# Bionic Heart 2 vs Vortex Sky

The clearest difference is review sentiment: Bionic Heart 2 at 83% against Vortex Sky's 0%. Vortex Sky's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 13.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Bionic Heart 2 sells 1 one-off in-app purchase. Vortex Sky asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Bionic Heart 2 | Vortex Sky |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/bionic-heart-2/id793154580/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 119 MB | 72 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Celso Riva](https://appshunter.io/developer/331419396) | [Ksenia Aprelkova](https://appshunter.io/developer/1379048664) |

## What reviewers say

### Bionic Heart 2

[App page](https://appshunter.io/ios/app/bionic-heart-2/id793154580)

Experience a mature sci-fi visual novel with branching storylines and multiple endings. Play as one of four characters, each with unique goals, and make choices that shape the narrative. Enjoy beautiful manga artwork in this highly replayable adventure.

**Highlights:** Mature sci-fi setting, Beautiful manga artwork, Four playable characters, Branching plot, Multiple endings, High replayability

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Story | $4.99 | one-time |


### Vortex Sky

[App page](https://appshunter.io/ios/app/vortex-sky-space-rusher/id1403737563)

Pilot a spaceship through a high-speed vortex tunnel, dodging obstacles and battling enemies. Customize your ship and test your reaction skills across amazing levels to become the best star pilot.

**Highlights:** High-speed vortex tunnel gameplay, Amazing levels, Customizable spaceships, Original voxel design, Addictive gameplay, Reaction skill challenges

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bionic Heart 2 free?

Bionic Heart 2 is free to download, with in-app purchases available.

### Is Vortex Sky free?

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

### Which is updated more often, Bionic Heart 2 or Vortex Sky?

Bionic Heart 2 ships an update monthly, and Vortex Sky monthly. Most recently, Bionic Heart 2 was updated on October 4, 2026 and Vortex Sky on October 7, 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.*