# Peptide AI vs LychnoFit

The clearest difference is ads: Peptide AI at none against LychnoFit's shown. LychnoFit's advantage is iOS requirement (15.1 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Peptide AI sells 4 in-app purchases, starting at $6.99 per 7 days and LychnoFit sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Peptide AI ships an update weekly, LychnoFit every 5 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Peptide AI | LychnoFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (75 ratings)](https://appshunter.io/ios/app/peptide-ai-reta-glp-1-tracker/id6760374374/reviews)** | — |
| Number of ratings | **75** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 74 MB | 52 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Peptide AI](https://appshunter.io/developer/1884181684) | [Hasan ergunt](https://appshunter.io/developer/6777539412) |

## What reviewers say

### Peptide AI

[App page](https://appshunter.io/ios/app/peptide-ai-reta-glp-1-tracker/id6760374374)

Log peptide and GLP-1 doses with an AI coach that analyzes your data. Track vial levels, rotate injection sites, and monitor side effects. Connect wearables for comprehensive health insights.

**Highlights:** AI coach for data analysis, Two-tap dose logging, Injection site rotation map, Vial and pen level tracking, Integration with wearables, Community rooms and leaderboards, PDF export of health data

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $6.99 | per 7 days |
| Premium Monthly | $14.99 | per month |
| Premium Yearly Offer | $29.99 | per year |
| Premium Yearly | $59.99 | per year |


### LychnoFit

[App page](https://appshunter.io/ios/app/lychnofit/id6777539410)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Quarterly | $2.99 | per 3 months |
| Yearly | $6.99 | per year |


## Frequently asked questions

### Is Peptide AI free?

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

### Is LychnoFit free?

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

### Do Peptide AI or LychnoFit have ads?

LychnoFit shows ads; Peptide AI does not.

### Which is updated more often, Peptide AI or LychnoFit?

Peptide AI ships an update weekly, and LychnoFit every 5 days. Most recently, Peptide AI was updated on November 9, 2026 and LychnoFit on November 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*