# Biohack vs Stay

Biohack and Stay are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Biohack sells 2 in-app purchases, starting at $4.99 per month and Stay sells 3 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.

Biohack ships an update fortnightly, Stay every 2 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Biohack | Stay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/biohack-longevity-food-coach/id6762187667/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 176 MB | 70 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Buettnerlabs LLC](https://appshunter.io/developer/1893282488) | [Libreta Limited](https://appshunter.io/developer/6799063837) |

## What reviewers say

### Biohack

[App page](https://appshunter.io/ios/app/biohack-longevity-food-coach/id6762187667)

This app analyzes your meals to provide a longevity score based on aging research. It also tracks intermittent fasting, offers personalized nutrient targets, and recommends supplements to optimize your diet for a longer, healthier life.

**Highlights:** AI-powered meal analysis, Longevity meal scoring, Intermittent fasting tracker, Personalized nutrient targets, Supplement recommendations, Longevity insights and trends

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |


### Stay

[App page](https://appshunter.io/ios/app/stay-longevity-macro-tracker/id6799063835)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $11.99 | per month |
| Yearly (special offer) | $24.99 | per year |
| Yearly | $39.99 | per year |


## Frequently asked questions

### Is Biohack free?

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

### Is Stay free?

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

### Do Biohack or Stay have ads?

Neither Biohack nor Stay shows ads.

### Which is updated more often, Biohack or Stay?

Biohack ships an update fortnightly, and Stay every 2 weeks. Most recently, Biohack was updated on October 31, 2026 and Stay on November 6, 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.*