# oMeoo vs Bio

The clearest difference is in-app purchases: oMeoo at none against Bio's 3. Bio's advantage is update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

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

oMeoo ships an update monthly, Bio every 2 weeks. The most recent releases landed on May 19, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | oMeoo | Bio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bio-calculator/id6498629520/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 15 MB | 51 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [东举 杨](https://appshunter.io/developer/1716951144) | [杰 吴](https://appshunter.io/developer/1729187814) |

## What reviewers say

### oMeoo

[App page](https://appshunter.io/ios/app/omeoo/id6472629160)

**Features:** macOS Compatibility

**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 oMeoo free?

oMeoo is free to download, with no in-app purchases.

### Is Bio free?

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

### Do oMeoo or Bio have ads?

Neither oMeoo nor Bio shows ads.

### Which is updated more often, oMeoo or Bio?

oMeoo ships an update monthly, and Bio every 2 weeks. Most recently, oMeoo was updated on May 19, 2026 and Bio on September 11, 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.*