# Authenticate By KDC vs QuantumPass

The clearest difference is in-app purchases: Authenticate By KDC at none against QuantumPass's 3. Authenticate By KDC also leads on update cadence (monthly vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. QuantumPass sells 3 one-off in-app purchases. Authenticate By KDC asks for nothing beyond the download.

Authenticate By KDC ships an update monthly, QuantumPass every 10 months. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Authenticate By KDC | QuantumPass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 10 months |
| Size | 4 MB | 3 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Kenneth Lovett](https://appshunter.io/developer/1831085892) | [Valerie Otero](https://appshunter.io/developer/1848585337) |

## What reviewers say

### Authenticate By KDC

[App page](https://appshunter.io/ios/app/authenticate-by-kdc/id6751268798)

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

**In-app purchases:** none


### QuantumPass

[App page](https://appshunter.io/ios/app/quantumpass/id6755789663)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small coffee | $1.99 | one-time |
| Medium coffee | $3.99 | one-time |
| Large coffee | $5.99 | one-time |


## Frequently asked questions

### Is Authenticate By KDC free?

Authenticate By KDC is free to download, with no in-app purchases.

### Is QuantumPass free?

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

### Do Authenticate By KDC or QuantumPass have ads?

Neither Authenticate By KDC nor QuantumPass shows ads.

### Which is updated more often, Authenticate By KDC or QuantumPass?

Authenticate By KDC ships an update monthly, and QuantumPass every 10 months. Most recently, Authenticate By KDC was updated on October 28, 2026 and QuantumPass on October 26, 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.*