# Bio vs Marriage Timeline AI

The clearest difference is ads: Bio at none against Marriage Timeline AI's shown. Marriage Timeline AI's advantage is update cadence (every 5 weeks vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Bio sells 3 one-off in-app purchases and Marriage Timeline AI sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Bio ships an update every 6 months, Marriage Timeline AI every 5 weeks. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Bio | Marriage Timeline AI |
| --- | --- | --- |
| Price | Free | Free |
| 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 | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 18 MB |
| Requires iOS | 17.5 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Biological Immunity Research Institute](https://appshunter.io/developer/566991079) | [GNSAC BILISIM TEKNOLOJILERI LIMITED SIRKETI](https://appshunter.io/developer/1835678929) |

## 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 Timeline AI

[App page](https://appshunter.io/ios/app/marriage-timeline-ai/id6751749607)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly – 100 Credits | $0.99 | per month |


## Frequently asked questions

### Is Bio free?

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

### Is Marriage Timeline AI free?

Marriage Timeline AI is free to download, with in-app purchases available.

### Do Bio or Marriage Timeline AI have ads?

Marriage Timeline AI shows ads; Bio does not.

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

Bio ships an update every 6 months, and Marriage Timeline AI every 5 weeks. Most recently, Bio was updated on October 1, 2026 and Marriage Timeline AI on October 16, 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.*