Concentrations vs Chemistry Toolbox
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Concentrations
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Concentrations is a powerful chemical calculator designed for laboratory professionals who need fast, accurate concentration calculations in the field. Say goodbye to manual dilution factor calculations, density conversions, and purity adjustments. The Problem We Solve: Ever needed to prepare a 1M sulfuric acid solution, but your stock bottle only shows "98% w/w" with molecular weight and density? Concentrations does the complex math for you instantlyβjust input your stock solution data and get precise preparation instructions with a single tap. Key Features: Smart Dilution Calculator β Calculate dilution parameters from stock solutions or known molar concentrations with ease Comprehensive Concentration Types β Support for Molar, Normal, Molal, Mole Fraction, Mass Concentration, Volume Fraction, and more Simple Input, Powerful Results β Enter your compound's molecular weight, desired concentration, and volumeβConcentrations handles the rest Customizable Precision β Adjust decimal places in results to match your experimental requirements Localized Interface β Automatically adapts decimal indicators to your regional format Who It's For: Perfect for chemists, laboratory technicians, students, and researchers who need reliable concentration calculations without the hassle of manual computation. Stop fumbling with calculators and conversion tables. Get accurate results every time with Concentrations.
Chemistry Toolbox
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Features already available: β’ The BEST MOLECULAR MASS CALCULATOR, by symbol or group abbreviation e.g. K4Fe(CN)6.3H2O, AcOMe... β’ A periodic table, with element characteristics and a dynamic comparison table β’ Several calculation tools for solution preparation (dilution, molar mass, molar concentration and density), and converter β’ Solubility table β’ pH color indicators β’ NMR (proton, carbon, constants and multiplets) β’ Data on common solvents (polarity, elution strength, boiling point, density...) β’ pKa β’ Buffer solutions β’ Organic functions (amino acids, monosaccharides, aromatic compounds, alkanes) β’ Standard oxidation-reduction potentials β’ ...
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Verdict
The clearest difference is in-app purchases: Concentrations at none against Chemistry Toolbox's 2. Chemistry Toolbox's advantage is update cadence (daily vs every 3 months). On price, ads, device support and iOS requirement 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
Both are free to download. Chemistry Toolbox sells 2 one-off in-app purchases. Concentrations asks for nothing beyond the download.
Concentrations ships an update every 3 months, Chemistry Toolbox daily. The most recent releases landed on October 1, 2026 and October 19, 2026 respectively.
| Parameter | Concentrations | Chemistry Toolbox |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Daily β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone | iPhone, iPad β better |
| Requires iOS | 18.5 | 17.6 β better |
| Further details β not scored | ||
| Size | 7 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcal Casas Cartagena | Florent Breton |
In-app purchases
Concentrations
No in-app purchases
Chemistry Toolbox
- One month subscription$0.99
- Full app$4.99
Questions
Is Concentrations free?
Is Chemistry Toolbox free?
Do Concentrations or Chemistry Toolbox have ads?
Which is updated more often, Concentrations or Chemistry Toolbox?
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