Physical Constants
No in-app purchases
Problem solver
No in-app purchases
Questions
Is Physical Constants free?
Is Problem solver free?
Do Physical Constants or Problem solver have ads?
Which is updated more often, Physical Constants or Problem solver?
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