# Donut Stack Sort vs Neon Spire

The clearest difference is in-app purchases: Neon Spire at none against Donut Stack Sort's 19. Neon Spire also leads on update cadence (every 4 days vs every 3 weeks). Donut Stack Sort's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Donut Stack Sort sells 19 one-off in-app purchases. Neon Spire asks for nothing beyond the download.

Donut Stack Sort ships an update every 3 weeks, Neon Spire every 4 days. The most recent releases landed on June 10, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Donut Stack Sort | Neon Spire |
| --- | --- | --- |
| 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 | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 429 MB | 75 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) | [HARADA ISSEI](https://appshunter.io/developer/6799936385) |

## 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 |


### Neon Spire

[App page](https://appshunter.io/ios/app/neon-spire-stack-tower/id6799936383)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Donut Stack Sort free?

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

### Is Neon Spire free?

Neon Spire is free to download, with no in-app purchases.

### Do Donut Stack Sort or Neon Spire have ads?

Neon Spire shows ads; Donut Stack Sort does not.

### Which is updated more often, Donut Stack Sort or Neon Spire?

Donut Stack Sort ships an update every 3 weeks, and Neon Spire every 4 days. Most recently, Donut Stack Sort was updated on June 10, 2026 and Neon Spire on September 27, 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.*