Comparison

Math Dictionary Offline vs Photronium

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

Head to head
About

Math Dictionary Offline

Access a comprehensive collection of mathematical terms and definitions without an internet connection. This free application allows you to search for specific words alphabetically or by using the built-in search tool. It's ideal for students and anyone needing quick math reference on the go.

Highlights
  • Offline access
  • Extensive math vocabulary
  • Completely free
  • Alphabetical listing
  • Search tool
Features
Read full description

Math Dictionary Offline explains more than 4,400 mathematics terms, and works without an internet connection. Arithmetic, algebra, geometry, trigonometry, calculus and statistics, in short definitions for school and university students and for parents helping with homework. LOOK UP • 4,400+ entries in alphabetical order • Tap any linked term inside an entry to open it • Search that forgives spelling mistakes, accents and punctuation, and can also search inside the entries • Hear the headword read aloud (American or British voice) • Bookmarks and history LEARN • Flashcards with spaced repetition: what you find hard comes back sooner • Multiple-choice quiz • Ready-made decks to start with, or study your own bookmarks • Word of the day, with an optional morning notification COMFORTABLE • Works offline: everything is on your device • Light and dark mode, three text sizes • iPhone and iPad The app is free and shows ads. A one-time purchase removes them. The definitions are short explanations for study and general information.

About

Photronium

Access over 360 physics equations with clear explanations and powerful search tools. Test your knowledge with custom quizzes and learn offline anywhere, anytime. This educational reference is designed for learners of all levels.

Highlights
  • 360+ physics equations
  • Offline access
  • Intelligent Search
  • Symbol Search
  • Customizable quizzes
  • Bookmarking
Read full description

With over 360 physics equations explained in a clear, easy-to-understand way and a flexible search system, Photronium can be an immensely helpful tool for learners of any level. PHYSICS AT YOUR FINGERTIPS Look up any physics equation, with topics including: • Motion in One Dimension • Projectile Motion • Laws of Motion • Uniform Circular Motion • Work and Energy • Linear Momentum and Collisions • Rotation of Rigid Bodies • Universal Gravitation • Fluid Mechanics • Oscillatory Motion • Wave Motion • Sound Waves • Thermodynamics • Electromagnetism • Light and Optics • Relativity • Quantum Physics All available offline, so you can learn anywhere, anytime. MEMORY QUIZ Test your knowledge by taking quizzes! Bookmark any section that interests you, and Photronium will automatically create quizzes based on those bookmarks. INTELLIGENT SEARCH & SYMBOL SEARCH Just type anything. Intelligent Search can work with the most ambiguous descriptions, like “atom”, “lens”, “radiation”, “Newton”, and “phase angle”. And when you need to find a physics formula without any description, Symbol Search provides a discovery experience you’ve never seen before. FREE & NO ADS Photronium comes with over 360 physics equations, Intelligent Search, Symbol Search, Widgets, Bookmarks, Suggested Websites, and Dark Mode all available for free and ad-free. With Extras, you can purchase more features and support the app’s development. Have questions or feedback? From the app, open Extras and send a report.

Screenshots

Math Dictionary Offline4 screens
Photronium4 screens

Verdict

The call

The clearest difference is review sentiment: Photronium at 100% against Math Dictionary Offline's 50%. Photronium also leads on rating (5.0 vs 4.0) and ads (none vs shown). Math Dictionary Offline's advantage is monetization model (free vs free with in-app purchases). 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. Math Dictionary Offline sells 1 one-off in-app purchase and Photronium sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Photronium holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Photronium has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Math Dictionary Offline's written reviews are positive against 100% of Photronium's.

UpkeepUpdate frequency

Math Dictionary Offline ships an update every 60 months, Photronium monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Math Dictionary Offline versus Photronium: the parameters behind the verdict, then further details
ParameterMath Dictionary OfflinePhotronium
PriceFreeFree
Rating4.0 (2 ratings)5.0 (10 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings210 — better
Update frequencyEvery 60 monthsMonthly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.4
Further details — not scored
Size9 MB59 MB
Age rating4+4+
DeveloperAndrew PutrantoHao Nguyen

Customer experience

Math Dictionary Offline

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Photronium

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Math Dictionary Offline

One-time1
  • Remove Ads$4.99
1 purchases

Photronium

One-time1
  • Multicolored Bookmarks$0.99

Questions

Is Math Dictionary Offline free?
Math Dictionary Offline is free to download, with in-app purchases available.
Is Photronium free?
Photronium is free to download, with in-app purchases available.
Which has better reviews, Math Dictionary Offline or Photronium?
Photronium is rated higher. Math Dictionary Offline averages 4.0 out of 5 from 2 ratings, while Photronium averages 5.0 from 10 ratings.
Do Math Dictionary Offline or Photronium have ads?
Math Dictionary Offline shows ads; Photronium does not.
Which is updated more often, Math Dictionary Offline or Photronium?
Math Dictionary Offline ships an update every 60 months, and Photronium monthly. Most recently, Math Dictionary Offline was updated on November 6, 2026 and Photronium on November 3, 2026.

Other comparisons