# Molarity Abacus

> Chemistry calculator for molarity, volume, mass, and molecular weight. (iPhone/iPad app by Oak Driven LLC.)

- Source: https://appshunter.io/ios/app/molarity-abacus/id915807653 (this page in markdown: same URL + `.md`)
- Developer: [Oak Driven LLC](https://appshunter.io/developer/915807656)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 4.47/5 from 15 App Store ratings · 15 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 2 MB
- Languages: English
- Released: 2014-10-24
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/molarity-abacus/id915807653/reviews.md

## What is Molarity Abacus?

- Easily calculate Molarity, Total Solution Volume, Solute Mass, or Molecular Weight.
- Simply input three of the four variables and the fourth is calculated automatically.
- The units can be changed for Total Solution Volume, Solute Mass, or Molecular Weight.
- In-App purchase available to create and store compounds for quick access.

The Molarity Abacus is a simple and easy way to do molarity calculations. Simply input any three of the four variables and the fourth will be instantly calculated. Includes full help documentation on each screen. 

The seven strong acids and eight strong bases are pre-configured in the app and can be selected from a list of compounds.

With an In-App purchase, you gain even more functionality allowing you to create and store compounds for repeated use. You name the compound, select the elements in it, set the number of atoms for each element, and the molecular weight is calculated automatically. The full periodic table is included and has been loaded with molecular weights and checked against publicly available sources on the internet. The element weights can be edited.

This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.openssl.org/)

## Key features

- Molarity calculation
- Solute mass calculation
- Total solution volume calculation
- Molecular weight calculation
- Customizable units
- Pre-configured compounds
- Create and store custom compounds

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Create and Save Compounds | Free | one-time |


## Recent user reviews (10 of 15)

All indexed reviews: https://appshunter.io/ios/app/molarity-abacus/id915807653/reviews.md

### 5/5 — Well Designed and Helpful!

*2014-11-27*

Well designed app that streamlines a lot of calculations.  Very helpful (and necessary)...

### 4/5 — Easy to use

*2014-11-27*

Great, simple, powerful app.

### 4/5 — Time saver

*2014-11-22*

This app is a real time-saver. Very simple to use!

### 4/5 — Great learning app

*2014-11-22*

Great app to use with my students. Very useful.

### 5/5 — Great app

*2014-11-17*

Simple, user-friendly, and streamlined. Bravo!

### 4/5 — Effective App

*2014-11-16*

Performs the task I need quickly and effectively with no unnecessary frills.

### 4/5 — Good for my lab work

*2014-11-15*

Saves me a little time every day.

### 4/5 — No frills, easy to use molarity calculator

*2014-11-14*

Great app; straight forward and very user friendly. Superior to other free molarity calcs: easier to navigate than sigma and less buggy than life. As a grad student the ability to store compounds comes in handy during lab work.

### 5/5 — Coordinator

*2014-11-09*

Saves time and makes life easier!

### 5/5 — Great app

*2014-11-09*

Great app!

## Frequently asked questions about Molarity Abacus

### What calculations can Molarity Abacus perform?

Molarity Abacus can easily calculate Molarity, Total Solution Volume, Solute Mass, or Molecular Weight. You simply input any three of these variables, and the fourth is calculated automatically.

### Can I customize units in Molarity Abacus?

Yes, the units for Total Solution Volume, Solute Mass, and Molecular Weight can be changed within the app to suit your needs.

### Does Molarity Abacus come with pre-configured compounds?

Yes, the app includes pre-configured strong acids and strong bases that can be selected from a list of compounds for quick access.

### What functionality does the in-app purchase offer in Molarity Abacus?

The in-app purchase allows you to create and store your own custom compounds for repeated use. You can name compounds, select elements, set atom counts, and have the molecular weight calculated automatically.

### Is Molarity Abacus suitable for beginners?

The app is designed to be simple and easy to use, with full help documentation included on each screen, making it accessible for beginners performing molarity calculations.

### What devices does Molarity Abacus support?

Molarity Abacus is supported on iPhone and iPod devices.

### How often is Molarity Abacus updated?

The latest version is 1.0.2, which was last updated on September 20, 2016. Future updates may be released by the developer, Oak Driven LLC.

### Does Molarity Abacus have ads?

No, Molarity Abacus does not contain advertisements. The app is free to download and use, with an optional in-app purchase for enhanced features.

## Version history (last 3 releases)

### 1.0.2 — 2016-09-20

This app has been updated by Apple to display the Apple Watch app icon.

Fixed issue with app freezing in iOS 10

### 1.0.1 — 2014-11-05

- Fixed a bug where the initial help screen was continuing to display after the first run.
- Fixed a few typos.
- Changed to allow access to the preloaded acids and bases in the free version.

### 1.0 — 2014-10-24

No release notes.

## Apps similar to Molarity Abacus

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Countdown Widget: Countful](https://appshunter.io/ios/app/countdown-widget-countful/id6504784186) | 4.9 (13) | Free | Utilities |
| [Multi Search Engine](https://appshunter.io/ios/app/multi-search-engine/id1672855306) | 5.0 (1) | $0.99 | Utilities |
| [Parking Camera](https://appshunter.io/ios/app/parking-camera/id6740067883) | — | Free | Utilities |
| [Pocket Pass Manager](https://appshunter.io/ios/app/pocket-pass-manager/id1563839314) | 4.5 (24) | Free | Utilities |
| [Private Album - PRAM](https://appshunter.io/ios/app/private-album-pram/id1630541373) | 5.0 (1) | $0.99 | Utilities |
| [Pocket Counter Pro](https://appshunter.io/ios/app/pocket-counter-pro/id6483759355) | 5.0 (5) | Free | Utilities |

---

*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.*