# Blockchain Association vs chainSign

The clearest difference is in-app purchases: Blockchain Association at none against chainSign's 4. chainSign's advantage is update cadence (every 4 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. chainSign sells 4 in-app purchases, starting at $349.99 per month. Blockchain Association asks for nothing beyond the download.

Blockchain Association ships an update every 3 months, chainSign every 4 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Blockchain Association | chainSign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 76 MB | 76 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Blockchain Association](https://appshunter.io/developer/1845452399) | [Demetrius Barrett](https://appshunter.io/developer/1505438305) |

## What reviewers say

### Blockchain Association

[App page](https://appshunter.io/ios/app/blockchain-association/id6753881239)

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

**In-app purchases:** none


### chainSign

[App page](https://appshunter.io/ios/app/chainsign/id6761083360)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solo | $349.99 | per month |
| Practice | $699.99 | per month |
| Basic Recording | $0.99 | one-time |
| Certified Hash Record | $79.99 | one-time |


## Frequently asked questions

### Is Blockchain Association free?

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

### Is chainSign free?

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

### Do Blockchain Association or chainSign have ads?

Neither Blockchain Association nor chainSign shows ads.

### Which is updated more often, Blockchain Association or chainSign?

Blockchain Association ships an update every 3 months, and chainSign every 4 days. Most recently, Blockchain Association was updated on October 30, 2026 and chainSign on November 5, 2026.

---

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