# BioSignal Blood Test Tracker vs Marker · Blood Test Tracker

The clearest difference is ads: Marker · Blood Test Tracker at none against BioSignal Blood Test Tracker's shown. Marker · Blood Test Tracker also leads on iOS requirement (17.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. BioSignal Blood Test Tracker sells 3 in-app purchases, starting at $6.99 per month and Marker · Blood Test Tracker sells 2 in-app purchases, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | BioSignal Blood Test Tracker | Marker · Blood Test Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 3 weeks |
| Size | 11 MB | 9 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Russell Ong](https://appshunter.io/developer/1533441487) | [Jan Zellerhoff](https://appshunter.io/developer/1878750371) |

## What reviewers say

### BioSignal Blood Test Tracker

[App page](https://appshunter.io/ios/app/biosignal-blood-test-tracker/id6767776200)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BioSignal Pro Monthly | $6.99 | per month |
| BioSignal Pro Yearly | $39.99 | per year |
| BioSignal Pro Lifetime | $79.99 | one-time |


### Marker · Blood Test Tracker

[App page](https://appshunter.io/ios/app/marker-blood-test-tracker/id6791303820)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marker Pro (Annual) | $24.99 | per year |
| Marker Pro (Lifetime) | $44.99 | one-time |


## Frequently asked questions

### Is BioSignal Blood Test Tracker free?

BioSignal Blood Test Tracker is free to download, with in-app purchases available.

### Is Marker · Blood Test Tracker free?

Marker · Blood Test Tracker is free to download, with in-app purchases available.

### Do BioSignal Blood Test Tracker or Marker · Blood Test Tracker have ads?

BioSignal Blood Test Tracker shows ads; Marker · Blood Test Tracker does not.

---

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