Periodic Table vs Proportion Solver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Periodic Table
Explore the universe's language with this interactive chemistry app. It offers a clear, visual, and fact-based approach to understanding elements, isotopes, and chemical reactions. Ideal for students, educators, and curious minds.
- Interactive Periodic Table
- Detailed Element Cards
- 3300+ Isotopes
- Molar Mass Calculator
- Chemistry Dictionary
- Reactions & Equations
- Solubility Chart & Orbital Models
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▶ Why should you install this? Chemistry isn’t school torture — it’s the language of the universe. And if you still think chemistry is just boring tables, meaningless equations, and endless memorization, then no one ever really showed it to you the right way. This app makes chemistry clear. Useful. Beautiful. No boring lectures. No confusing terms. No ads. Just facts, visuals, and respect for your time. ▶ Who is it for? For students — to understand, not just memorize. For university learners — to save time and stress. For teachers — to keep everything essential within reach. For chemists — to stop dealing with outdated, clunky websites. For anyone curious about how the world really works. ▶ Why you’ll love it • Interactive Periodic Table — flexible layout, filters, and color themes. • Detailed Element Cards — from atomic data to symmetry and radioactivity. • 3300+ Isotopes — searchable, filterable, and presented clearly. • Molar Mass Calculator — handles even the most complex formulas. • Chemistry Dictionary — short, precise, human-readable definitions. • Reactions & Equations — with clear conditions and explanations. • Favorites, notes, and comparison tools to organize your knowledge. • Solubility chart, orbital models, graphs, and visual symmetry tools. Everything you need — from the classroom to the lab. Chemistry isn’t a dry science — it’s the language of matter. And now, that language fits in your pocket — complete with all the glossaries and data about our universe.
Proportion Solver
This app provides step-by-step solutions for mathematical proportions. It's designed for students and math enthusiasts to learn, practice, and simplify calculations with an intuitive interface and theoretical resources.
- Automatic proportion solving with steps
- Theory cards for understanding
- Advanced math keyboard
- Intuitive interface
- Integrated learning
- Supports all proportion types
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Turn your device into the perfect math study companion. "Proportion Solver" is the ultimate app that guides you through solving proportions, helping you understand the logic behind the numbers and always get the right results. Here's everything our app can do for you: ▶ STEP-BY-STEP SOLUTIONS Get the solution in an instant. But we don't stop at the final result: the app shows you all the logical steps in detail to find the unknown in simple or continuous proportions, whether with whole numbers, fractions, or decimals. It's the perfect tool to understand your mistakes, learn the correct method, and get fully prepared for homework and exams. ▶ PROPORTIONS WITH SUM AND DIFFERENCE The app includes a dedicated section exclusively for solving proportions that feature sums or differences. The system automatically applies the addition and subtraction properties, clearly showing you the entire process to reach the result without any confusion. ▶ INTEGRATED MATH KEYBOARD Use our dedicated interface, designed to be incredibly simple and intuitive. Easily type the unknown, fractions, repeating decimals, and parentheses smoothly and quickly, having only the keys you truly need right at your fingertips. ▶ THEORY AND RULES ALWAYS AT HAND Having a memory lapse? Review fundamental principles, the fundamental property of proportions, and solving methods right in the app. Everything you need to know about the topic is in one place. ▶ CLEAN INTERFACE AND DARK THEME No complications. The UI is simple, intuitive, and includes an elegant dark theme, specifically optimized to prevent eye strain during your evening study sessions. ▶ GUARANTEED RELIABILITY Our algorithms are tested and highly optimized to ensure accurate and instant calculations every time, even for the most complex proportions. ▶ CONSTANT UPDATES AND SUPPORT The app is regularly updated to always offer you the best performance and new features. Download "Proportion Solver" today and take your math skills to the next level!
Screenshots
Verdict
The clearest difference is rating: Periodic Table at 4.8 against Proportion Solver's 3.0. Periodic Table also leads on ads (none vs shown) and update cadence (every 6 days vs every 6 weeks). Proportion Solver's advantage is in-app purchases (none vs 11). On price, 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. Periodic Table sells 9 in-app purchases, starting at $0.99 per month. Proportion Solver asks for nothing beyond the download.
Periodic Table holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Periodic Table has 5.4K ratings behind it against 2, so its average is the more settled of the two.
Periodic Table ships an update every 6 days, Proportion Solver every 6 weeks. The most recent releases landed on October 29, 2026 and October 5, 2026 respectively.
| Parameter | Periodic Table | Proportion Solver |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5.4K ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 88.2% of reviews | — |
| Number of ratings | 5.4K — better | 2 |
| Update frequency | Every 6 days — better | Every 6 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 152 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Nikita Chernykh | Francesco Varotti |
Customer experience
Periodic Table
Proportion Solver
Bugs and requests
Periodic Table
Reported bugs
2 issues- Widget shows incorrect element positions
- Electron configuration information missing for some elements
Requested features
5 requests- Add Arabic language support
- Improve search functionality
- Allow full periodic table view
- Add pronunciation for element names
- Include more physical constants and data
Proportion Solver
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Periodic Table
- Professional: 1 Month$0.991 Month
- Professional: 6 Months2 variants$3.996 Months
- Professional: 6 Months7 Days trial$3.996 Months
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- Professional: 1 Year2 variants$6.991 Year
- Professional: 1 Year7 Days trial$6.991 Year
- Professional: 1 Year$14.991 Year
- Professional: Unlimited$14.99
- Professional: Unlimited$24.99
- Professional: Unlimited$59.99
Proportion Solver
No in-app purchases
Questions
Is Periodic Table free?
Is Proportion Solver free?
Which has better reviews, Periodic Table or Proportion Solver?
Do Periodic Table or Proportion Solver have ads?
Which is updated more often, Periodic Table or Proportion Solver?
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