# Stack by Stack! vs PebWorld

The clearest difference is ads: PebWorld at none against Stack by Stack!'s shown. Stack by Stack!'s advantage is iOS requirement (15.1 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 12, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Stack by Stack! | PebWorld |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (5 ratings)](https://appshunter.io/ios/app/pebworld-your-tiny-companion/id6770403164/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | — | Paid |
| Size | 94 MB | 13 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | +4 |
| Developer | [ByeongUk Choi](https://appshunter.io/developer/1872002178) | [Violet Rome LLC](https://appshunter.io/developer/380299557) |

## What reviewers say

### Stack by Stack!

[App page](https://appshunter.io/ios/app/stack-by-stack/id6760553499)

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

**In-app purchases:** none


### PebWorld

[App page](https://appshunter.io/ios/app/pebworld-your-tiny-companion/id6770403164)

Interact with a unique digital companion that grows and evolves based on your actions. It develops memories, personality, and tells its own stories, all processed privately on your device. Enjoy its presence with widgets and a companion Apple Watch app.

**Highlights:** Evolving unique companion, Memory and personality growth, Adventures and collectibles, Home Screen widgets, Apple Watch app, On-device AI processing

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Stack by Stack! free?

Stack by Stack! is free to download, with no in-app purchases.

### Is PebWorld free?

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

### Do Stack by Stack! or PebWorld have ads?

Stack by Stack! shows ads; PebWorld does not.

### Which is updated more often, Stack by Stack! or PebWorld?

Stack by Stack! ships an update every 4 days, and PebWorld every 4 days. Most recently, Stack by Stack! was updated on October 12, 2026 and PebWorld on October 20, 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.*