# Sudoku on Chalkboard vs 炫拼画板 FreDooling

The clearest difference is price: 炫拼画板 FreDooling at Free against Sudoku on Chalkboard's $2.99. 炫拼画板 FreDooling also leads on ads (none vs shown) and update cadence (every 4 days vs every 10 months). On in-app purchases and device support there is nothing between them.

炫拼画板 FreDooling is free to download; Sudoku on Chalkboard costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sudoku on Chalkboard ships an update every 10 months, 炫拼画板 FreDooling every 4 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sudoku on Chalkboard | 炫拼画板 FreDooling |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[2.3 (4 ratings)](https://appshunter.io/ios/app/sudoku-on-chalkboard/id581467260/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 19 MB | 21 MB |
| Requires iOS | 16.6 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [广东群宇互动科技有限公司](https://appshunter.io/developer/1019985641) |

## What reviewers say

### Sudoku on Chalkboard

[App page](https://appshunter.io/ios/app/sudoku-on-chalkboard/id581467260)

Experience the tactile feel of drawing on a chalkboard with this app's unique visual style. It offers an endless supply of dynamically generated puzzles, including a special 'Kid' level to encourage learning. Save your progress automatically across five difficulty settings.

**Highlights:** Chalkboard drawing effect, Dynamically generated Sudoku puzzles, Unlimited gameplay, Kid-friendly difficulty level, Automatic game saving, Five difficulty levels

**In-app purchases:** none


### 炫拼画板 FreDooling

[App page](https://appshunter.io/ios/app/fredooling/id1462614690)

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku on Chalkboard free?

Sudoku on Chalkboard costs $2.99, with no in-app purchases.

### Is 炫拼画板 FreDooling free?

炫拼画板 FreDooling is free to download, with no in-app purchases.

### Do Sudoku on Chalkboard or 炫拼画板 FreDooling have ads?

Sudoku on Chalkboard shows ads; 炫拼画板 FreDooling does not.

### Which is updated more often, Sudoku on Chalkboard or 炫拼画板 FreDooling?

Sudoku on Chalkboard ships an update every 10 months, and 炫拼画板 FreDooling every 4 days. Most recently, Sudoku on Chalkboard was updated on November 1, 2026 and 炫拼画板 FreDooling on November 3, 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.*