# Know & Act vs Decade

The clearest difference is update cadence: Decade at daily against Know & Act's every 2 days. Know & Act's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Know & Act sells 1 one-off in-app purchase and Decade sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Know & Act ships an update every 2 days, Decade daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Know & Act | Decade |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 days | **Daily** |
| Size | 36 MB | 58 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [zhenyu song](https://appshunter.io/developer/1721282851) | [ZIH LONG GUO](https://appshunter.io/developer/6801395405) |

## What reviewers say

### Know & Act

[App page](https://appshunter.io/ios/app/know-and-act-daily-reflection/id6784056835)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Pro | $1.99 | one-time |


### Decade

[App page](https://appshunter.io/ios/app/decade-habit-tracker/id6801395403)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decade Pro | $4.99 | one-time |


## Frequently asked questions

### Is Know & Act free?

Know & Act is free to download, with in-app purchases available.

### Is Decade free?

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

### Do Know & Act or Decade have ads?

Both Know & Act and Decade show ads.

### Which is updated more often, Know & Act or Decade?

Know & Act ships an update every 2 days, and Decade daily. Most recently, Know & Act was updated on October 24, 2026 and Decade on October 25, 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.*