# Blood Components vs Heeadsss

The clearest difference is iOS requirement: Heeadsss at 12.0 against Blood Components's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Blood Components ships an update every 19 months, Heeadsss every 13 months. The most recent releases landed on October 8, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Blood Components | Heeadsss |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 13 months** |
| Monetization | Free | — |
| Size | 16 MB | 12 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [NHS](https://appshunter.io/developer/1192687136) | [James Edelman](https://appshunter.io/developer/1388992114) |

## What reviewers say

### Blood Components

[App page](https://appshunter.io/ios/app/blood-components/id1221434626)

This app provides clinicians with a summary of national guidelines for the appropriate use of blood components. It facilitates robust documentation of transfusion indications, referencing key medical guidelines.

**Highlights:** Summarizes national blood transfusion guidelines, Facilitates appropriate blood use, Enables documentation of transfusion indications, References NBTC, BSH, and NICE guidelines, Acts as a clinical reference tool

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

**In-app purchases:** none


### Heeadsss

[App page](https://appshunter.io/ios/app/heeadsss/id1418543003)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Blood Components free?

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

### Is Heeadsss free?

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

### Do Blood Components or Heeadsss have ads?

Neither Blood Components nor Heeadsss shows ads.

### Which is updated more often, Blood Components or Heeadsss?

Blood Components ships an update every 19 months, and Heeadsss every 13 months. Most recently, Blood Components was updated on October 8, 2026 and Heeadsss on October 20, 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.*