# COPD Advances vs Kno App

The clearest difference is in-app purchases: COPD Advances at none against Kno App's 2. COPD Advances also leads on update cadence (daily vs every 4 days) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Kno App sells 2 in-app purchases, starting at $4.99 per month. COPD Advances asks for nothing beyond the download.

COPD Advances ships an update daily, Kno App every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | COPD Advances | Kno App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 4 days |
| Size | 156 MB | 32 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Med Learning Group](https://appshunter.io/developer/1268829636) | [BRBR GROUP](https://appshunter.io/developer/1882102236) |

## What reviewers say

### COPD Advances

[App page](https://appshunter.io/ios/app/copd-advances/id6478634528)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kno App

[App page](https://appshunter.io/ios/app/kno-app-learn-something-new/id6759986030)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kno Premium Monthly | $4.99 | per month |
| Kno Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is COPD Advances free?

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

### Is Kno App free?

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

### Do COPD Advances or Kno App have ads?

Neither COPD Advances nor Kno App shows ads.

### Which is updated more often, COPD Advances or Kno App?

COPD Advances ships an update daily, and Kno App every 4 days. Most recently, COPD Advances was updated on October 25, 2026 and Kno App on October 24, 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.*