# Bio vs Compatibility Cards

The clearest difference is rating: Compatibility Cards at 4.8 against Bio's 4.0. Compatibility Cards also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 6 months). Bio's advantage is review sentiment (100% vs 88%). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Bio sells 3 one-off in-app purchases. Compatibility Cards asks for nothing beyond the download.

Compatibility Cards holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Compatibility Cards has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Bio's written reviews are positive against 88% of Compatibility Cards's, so the app with the better star average is not the one people write more warmly about.

Bio ships an update every 6 months, Compatibility Cards every 3 weeks. The most recent releases landed on October 17, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Bio | Compatibility Cards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/bio-compatibility-analysis/id566991076/reviews) | **[4.8 (14 ratings)](https://appshunter.io/ios/app/compatibility-cards/id1516058662/reviews)** |
| Number of ratings | 1 | **14** |
| Positive reviews | **100.0% of reviews** | 87.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 6 MB | 14 MB |
| Requires iOS | 17.5 | **10.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Biological Immunity Research Institute](https://appshunter.io/developer/566991079) | [Half Moon Studio Inc.](https://appshunter.io/developer/1516058661) |

## 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 |


### Compatibility Cards

[App page](https://appshunter.io/ios/app/compatibility-cards/id1516058662)

Discover intimate matches based on birth dates using an ancient numerology system. This app provides insights into relationship compatibility, offering a unique perspective on connections.

**Highlights:** Discover intimate matches, Birth date-based analysis, Magi System numerology, Card associations for birth dates, Unlimited match lookups, Detailed compatibility insights

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bio free?

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

### Is Compatibility Cards free?

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

### Which has better reviews, Bio or Compatibility Cards?

Compatibility Cards is rated higher. Bio averages 4.0 out of 5 from 1 ratings, while Compatibility Cards averages 4.8 from 14 ratings.

### Do Bio or Compatibility Cards have ads?

Neither Bio nor Compatibility Cards shows ads.

### Which is updated more often, Bio or Compatibility Cards?

Bio ships an update every 6 months, and Compatibility Cards every 3 weeks. Most recently, Bio was updated on October 17, 2026 and Compatibility Cards on September 27, 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.*