# Iknow? vs Wool Sort 3D

The clearest difference is ads: Iknow? at none against Wool Sort 3D's shown. Wool Sort 3D's advantage is update cadence (every 10 days vs every 19 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Iknow? sells 4 one-off in-app purchases and Wool Sort 3D sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Iknow? ships an update every 19 months, Wool Sort 3D every 10 days. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Iknow? | Wool Sort 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (1.1K ratings)](https://appshunter.io/ios/app/wool-sort-3d/id6747569909/reviews)** |
| Number of ratings | — | **1.1K** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 45 MB | 390 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Juan Ormaechea](https://appshunter.io/developer/1662392975) | [Changsha Zhichuang Network Technology Co., Ltd.](https://appshunter.io/developer/1819642809) |

## What reviewers say

### Iknow?

[App page](https://appshunter.io/ios/app/iknow/id1663544387)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 coins | $0.99 | one-time |
| 25 coins | $1.99 | one-time |
| 60 Coins | $2.99 | one-time |
| Premiun Plan | $3.99 | one-time |


### Wool Sort 3D

[App page](https://appshunter.io/ios/app/wool-sort-3d/id6747569909)

Engage in a relaxing puzzle game where you deconstruct charming 3D wool sculptures. Match colors to unravel threads and reveal intricate designs, offering a peaceful and visually rich escape with no timers or pressure.

**Highlights:** 3D wool sculpture puzzles, Color pattern matching, Tap to unravel threads, Soothing unfolding animations, No timers or penalties, 100+ handcrafted puzzles

**Features:** macOS Compatibility

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| starter bundle | $1.99 | one-time |
| coins300 | $1.99 | one-time |
| Revive Offer | $4.49 | one-time |
| coins900 | $4.99 | one-time |
| Beginner Bundle | $6.99 | one-time |
| Remove ADs | $7.99 | one-time |
| coins1900 | $9.99 | one-time |
| Remove ADs Bundles | $9.99 | one-time |
| Great Bundle | $13.99 | one-time |
| Epic Bundle | $19.99 | one-time |
| coins6000 | $24.99 | one-time |
| Super Bundle | $29.99 | one-time |
| coins36000 | $99.99 | one-time |


## Frequently asked questions

### Is Iknow? free?

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

### Is Wool Sort 3D free?

Wool Sort 3D is free to download, with in-app purchases available.

### Do Iknow? or Wool Sort 3D have ads?

Wool Sort 3D shows ads; Iknow? does not.

### Which is updated more often, Iknow? or Wool Sort 3D?

Iknow? ships an update every 19 months, and Wool Sort 3D every 10 days. Most recently, Iknow? was updated on October 1, 2026 and Wool Sort 3D on October 13, 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.*