# Bottle Flip TOP Challenge! vs Gravity OB1

The clearest difference is in-app purchases: Bottle Flip TOP Challenge! at none against Gravity OB1's 1. Bottle Flip TOP Challenge! also leads on iOS requirement (7.0 vs 13.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Gravity OB1 sells 1 one-off in-app purchase. Bottle Flip TOP Challenge! asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Bottle Flip TOP Challenge! | Gravity OB1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/bottle-flip-top-challenge/id1168349963/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free | — |
| Size | 96 MB | 25 MB |
| Requires iOS | **7.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Kostka](https://appshunter.io/developer/1093804493) | [Q8blog](https://appshunter.io/developer/380669318) |

## What reviewers say

### Bottle Flip TOP Challenge!

[App page](https://appshunter.io/ios/app/bottle-flip-top-challenge/id1168349963)

Test your bottle flipping skills by landing bottles on moving skateboards and elevators. Compete for the best results by flipping one or two bottles in parallel. Enjoy a simple, physics-based challenge.

**Highlights:** Flip bottles onto moving skateboards, Flip bottles on a running elevator, Flip one or two bottles in parallel, Measure flips for best results, Physics-based gameplay

**In-app purchases:** none


### Gravity OB1

[App page](https://appshunter.io/ios/app/gravity-ob1/id6788852525)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Game | $3.99 | one-time |


## Frequently asked questions

### Is Bottle Flip TOP Challenge! free?

Bottle Flip TOP Challenge! is free to download, with no in-app purchases.

### Is Gravity OB1 free?

Gravity OB1 is free to download, with in-app purchases available.

### Do Bottle Flip TOP Challenge! or Gravity OB1 have ads?

Neither Bottle Flip TOP Challenge! nor Gravity OB1 shows ads.

### Which is updated more often, Bottle Flip TOP Challenge! or Gravity OB1?

Bottle Flip TOP Challenge! ships an update every 5 days, and Gravity OB1 every 5 days. Most recently, Bottle Flip TOP Challenge! was updated on September 30, 2026 and Gravity OB1 on September 28, 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.*