# Knot Not vs CatchU

The clearest difference is update cadence: CatchU at every 8 days against Knot Not's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Knot Not sells 1 one-off in-app purchase and CatchU sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Knot Not ships an update every 6 months, CatchU every 8 days. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Knot Not | CatchU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Size | 6 MB | 12 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ZHENGZE PEI](https://appshunter.io/developer/1765491666) | [乐 王](https://appshunter.io/developer/1879659759) |

## What reviewers say

### Knot Not

[App page](https://appshunter.io/ios/app/knot-not-conflicts-tracker/id6753355545)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knotnot Premium | $1.99 | one-time |


### CatchU

[App page](https://appshunter.io/ios/app/catchu/id6760410648)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock - Unlimited Citations | $1.99 | one-time |


## Frequently asked questions

### Is Knot Not free?

Knot Not is free to download, with in-app purchases available.

### Is CatchU free?

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

### Do Knot Not or CatchU have ads?

Neither Knot Not nor CatchU shows ads.

### Which is updated more often, Knot Not or CatchU?

Knot Not ships an update every 6 months, and CatchU every 8 days. Most recently, Knot Not was updated on September 10, 2026 and CatchU on September 18, 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.*