Stoichiometry vs Geometry
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Stoichiometry
This tool helps balance chemical reactions and calculate molar masses, moles, and actual masses of reactants and products. It supports various formula formats and can identify limiting reagents. Data can be sent to another app for gas phase calculations.
- Balance chemical reactions
- Calculate molar masses
- Determine moles and actual masses
- Identify limiting reagents
- Supports various formula formats
- Integrates with Gas Phase Stoichiometry app
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Stoichiometry is an ultimate tool for balancing chemical reactions, finding molar masses, moles and actual masses of reactants and products based on their chemical formulas, stoichiometric coefficients and any quantitative data provided, that available on Apple Store for iOSΒ and Mac . It is enough to provide initial or final (after reaction accomplishment) mass or moles of one of the reaction component, to calculate all required and obtained masses and moles of all components. If data is available for several components, then limiting reagent will be found based on reaction stoichiometry. Molecular formula format: charge or unpaired electrons (in free radicals), if exist, must be provided as well, separated by coma: Na,+ ; R,: ; SO4,2- . Application supports state indexes: (g), (s), (l), (aq) β all are lowercase only, placed at the end of compound formula. App can send the data toΒ Gas Phase Stoichiometry app to further calculate pressures and volumes of gaseous compounds. Either moles or masses can be filled in, but if by mistake both are provided and they donβt match, then the moles value will have a preference. Component will be taken into consideration once the stoichiometric coefficient is provided for it. For balancing redox reactions please refer to Electrochemistry application. Further information and examples are provided at http://www.volard.wordpress.com.
Geometry
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The GeometrySolver is not just an app, its a canvas and a book too. This app not only solves the geometric shapes, it also teaches you the formulas related to each geometric shape as well as it draws the geometric shapes when solved. This app is designed by an engineer to the perfection with every details in mind. It calculates side, height, diagonals, apothem, diameter, radius, perimeter, circumference, area, lateral area, surface area, volume. Some shapes have a dedicated interactive tab to play around and draw those shapes of different dimensions. Each geometric shape has its corresponding formulas written beautifully in mathematical way. This is a perfect app for your kids to learn geometry interactively. Draw, solve, share the geometric shapes. Drawn/solved shapes are displayed with their properties (numeric values). The Solve tab of angle is dynamic and interactive. You can touch/drag on the surface to draw an angle or use the slider to draw an angle. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. There are so many common geometric shapes to learn from like square, circle, cylinder, cone, cuboid, pyramid, sphere and more There is also a Study page to help you with learning formulae related to many common geometric shapes. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!
Screenshots
Verdict
The clearest difference is price: Geometry at $1.99 against Stoichiometry's $2.99. Geometry also leads on iOS requirement (15.1 vs 17.1). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Stoichiometry costs $2.99 and Geometry $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stoichiometry ships an update every 2 months, Geometry monthly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | Stoichiometry | Geometry |
|---|---|---|
| Price | $2.99 | $1.99 β better |
| Positive reviews | 50.0% of reviews | β |
| Update frequency | Every 2 months | Monthly β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | β |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.1 | 15.1 β better |
| Further details β not scored | ||
| Size | 1 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Roman Volinsky | Om Prakash Chapagain |
In-app purchases
Stoichiometry
No in-app purchases
Geometry
No in-app purchases
Questions
Is Stoichiometry free?
Is Geometry free?
Do Stoichiometry or Geometry have ads?
Which is updated more often, Stoichiometry or Geometry?
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