iSup vs Chem Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSup
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The Orthofix iSup mobile app is restricted to Orthofix Extremities Sales Representatives and Certified Distributors. It makes it easy for users to find and quickly view and share files of Orthofix products’ support materials, pictures, videos and presentations. Request for obtaining access to the app can be managed within the app. Orthofix values your feedback. If you would like to make a suggestion about how we can improve this app, please let us know at appsupport@orthofix.it ABOUT US Since 1980, Orthofix has evolved and grown to become one of the leading medical device companies focused on musculoskeletal products and therapies in the world. Above all else, Orthofix is dedicated to improving patients’ lives through superior reconstruction and regenerative spine and extremity solutions. Founded in Verona, Italy, and currently headquartered in Lewisville, Texas, Orthofix has two strategic business units – Orthofix Spine and Orthofix Extremities – with cutting-edge products that are distributed in more than 70 countries worldwide. Orthofix is dedicated to developing, manufacturing and distributing our diverse product lineup that empowers surgeons to meet the needs of their patients every day.
Chem Calc
This app provides a comprehensive suite of tools for chemistry calculations, including equation balancing, molar mass computation, and gas law solutions. It features an interactive periodic table and works offline for most functions, making it ideal for students and professionals.
- Interactive Periodic Table with element properties
- Reaction search and automatic equation balancing
- Molar mass calculator with detailed breakdown
- pH and Acid–Base calculations
- Ideal Gas Law solver
- Concentration and dilution tools
- Calculation history and unit converter
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Chem Calc is a powerful and easy-to-use chemistry calculator for students, teachers, and professionals. It helps you solve chemical problems, balance equations, and perform accurate calculations — both online and offline. Most features work offline. Internet access is required only for reaction search. Key Features Interactive Periodic Table Explore all chemical elements with detailed properties: - atomic number and atomic mass - electron configuration - electronegativity - atomic radius and oxidation states - standard state and physical properties Tap any element to view full information. Reaction Search and Equation Balancer - Search for common inorganic and organic reactions - Automatic equation balancing - Correct stoichiometric coefficients - Support for complex formulas and brackets Molar Mass Calculator Calculate molar mass for any valid chemical formula (for example: C6H12O6, Fe2O3, KMnO4). - detailed element breakdown - support for nested brackets - crystal hydrates (CuSO4·5H2O) - pH and Acid–Base Calculations - pH calculation for acids and bases - concentrations of H⁺ and OH⁻ - support for weak acids and bases using pKa / pKb Gas Laws and Ideal Gas Calculator Solve problems using the ideal gas equation PV = nRT. - pressure, volume, temperature, amount of substance - automatic unit conversion (Pa, atm, mmHg, L, mL, K, °C) Concentration and Dilution Tools - molarity, molality, normality - mass fraction and volume fraction - dilution and solution mixing calculations Calculation History All recent calculations are saved so you can quickly return to previous results. Unit Converter Convert: - mass, volume, amount of substance - concentration units - number of particles (Avogadro’s number) Change units without re-entering values. Why Choose Chem Calc - Accurate and reliable data based on standard chemistry references - Clean and intuitive interface - Works offline for most calculations - Suitable for school, university, and laboratory use Regular updates with new features and improvements Download Chem Calc and keep all essential chemistry calculations in one app — no paper tables or external references needed. Follow updates: https://t.me/chemcalc_en Privacy Policy: https://www.notion.so/Privacy-Policy-204d504d7d5a80218d28dee6633990d5?source=copy_link Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: iSup at none against Chem Calc's 3. iSup also leads on iOS requirement (14.0 vs 26.0). Chem Calc's advantage is update cadence (every 8 days vs every 6 months). On price, ads and 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
Both are free to download. Chem Calc sells 3 in-app purchases, starting at $1.99 per month. iSup asks for nothing beyond the download.
iSup ships an update every 6 months, Chem Calc every 8 days. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.
| Parameter | iSup | Chem Calc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 36 MB | 76 MB |
| Age rating | 17+ | 4+ |
| Developer | Orthofix Srl | Fanis Kalimullin |
In-app purchases
iSup
No in-app purchases
Chem Calc
- Pro subscription (1 Month)$1.991 Month
- Premium Yearly (1 year)$19.991 Year
- Premium$5.99









