# Calculator mini vs Bio

The clearest difference is rating: Bio at 5.0 against Calculator mini's 4.2. Calculator mini's advantage is update cadence (every 2 days vs every 2 weeks) and monetization model (free vs freemium). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Calculator mini sells 1 one-off in-app purchase and Bio sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Bio holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

Calculator mini ships an update every 2 days, Bio every 2 weeks. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Calculator mini | Bio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/calculator-mini-combo/id1672581992/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio-calculator/id6498629520/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | **Free** | Freemium |
| Size | 3 MB | 51 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [鑫 吴](https://appshunter.io/developer/1439411405) | [杰 吴](https://appshunter.io/developer/1729187814) |

## What reviewers say

### Calculator mini

[App page](https://appshunter.io/ios/app/calculator-mini-combo/id1672581992)

A straightforward calculator app featuring a clean design. It offers essential calculation functions, a history log, and home screen widget support for quick access. Enjoy a seamless and elegant user experience for your everyday calculations.

**Highlights:** Basic calculation functions, Combination calculation, History records, Home screen widgets, Sleek design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator mini · Pro | $0.99 | one-time |


### 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 Calculator mini free?

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

### Is Bio free?

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

### Which has better reviews, Calculator mini or Bio?

Bio is rated higher. Calculator mini averages 4.2 out of 5 from 5 ratings, while Bio averages 5.0 from 2 ratings.

### Do Calculator mini or Bio have ads?

Neither Calculator mini nor Bio shows ads.

### Which is updated more often, Calculator mini or Bio?

Calculator mini ships an update every 2 days, and Bio every 2 weeks. Most recently, Calculator mini was updated on October 11, 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.*