# Doo Klotski vs SpanThread

The clearest difference is in-app purchases: Doo Klotski at none against SpanThread's 1. Doo Klotski also leads on iOS requirement (15.0 vs 17.0). SpanThread's advantage is update cadence (daily vs every 3 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. SpanThread sells 1 one-off in-app purchase. Doo Klotski asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Doo Klotski against 5.0 for SpanThread. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Doo Klotski ships an update every 3 weeks, SpanThread daily. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Doo Klotski | SpanThread |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/doo-klotski/id6444450575/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/spanthread/id6816379796/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 134 MB | 142 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [晋豫 张](https://appshunter.io/developer/1654669843) | [Hayden Fuhrer](https://appshunter.io/developer/1840724376) |

## What reviewers say

### Doo Klotski

[App page](https://appshunter.io/ios/app/doo-klotski/id6444450575)

A classic sliding block puzzle game with 480 unique levels to test your logic and strategy. Move the largest block to the exit by carefully maneuvering obstacles. Offers detailed solutions and progress tracking for an engaging brain-training experience.

**Highlights:** 480 unique levels, Realistic sliding block touch controls, Detailed solutions for each level, Progress and best record tracking, Suitable for all ages

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

**In-app purchases:** none


### SpanThread

[App page](https://appshunter.io/ios/app/spanthread/id6816379796)

A vibrant puzzle game where players untangle layered strings by strategically cutting them in the correct order. It offers a variety of game modes, from handcrafted levels to competitive matches, challenging logic and precision.

**Highlights:** 1,000 handcrafted levels, Daily Board challenges, Live Versus matches, Time Attack mode, Perfect Cuts mode, Endless mode, Unlockable themes and sounds

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Doo Klotski free?

Doo Klotski is free to download, with no in-app purchases.

### Is SpanThread free?

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

### Which has better reviews, Doo Klotski or SpanThread?

Doo Klotski and SpanThread are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Doo Klotski or SpanThread have ads?

Both Doo Klotski and SpanThread show ads.

### Which is updated more often, Doo Klotski or SpanThread?

Doo Klotski ships an update every 3 weeks, and SpanThread daily. Most recently, Doo Klotski was updated on October 7, 2026 and SpanThread on October 20, 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.*