Comparison

calcMod vs Physics Master

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

Head to head
About

calcMod

Features
Read full description

What are all the digits of the factorial of 69 and how many digits ? What is the gogol number ? How many integers of the form 10^n+1 are prime ? (like 101) Want to know if a big integer is prime ? The change mod function indicates when the number is prime. Want to know the divisors of an integer ? A prime divisor has no inverse modulo this integer. This is a modulo calculator overpowering almost limitless! (only display is limited !) With modulo gogol, calculus are exact until 100 digits ! The "n!" button calculates the factorial of an integer from 0 to 2000. Factorial are limited to factorial of 2000. The "change modulo" (change modulo) function indicates when the modulo is prime. There are no limit to the modulo except the display. The "modulo gogol" button set a modulo to 10^100 (gogol number). You can stoke one number and recall it when you want. The "Mod" operation indicates the residue modulo N. The "pow" function allow modular exponentiation (as + - *) The "INV" function calculates the inverse of an integer modulo N. This app is intended for both mathematics teachers and/or their students, or if you are interested in the beauty of numbers. Enjoy calcMod-Blk ! Les commentaires sont disponibles en français (réglages).

About

Physics Master

This app aids high school and undergraduate students in learning physics. It offers key concepts, formulas, practice questions with solutions, tutorial videos, and simulations to enhance understanding and problem-solving skills.

Highlights
  • Key physics concepts and formulas
  • Practice and challenge question solutions
  • Tutorial videos
  • Quiz questions with feedback
  • Physical process simulations
  • Progress tracking
Features
Read full description

This App aims to help high school and undergraduate students with their Physics education. The App lists key Physics concepts and formula that students need to master, provides practice and challenge question solutions, tutorial videos, and let students practice a lot of quiz questions along with feedbacks for enhancing physics problem-solving skills. The App can also simulate various physical processes to enhance your understanding of Physics concepts. If you think the App is useful for your study, please consider subscribing to our service, for which the standard Terms of Use applies. The details are in the following link: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.

Screenshots

calcMod4 screens
Physics Master4 screens

Verdict

The call

The clearest difference is price: Physics Master at Free against calcMod's $1.99. Physics Master also leads on update cadence (every 6 weeks vs every 36 months). calcMod's advantage is in-app purchases (none vs 11) and ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

Physics Master is free to download; calcMod costs $1.99 up front. Physics Master sells 11 in-app purchases, starting at $0.99 per month. calcMod asks for nothing beyond the download.

UpkeepUpdate frequency

calcMod ships an update every 36 months, Physics Master every 6 weeks. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

Scorecard5 real differences · 5 level
calcMod versus Physics Master: the parameters behind the verdict, then further details
ParametercalcModPhysics Master
Price$1.99Free — better
Rating—2.0 (1 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 36 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better17.6
Further details — not scored
Size1 MB86 MB
Age rating4+4+
DeveloperAlain CardinauxOptimization Lab LLC

In-app purchases

None

calcMod

No in-app purchases

11 purchases

Physics Master

Subscriptions4
  • Pro Level Monthly$0.991 Month
  • Pro Plus Level Monthly$1.991 Month
  • Pro Level Yearly$7.991 Year
Show 1 more
  • Super Plus Monthly$9.991 Month
One-time7
  • 100 Reward Points$0.99
  • 200 + Bonus 10 Reward Points$1.99
  • 300 + Bonus 20 Reward Points$2.99
Show 4 more
  • 400 + Bonus 30 Reward Points$3.99
  • 500 + Bonus 40 Reward Points$4.99
  • 600 + Bonus 50 Reward Points$5.99
  • 1000 + Bonus 100 Reward Points$9.99

Questions

Is calcMod free?
calcMod costs $1.99, with no in-app purchases.
Is Physics Master free?
Physics Master is free to download, with in-app purchases available.
Do calcMod or Physics Master have ads?
Physics Master shows ads; calcMod does not.
Which is updated more often, calcMod or Physics Master?
calcMod ships an update every 36 months, and Physics Master every 6 weeks. Most recently, calcMod was updated on October 3, 2026 and Physics Master on September 29, 2026.

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