# Stack 8 vs Voltline

The clearest difference is update cadence: Voltline at every 4 weeks against Stack 8's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Stack 8 sells 2 one-off in-app purchases and Voltline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Stack 8 ships an update every 5 months, Voltline every 4 weeks. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Stack 8 | Voltline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/stack-8/id1093455092/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 13 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [THE RISE COLLECTION](https://appshunter.io/developer/1000072797) | [Olof Petterson](https://appshunter.io/developer/1808256024) |

## What reviewers say

### Stack 8

[App page](https://appshunter.io/ios/app/stack-8/id1093455092)

Tap to perfectly stack pixels in this endless challenge. One mistake means losing a pixel. Test your reflexes and precision to keep stacking.

**Highlights:** Endless gameplay, Precise tapping mechanics, Pixel stacking challenge, Reflex and precision testing, Simple one-tap controls

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All | $1.99 | one-time |
| Remove Ads | $1.99 | one-time |


### Voltline

[App page](https://appshunter.io/ios/app/voltline-tower-defense/id6760507113)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Voltline PRO | $2.99 | one-time |


## Frequently asked questions

### Is Stack 8 free?

Stack 8 is free to download, with in-app purchases available.

### Is Voltline free?

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

### Do Stack 8 or Voltline have ads?

Neither Stack 8 nor Voltline shows ads.

### Which is updated more often, Stack 8 or Voltline?

Stack 8 ships an update every 5 months, and Voltline every 4 weeks. Most recently, Stack 8 was updated on October 9, 2026 and Voltline 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.*