# Noudisan vs Blood Sync App

The clearest difference is update cadence: Blood Sync App at every 2 months against Noudisan's every 12 months. Noudisan's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Noudisan ships an update every 12 months, Blood Sync App every 2 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Noudisan | Blood Sync App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Size | 19 MB | 63 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [BLOOD DONORS ASSOCIATION](https://appshunter.io/developer/1702358076) | [Brainstormer technologies](https://appshunter.io/developer/1804029407) |

## What reviewers say

### Noudisan

[App page](https://appshunter.io/ios/app/noudisan/id6461163672)

**Features:** macOS Compatibility

**In-app purchases:** none


### Blood Sync App

[App page](https://appshunter.io/ios/app/blood-sync-app/id6754638842)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Noudisan free?

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

### Is Blood Sync App free?

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

### Do Noudisan or Blood Sync App have ads?

Neither Noudisan nor Blood Sync App shows ads.

### Which is updated more often, Noudisan or Blood Sync App?

Noudisan ships an update every 12 months, and Blood Sync App every 2 months. Most recently, Noudisan was updated on November 3, 2026 and Blood Sync App on October 28, 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.*