Formula MAX vs DrPhos' Ionic Compounds
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Formula MAX
Access over 1100 physics, chemistry, and math formulas with a powerful search and offline access. Save favorites, use built-in calculators, and view a detailed periodic table. Designed for user convenience and quick reference.
- 1100+ formulas, definitions, and values
- Offline access
- Powerful search function
- Favorites for quick access
- Trigonometric and logarithmic calculators
- Periodic table with element details
Read full descriptionHide full description
Formula MAX is a universal app with a collection of over 1100+ Physics, Chemistry and Maths formulas, more formulas to be added constantly through updates. Use your Formula MAX app across your iOS devices with exclusive device based UI, with just one purchase. The app is designed with a view of user convenience in searching, locating & referring a formula. Topics covered: Maths – Algebra, Analytical geometry, Complex numbers, Differential calculus, Differential equations, Discrete mathematics, Geometry, Integral calculus, Matrices, Mensuration, Modern Algebra, Set language, Statistics, Time series, Trigonometry, Vector algebra Physics – Atomic physics, Dynamics of Rotational motion, Electricity, Electromagnetic induction and Altering current, Electronics, Gravitation & space science, Heat, Hydrostatics, Light, Magnetism, Measurement, Mechanics, Mechanics of solids and fluids (Properties of matter), Nuclear physics, Relativity, Solar planets, Sound Chemistry – Atomic structure, Chemical bonding, Chemistry & its division, Common names & Chemical names, Important definitions, Organic chemistry, Periodic classification, Physical chemistry, States of matter Features - Huge data base of 1100+ formulas, definitions, values - Option to email the pages - Powerful search function to locate formulas - Store formulas in favorites for quick access - Trigonometric value calculator - Logarithmic value calculator - Periodic table with details about all elements - Simple and easy user interface - All the features are available offline
DrPhos' Ionic Compounds
This app helps students learn and practice forming correct chemical formulas for ionic compounds. It supports a wide range of ions, including polyatomic ones, and dynamically generates formulas with proper subscripts and parentheses. It's designed to reinforce naming rules and charge balancing through an interactive interface.
- Extensive cation and anion list
- Support for polyatomic ions
- Real-time formula generation
- Subscript and parenthesis formatting
- Reinforces naming rules
- Charge balancing practice
Read full descriptionHide full description
Master Ionic Compounds with Ease The Ionic Compound Builder helps students learn and practice forming correct chemical formulas using a wide range of cations and anions—including polyatomic ions. Simply select a cation and an anion, and the app dynamically generates the proper formula with correct subscripts and parentheses. Designed for high school and college chemistry students, this tool reinforces naming rules and charge balancing through an intuitive, interactive interface. Features: • Extensive built-in list of common cations and anions • Support for monoatomic and polyatomic ions • Real-time chemical formula generation • Proper use of subscripts and parentheses • Visual formatting to emphasize structure and charge Whether you’re learning ionic bonding for the first time or reviewing for an exam, this tool is an essential companion for mastering chemical formulas.
Screenshots
Verdict
The clearest difference is in-app purchases: Formula MAX at none against DrPhos' Ionic Compounds's 11. Formula MAX also leads on ratings volume (52 vs 8) and iOS requirement (13.0 vs 17.0). DrPhos' Ionic Compounds's advantage is update cadence (every 3 weeks vs every 11 months) and review sentiment (100% vs 80%). On price, rating, ads and monetization model 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
Formula MAX costs $0.99 and DrPhos' Ionic Compounds $0.99 up front. DrPhos' Ionic Compounds sells 11 one-off in-app purchases. Formula MAX asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Formula MAX against 4.9 for DrPhos' Ionic Compounds. That said, the two scores are not equally well evidenced: Formula MAX has 52 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 80% of Formula MAX's written reviews are positive against 100% of DrPhos' Ionic Compounds's.
Formula MAX ships an update every 11 months, DrPhos' Ionic Compounds every 3 weeks. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.
| Parameter | Formula MAX | DrPhos' Ionic Compounds |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.8 (52 ratings) | 4.9 (8 ratings) — better |
| Positive reviews | 79.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 52 — better | 8 |
| Update frequency | Every 11 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 15 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Mallow Technologies Private Limited | Monte L Helm |
Customer experience
Formula MAX
DrPhos' Ionic Compounds
Bugs and requests
Formula MAX
Reported bugs
7 issues- Search function returns no results for some queries
- Display glitches preventing information from showing
- Inconsistent symbology and notation within sections
- Spacing errors in text
- App crashes or performance issues
Show 2 moreShow fewer
- Periodic table difficult to navigate and view
- Slow performance in some instances
Requested features
15 requests- Add worked examples demonstrating formula application
- Include interactive calculators for solving problems
- Provide step-by-step solution walkthroughs
- Add more advanced chemistry topics (thermodynamics, quantum mechanics, etc.)
- Include visual diagrams and illustrations
Show 10 moreShow fewer
- Allow users to add custom equations and formulas
- Add unit conversions and conversion calculators
- Implement full-screen periodic table view
- Include more astrophysics and advanced physics formulas
- Add ability to copy formulas to clipboard
- Provide French language version
- Add more algebra and basic mathematics topics
- Include variable input fields for formula calculations
- Add explanatory notes and definitions
- Improve search methodology and organization
DrPhos' Ionic Compounds
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Formula MAX
No in-app purchases
DrPhos' Ionic Compounds
- Ionic Compound BuilderFree
- Science Calculator$0.99
- Significant Figures Counter$0.99
Show 8 moreShow fewer
- Quadratic Equation Solver$0.99
- Kinetics$0.99
- Molar Mass Calculator$0.99
- Naming Compounds$0.99
- Reaction Balancer$0.99
- Stoichiometry$0.99
- Solution Concentrations$0.99
- pH Calculator$0.99
Questions
Is Formula MAX free?
Is DrPhos' Ionic Compounds free?
Which has better reviews, Formula MAX or DrPhos' Ionic Compounds?
Do Formula MAX or DrPhos' Ionic Compounds have ads?
Which is updated more often, Formula MAX or DrPhos' Ionic Compounds?
Other comparisons















