# PeptideOS+ vs Vialry

The clearest difference is update cadence: PeptideOS+ at every 4 days against Vialry's fortnightly. Vialry's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. PeptideOS+ sells 2 in-app purchases, starting at $9.99 per month and Vialry sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

PeptideOS+ ships an update every 4 days, Vialry fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | PeptideOS+ | Vialry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 6 MB | 17 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 17+ |
| Developer | [ZACHARY CANCIANO GOLD](https://appshunter.io/developer/1875956705) | [Mitaanshu Agarwal](https://appshunter.io/developer/1896724075) |

## What reviewers say

### PeptideOS+

[App page](https://appshunter.io/ios/app/peptideos-plus/id6762200959)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $69.99 | per year |


### Vialry

[App page](https://appshunter.io/ios/app/vialry-injection-tracker/id6771655737)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vialry Pro Monthly | $7.99 | per month |
| Vialry Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is PeptideOS+ free?

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

### Is Vialry free?

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

### Do PeptideOS+ or Vialry have ads?

Neither PeptideOS+ nor Vialry shows ads.

### Which is updated more often, PeptideOS+ or Vialry?

PeptideOS+ ships an update every 4 days, and Vialry fortnightly. Most recently, PeptideOS+ was updated on October 24, 2026 and Vialry on October 24, 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.*