# Bio vs Marriage

The clearest difference is price: Bio at Free against Marriage's $0.99. Bio also leads on update cadence (every 6 months vs every 11 months). Marriage's advantage is in-app purchases (none vs 3) and iOS requirement (15.6 vs 17.5). On ads and device support there is nothing between them.

Bio is free to download; Marriage costs $0.99 up front. Bio sells 3 one-off in-app purchases. Marriage asks for nothing beyond the download.

Bio ships an update every 6 months, Marriage every 11 months. The most recent releases landed on June 5, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Bio | Marriage |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/bio-compatibility-analysis/id566991076/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 11 months |
| Monetization | Free | — |
| Size | 6 MB | 6 MB |
| Requires iOS | 17.5 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Biological Immunity Research Institute](https://appshunter.io/developer/566991079) | [Primosoft Inc](https://appshunter.io/developer/638687289) |

## What reviewers say

### Bio

[App page](https://appshunter.io/ios/app/bio-compatibility-analysis/id566991076)

Discover deeper connections by analyzing your birth date for physical, mental, and emotional compatibility with others. This tool helps you understand relationship dynamics and find more fulfilling partnerships.

**Highlights:** Birth date compatibility analysis, Physical compatibility assessment, Mental compatibility assessment, Emotional compatibility assessment, Relationship insight tool

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Credit | $1.99 | one-time |
| 5 Credits | $3.99 | one-time |
| 10 Credits | $4.99 | one-time |


### Marriage

[App page](https://appshunter.io/ios/app/marriage-compatibility/id1490691406)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bio free?

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

### Is Marriage free?

Marriage costs $0.99, with no in-app purchases.

### Do Bio or Marriage have ads?

Neither Bio nor Marriage shows ads.

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

Bio ships an update every 6 months, and Marriage every 11 months. Most recently, Bio was updated on June 5, 2026 and Marriage on September 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.*