# Donut Stack Sort vs Penguins Flow

The clearest difference is ads: Donut Stack Sort at none against Penguins Flow's shown. Donut Stack Sort also leads on iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Donut Stack Sort sells 19 one-off in-app purchases and Penguins Flow sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Donut Stack Sort | Penguins Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (167 ratings)](https://appshunter.io/ios/app/donut-stack-sort/id6476919327/reviews)** | — |
| Number of ratings | **167** | — |
| Positive reviews | 25.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 429 MB | 103 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tran Tien Thanh](https://appshunter.io/developer/1713107024) | [OTTERPAW STUDIO PTE. LTD.](https://appshunter.io/developer/1743632569) |

## What reviewers say

### Donut Stack Sort

[App page](https://appshunter.io/ios/app/donut-stack-sort/id6476919327)

A minimalistic puzzle game where players merge hexagonal number blocks to create higher numbers. This addictive game challenges your brain, improving memory, concentration, and reflexes.

**Highlights:** Hexagon number block merging, Mind-sharpening gameplay, Improves memory and concentration, Addictive puzzle experience, Minimalistic design

**Features:** macOS Compatibility

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin 1 | $0.99 | one-time |
| Premium Skin 2 | $0.99 | one-time |
| Premium Skin 1 | $0.99 | one-time |
| Remove ads | $1.99 | one-time |
| Super Spin | $3.99 | one-time |
| Ticket 1 | $3.99 | one-time |
| Coin 2 | $4.99 | one-time |
| No ads bundle | $4.99 | one-time |
| Mini Bundle | $4.99 | one-time |
| Piggy bank | $4.99 | one-time |
| Safe Pack | $4.99 | one-time |
| Ticket 2 | $7.99 | one-time |
| Coin 3 | $9.99 | one-time |
| One Plus One | $9.99 | one-time |
| Large Bundle | $9.99 | one-time |
| Ultimate Donut Pass | $9.99 | one-time |
| All bundle | $19.99 | one-time |
| Coin 4 | $29.99 | one-time |
| Coin 5 | $49.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive gameplay
- 🎨 Beautiful design and graphics
- 💡 Good core game mechanics
- 💖 Enjoyable for anxiety relief

**What reviewers complain about**

- 广告 Excessive and intrusive ads
- 💸 Deceptive advertising practices
- 😩 Ads cover half the screen
- ✋ Ads block gameplay
- ❌ Ads prevent game progression

**Reported bugs**

- Ads freeze the game
- Ads don't close
- Ads appear mid-game and block screen
- Purchased ad-free experience still has ads
- In-app purchases not credited (e.g., coins)

**Requested features**

- More levels needed
- Update the game with new content
- Fix the ad issue
- Improve ad removal value
- Change or remove the white donut (hard to see)


### Penguins Flow

[App page](https://appshunter.io/ios/app/penguins-flow/id6795430173)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack 1 | $1.99 | one-time |
| Coin Pack 2 | $5.99 | one-time |
| No Ads | $7.99 | one-time |
| Game Bundle 1 | $7.99 | one-time |
| Flow Pass Premium | $9.99 | one-time |
| Coin Pack 3 | $10.99 | one-time |
| No Ads Bundle | $12.99 | one-time |
| Game Bundle 2 | $16.99 | one-time |
| Coin Pack 4 | $24.99 | one-time |
| Game Bundle 3 | $27.99 | one-time |


## Frequently asked questions

### Is Donut Stack Sort free?

Donut Stack Sort is free to download, with in-app purchases available.

### Is Penguins Flow free?

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

### Do Donut Stack Sort or Penguins Flow have ads?

Penguins Flow shows ads; Donut Stack Sort does not.

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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.*