# DoseRhythm vs Vial AI

The clearest difference is in-app purchases: DoseRhythm at none against Vial AI's 4. DoseRhythm also leads on ads (none vs shown) and update cadence (every 2 weeks vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Vial AI sells 4 in-app purchases, starting at $14.99 per month. DoseRhythm asks for nothing beyond the download.

DoseRhythm ships an update every 2 weeks, Vial AI monthly. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | DoseRhythm | Vial AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 46 MB | 61 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Steve Olson](https://appshunter.io/developer/1876760883) | [Fabio Jonathan Arifin](https://appshunter.io/developer/1803911370) |

## What reviewers say

### DoseRhythm

[App page](https://appshunter.io/ios/app/doserhythm/id6759083545)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vial AI

[App page](https://appshunter.io/ios/app/vial-ai-peptide-tracker/id6763749357)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vial Monthly | $14.99 | per month |
| Vial Premium (Special Price) | $39.99 | per year |
| Vial Yearly | $59.99 | per year |
| Vial Lifetime (Limited) | $149.99 | one-time |


## Frequently asked questions

### Is DoseRhythm free?

DoseRhythm is free to download, with no in-app purchases.

### Is Vial AI free?

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

### Do DoseRhythm or Vial AI have ads?

Vial AI shows ads; DoseRhythm does not.

### Which is updated more often, DoseRhythm or Vial AI?

DoseRhythm ships an update every 2 weeks, and Vial AI monthly. Most recently, DoseRhythm was updated on October 25, 2026 and Vial AI on October 26, 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.*