# Bubble Tap Challenge vs Backpack Alpaca

The clearest difference is in-app purchases: Bubble Tap Challenge at none against Backpack Alpaca's 10. Bubble Tap Challenge also leads on ads (none vs shown) and update cadence (daily vs every 3 months). Backpack Alpaca's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17). On price there is nothing between them.

Both are free to download. Backpack Alpaca sells 10 one-off in-app purchases. Bubble Tap Challenge asks for nothing beyond the download.

Bubble Tap Challenge ships an update daily, Backpack Alpaca every 3 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Bubble Tap Challenge | Backpack Alpaca |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 3 months |
| Size | 5 MB | 146 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sakinah Wali](https://appshunter.io/developer/1793297286) | [Guangzhou Duoyi Trading Co., Ltd](https://appshunter.io/developer/1620123861) |

## What reviewers say

### Bubble Tap Challenge

[App page](https://appshunter.io/ios/app/bubble-tap-challenge/id6743230283)

**Features:** macOS Compatibility

**In-app purchases:** none


### Backpack Alpaca

[App page](https://appshunter.io/ios/app/backpack-alpaca/id6746483389)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Movie Tickets × 5 | $0.29 | one-time |
| Founder's Bounty | $0.99 | one-time |
| Advertising Voucher Package | $0.99 | one-time |
| Limited-Time Legendary Package | $0.99 | one-time |
| Wish Package | $0.99 | one-time |
| Movie Tickets × 10 | $0.99 | one-time |
| Movie Tickets × 25 | $1.99 | one-time |
| Skin Package | $4.79 | one-time |
| Golden Monthly Card | $4.79 | one-time |
| Premium Monthly Card | $9.79 | one-time |


## Frequently asked questions

### Is Bubble Tap Challenge free?

Bubble Tap Challenge is free to download, with no in-app purchases.

### Is Backpack Alpaca free?

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

### Do Bubble Tap Challenge or Backpack Alpaca have ads?

Backpack Alpaca shows ads; Bubble Tap Challenge does not.

### Which is updated more often, Bubble Tap Challenge or Backpack Alpaca?

Bubble Tap Challenge ships an update daily, and Backpack Alpaca every 3 months. Most recently, Bubble Tap Challenge was updated on October 25, 2026 and Backpack Alpaca on October 25, 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.*