# NCP Authenticator vs Canopy Sieve

The clearest difference is in-app purchases: NCP Authenticator at none against Canopy Sieve's 3. NCP Authenticator also leads on iOS requirement (15.1 vs 17.6). Canopy Sieve's advantage is update cadence (every 2 months vs every 25 months). On price, ads and device support there is nothing between them.

Both are free to download. Canopy Sieve sells 3 one-off in-app purchases. NCP Authenticator asks for nothing beyond the download.

NCP Authenticator ships an update every 25 months, Canopy Sieve every 2 months. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | NCP Authenticator | Canopy Sieve |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 2 months** |
| Size | 18 MB | 47 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [N C P E GmbH Network Communications Products Engineering](https://appshunter.io/developer/1187926974) | [Michael Murphy](https://appshunter.io/developer/1691028155) |

## What reviewers say

### NCP Authenticator

[App page](https://appshunter.io/ios/app/ncp-authenticator/id1483468626)

**In-app purchases:** none


### Canopy Sieve

[App page](https://appshunter.io/ios/app/canopy-sieve-ad-blocker/id6772777541)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |


## Frequently asked questions

### Is NCP Authenticator free?

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

### Is Canopy Sieve free?

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

### Do NCP Authenticator or Canopy Sieve have ads?

Neither NCP Authenticator nor Canopy Sieve shows ads.

### Which is updated more often, NCP Authenticator or Canopy Sieve?

NCP Authenticator ships an update every 25 months, and Canopy Sieve every 2 months. Most recently, NCP Authenticator was updated on September 29, 2026 and Canopy Sieve on September 30, 2026.

---

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