# BioCaL — MolBio Volume Calculator

> MolBio Volume Calculator (iPhone/iPad app by Yoshikazu Mikawa.)

- Source: https://appshunter.io/ios/app/biocal/id6476985449 (this page in markdown: same URL + `.md`)
- Developer: [Yoshikazu Mikawa](https://appshunter.io/developer/1778069380)
- Category: Education, Utilities
- Price: Free with in-app purchases (on sale, was $4.99)
- Age rating: 4+
- Requires: iOS 17.0 · 23 MB
- Languages: American English
- Released: 2024-02-05
- Data updated: 2026-08-02
- User reviews in markdown: https://appshunter.io/ios/app/biocal/id6476985449/reviews.md

## What is BioCaL?

Experimental research in molecular biology requires fundamental techniques such as restriction enzyme digestion and DNA  ligation, which are essential for recombinant DNA technology and widely practiced in laboratories worldwide. Mastering these techniques is crucial for progress in biological research.

Our app simplifies these processes by providing precise volumes for each component required in restriction digestion and ligation reactions. Users no longer need to calculate DNA volumes manually; instead, they input the desired DNA concentration, and the app calculates the necessary volumes for your reactions. The app then conveniently provides these volumes, so you can quickly set up your reactions ready for incubation at the appropriate temperatures in Eppendorf tubes.

Additionally, our app offers the necessary DNA volumes for DNA assembly reactions, accommodating up to six different DNA fragment assemblies when constructing and using two or more DNA molecules.

This user-friendly app ensures seamless operation, allowing instant use without the need for detailed instructions. It also guides users in sampling volumes to normalize mass and molar concentration across tubes with containing different  DNA concentrations and sizes. Furthermore, it provides options for calculating various physical quantities of DNA and RNA of interest.

Please note that all calculations involving DNA experiments are performed on double-stranded DNA molecules in BioCaL. 

The app also includes features for normalizing cell optical density to adjust the number of cells taken from different samples, as well as evaluating plasmid DNA copy number per cell and cosmid packaging efficiency, facilitating thorough analysis and efficient experiments.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| BioCaL Premium Access | $4.99 | one-time |



## Version history (last 5 releases)

### 2.38.67 — 2026-07-29

Polished codon table.

### 2.38.66 — 2026-07-28

Expanded free access to the Tm calculator and added free codon tables for quick reference.

### 2.37.66 — 2025-11-11

1. Improvements to premium feature activation.
2. Bug fixes and performance enhancements.

### 2.37.65 — 2025-11-09

‘Intrinsic Terminator’ is now called ‘Terminator’, reflecting support for both rho-independent and rho-dependent terminators.

### 2.37.64 — 2025-11-07

Minor improvements to purchase flow and legacy account recognition.

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## More apps by Yoshikazu Mikawa

- [MoLSoL](https://appshunter.io/ios/app/molsol/id6478563548)
- [CodonQ](https://appshunter.io/ios/app/codonq/id6479198761)
- [AirLify](https://appshunter.io/ios/app/airlify/id6479359307)
- [StoPify](https://appshunter.io/ios/app/stopify/id6480067024)
- [W8Bus](https://appshunter.io/ios/app/w8bus/id6502446764)

All apps by Yoshikazu Mikawa: https://appshunter.io/developer/1778069380

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*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 2026-08-02.*