# PeptideStack vs Loop

The clearest difference is iOS requirement: PeptideStack at 18.0 against Loop's 26.5. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PeptideStack sells 3 in-app purchases, starting at $14.99 per month and Loop sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PeptideStack | Loop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 47 MB | 37 MB |
| Requires iOS | **18.0** | 26.5 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Roviq LLC](https://appshunter.io/developer/1453953527) | [ROK POPOVIC](https://appshunter.io/developer/6778476196) |

## What reviewers say

### PeptideStack

[App page](https://appshunter.io/ios/app/peptidestack/id6761675341)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PeptideStack Pro Monthly | $14.99 | per month |
| PeptideStack Pro Yearly | $99.99 | per year |
| PeptideStack Pro Lifetime | $249.00 | one-time |


### Loop

[App page](https://appshunter.io/ios/app/loop-peptide-tracker/id6778476194)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Loop Pro - Monthly | $9.99 | per month |
| Loop Pro - Yearly Offer | $29.99 | per year |
| Loop Pro - Yearly | $39.99 | per year |


## Frequently asked questions

### Is PeptideStack free?

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

### Is Loop free?

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

### Do PeptideStack or Loop have ads?

Neither PeptideStack nor Loop shows ads.

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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.*