# Chemical Equation Toolbox > Balances and calculates chemical equations with handwriting input and local saving. (iPhone/iPad app by Bian Jiang.) - Source: https://appshunter.io/ios/app/chemical-equation-toolbox/id424479918 (this page in markdown: same URL + `.md`) - Developer: [Bian Jiang](https://appshunter.io/developer/1449806712) - Category: Education, Productivity - Price: Free - Rating: 1.70/5 from 3 App Store ratings · 22 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 6 MB - Languages: American English, Chinese (Simplified, China) - Released: 2011-03-14 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/chemical-equation-toolbox/id424479918/reviews.md ## What is Chemical Equation Toolbox? View basic usage demonstration at (or click "Reviews" -> "App Support"): http://www.masterginger.com/cet/cet.htm A handy tool for chemical equation balancing and calculation. Features: - Intuitive and flexible user interface for chemical equation input including handwriting input. - Auto-complete partial chemical equation. - Automatic balancing during input. - Calculate the amount of each reactant in a balanced chemical equation. - Chemical equations can be saved in the local equation library. - Support ionic equation. - Support crystal chemical equation. ## Key features - Handwriting input for chemical equations - Auto-complete partial equations - Automatic balancing during input - Calculate reactant amounts - Save equations to local library - Support ionic and crystal equations ## Recent user reviews (10 of 22) All indexed reviews: https://appshunter.io/ios/app/chemical-equation-toolbox/id424479918/reviews.md ### 4/5 — Chemical equation balance saves time *2021-12-09, version 1.7.7* Pop in your reactants & products & the stoichiometric values are calculated quickly & a screen save allows you to paste the reaction into your text. An significant improvement would be to add the heat of formation. ### 1/5 — Don't even bother *2017-04-24* Doesn't auto finish equation or balance them properly. Not worth it ### 4/5 — great app *2015-03-03, version 1.7.6* Very useful if you know the formulas you are looking to balance. Would be better if it could automatically recognise formulas and potentially auto complete them (maybe that's just me being lazy though). ### 1/5 — Usless *2014-07-02* This app will not give the resultant products. It is not intuitive to use and there is no instructions on how to use it. Once I figured out how to input the elements for an equation with three reactants, the app would not give me the results. Dom't waste your money on this one. ### 1/5 — Horrible.!! *2013-12-03* It's confusing in every way.!!! Mine always starts on the right of the arrow.! They need to fix this.!!! ### 1/5 — Worst 2$ I ever spent *2012-10-19* Don't buy this!!! It's doesn't work , the only reason y I got it is to balance the equation and it doesn't do it! ### 1/5 — What crap *2012-07-21* Is not intuitive in the least and does seem to be missing any sort of directions on how molecules should be input!! Horrid ### 1/5 — Doesn't work *2012-05-01* There is no calculate icon so it is worthless don't buy it ### 1/5 — Rubbish *2012-04-06, version 1.1* App doesn't work as it only allows equations to be manually inputed. Only equations listed give full App functionality. Support website doesn't work either. Don't waste your money or time with this one. ### 5/5 — Nice app! *2012-03-01, version 1.1* The way to input chemical equation is intuitive. I like the periodic table and the chemical calculator! ## Frequently asked questions about Chemical Equation Toolbox ### What is the main function of Chemical Equation Toolbox? Chemical Equation Toolbox is designed to help users balance chemical equations automatically and calculate the amounts of reactants involved. It features an intuitive interface that supports handwriting input and auto-completion for partial equations. ### Can I save my chemical equations with Chemical Equation Toolbox? Yes, Chemical Equation Toolbox allows you to save your chemical equations in a local equation library. This feature is useful for keeping track of frequently used or complex equations for future reference. ### Does Chemical Equation Toolbox support different types of chemical equations? Yes, Chemical Equation Toolbox supports both standard chemical equations, as well as ionic equations and crystal chemical equations. This broad support makes it a versatile tool for various chemistry applications. ### How does Chemical Equation Toolbox handle equation balancing? The app provides automatic balancing as you input the chemical equation, making the process efficient and user-friendly. It also offers auto-complete functionality for partial equations, further streamlining the input process. ### What devices is Chemical Equation Toolbox compatible with? Chemical Equation Toolbox is available for iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating system. ### How often is Chemical Equation Toolbox updated? The latest version of Chemical Equation Toolbox is 1.7.7, which was last updated on April 11, 2017. The app was initially released on March 14, 2011. ### Is Chemical Equation Toolbox suitable for younger students? Chemical Equation Toolbox has an age rating of 4+, indicating it is suitable for a wide range of users. Its straightforward functionality can be beneficial for students learning basic chemistry principles. ### Does Chemical Equation Toolbox have ads? No, Chemical Equation Toolbox does not contain advertisements. The app is free to download and use without any ad interruptions. ## Version history (last 5 releases) ### 1.7.7 — 2017-04-11 This app has been updated by Apple to display the Apple Watch app icon. Rebuild the application to comply with App Store requirements. ### 1.7.6 — 2014-04-27 Small bug fixes. ### 1.7.5 — 2014-02-11 Add the support for coordination complexes, e.g. [Cu(H2O)4]{2+}+NH3=[Cu(NH3)4]{2+}+H2O ### 1.7.3 — 2014-01-17 Fix issues on iOS 5.x 1. Landscape mode in auto-complete view. 2. Crash issue in input pad. ### 1.7.2 — 2014-01-13 Add "rate this app" feature. ## Apps similar to Chemical Equation Toolbox | App | Rating | Price | Category | | --- | --- | --- | --- | | [IPL Farmer Samvad](https://appshunter.io/ios/app/ipl-farmer-samvad/id6443671580) | — | Free | Education | | [Redação Nota 1000 ENEM](https://appshunter.io/ios/app/redacao-nota-1000-enem/id1671597780) | — | Free | Education | | [Memorization:Spaced Repetition](https://appshunter.io/ios/app/memorizationspaced-repetition/id6443955900) | — | Free | Education | | [FG Crypto \| Community & Guides](https://appshunter.io/ios/app/fg-crypto-community-and-guides/id1630377140) | 4.8 (904) | Free | Education | | [lehramt.app](https://appshunter.io/ios/app/lehramtapp/id6443501440) | — | Free | Education | | [Мой ЧувГУ](https://appshunter.io/ios/app/id6443413620) | 3.1 (13) | Free | Education | ## More apps by Bian Jiang - [Pocket Water Zen](https://appshunter.io/ios/app/pocket-water-zen/id6752424508) All apps by Bian Jiang: https://appshunter.io/developer/1449806712 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*