# Biological Buffer Calculator vs Bio

The clearest difference is rating: Bio at 5.0 against Biological Buffer Calculator's 2.6. Bio also leads on update cadence (every 2 weeks vs every 77 months). Biological Buffer Calculator's advantage is in-app purchases (none vs 3) and ratings volume (8 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Bio sells 3 in-app purchases, starting at $2.99 per month. Biological Buffer Calculator asks for nothing beyond the download.

Bio holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

Biological Buffer Calculator ships an update every 77 months, Bio every 2 weeks. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Biological Buffer Calculator | Bio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (8 ratings)](https://appshunter.io/ios/app/biological-buffer-calculator/id408368126/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio-calculator/id6498629520/reviews)** |
| Number of ratings | **8** | 2 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 77 months | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Size | 5 MB | 51 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wiley](https://appshunter.io/developer/334132751) | [杰 吴](https://appshunter.io/developer/1729187814) |

## What reviewers say

### Biological Buffer Calculator

[App page](https://appshunter.io/ios/app/biological-buffer-calculator/id408368126)

This utility app assists chemists and biochemists in preparing precise buffer solutions. Users input desired volume, pH, and concentration, along with stock solution details, to receive exact mixing instructions.

**Highlights:** Buffer system selection, Volume, pH, and concentration input, Stock solution concentration input, Precise mixing volume calculation, Pocket companion for labs

**Features:** Vision Pro support

**In-app purchases:** none


### Bio

[App page](https://appshunter.io/ios/app/bio-calculator/id6498629520)

This scientific assistant provides researchers and students with essential tools for everyday lab calculations. It offers modules for protein and nucleic acid conversions, solution preparation, microbiology, and buffer recipes. Streamline your laboratory workflow with precise and efficient scientific computations.

**Highlights:** Protein & Peptide Conversion, Nucleic Acid & Genomics Toolkit, Biochemistry & Solution Preparation, Microbiology & Cell Culture Tools, Buffer & Solution Preparation Library, Native iOS Performance

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $2.99 | per month |
| Yearly Plan | $19.99 | per year |
| Lifetime member | $44.99 | one-time |


## Frequently asked questions

### Is Biological Buffer Calculator free?

Biological Buffer Calculator is free to download, with no in-app purchases.

### Is Bio free?

Bio is free to download, with in-app purchases available.

### Which has better reviews, Biological Buffer Calculator or Bio?

Bio is rated higher. Biological Buffer Calculator averages 2.6 out of 5 from 8 ratings, while Bio averages 5.0 from 2 ratings.

### Do Biological Buffer Calculator or Bio have ads?

Neither Biological Buffer Calculator nor Bio shows ads.

### Which is updated more often, Biological Buffer Calculator or Bio?

Biological Buffer Calculator ships an update every 77 months, and Bio every 2 weeks. Most recently, Biological Buffer Calculator was updated on October 3, 2026 and Bio on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*