# Stack Knife vs Hey Balls

The clearest difference is in-app purchases: Hey Balls at none against Stack Knife's 1. Stack Knife's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 19 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Stack Knife sells 1 one-off in-app purchase. Hey Balls asks for nothing beyond the download.

Stack Knife ships an update every 3 weeks, Hey Balls every 19 months. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Stack Knife | Hey Balls |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hey-balls-tap-hit-score/id1491657557/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 19 months |
| Monetization | — | Ad-supported |
| Size | 303 MB | 34 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wavelet Lab Inc.](https://appshunter.io/developer/1072996241) | [sekleung chang](https://appshunter.io/developer/867512958) |

## What reviewers say

### Stack Knife

[App page](https://appshunter.io/ios/app/stack-knife/id1453240354)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Hey Balls

[App page](https://appshunter.io/ios/app/hey-balls-tap-hit-score/id1491657557)

A party game designed for friends to enjoy together. It features two modes: one to pick a loser for fun challenges and another where players tap to shoot balls and achieve the highest score.

**Highlights:** Party game for friends, Tap to pick a loser, Challenges and dares, Score-based game mode, Tap to shoot balls

**In-app purchases:** none


## Frequently asked questions

### Is Stack Knife free?

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

### Is Hey Balls free?

Hey Balls is free to download, with no in-app purchases.

### Do Stack Knife or Hey Balls have ads?

Hey Balls shows ads; Stack Knife does not.

### Which is updated more often, Stack Knife or Hey Balls?

Stack Knife ships an update every 3 weeks, and Hey Balls every 19 months. Most recently, Stack Knife was updated on October 5, 2026 and Hey Balls on October 24, 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.*