# Void Reaper vs Alien Observer

The clearest difference is iOS requirement: Void Reaper at 13.0 against Alien Observer's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Void Reaper sells 14 one-off in-app purchases and Alien Observer sells 10 in-app purchases, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

Void Reaper ships an update every 2 weeks, Alien Observer every 3 weeks. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Void Reaper | Alien Observer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (75 ratings)](https://appshunter.io/ios/app/void-reaper-idle-rpg/id6757342365/reviews)** | — |
| Number of ratings | **75** | — |
| Positive reviews | 35.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 473 MB | 640 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | +12 |
| Developer | [Karate Gorilla](https://appshunter.io/developer/1866220545) | [Solebo LTD](https://appshunter.io/developer/1788368371) |

## What reviewers say

### Void Reaper

[App page](https://appshunter.io/ios/app/void-reaper-idle-rpg/id6757342365)

This casual idle RPG offers immediate action with auto-progression and offline rewards. Engage in an epic story of love, betrayal, and redemption as you descend into Hell to rescue your Princess, making dark choices along the way.

**Highlights:** Auto-progression and offline rewards, AFK and player-controlled combat, Crafting and forging demon relics, Impactful upgrades and talents, Bounties, contracts, and boss hunts, Interdimensional travel and corrupted worlds, Captivating epic story

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pinch of Gems | $0.49 | one-time |
| Start Bundle 3 | $2.99 | one-time |
| Handful of Gems | $2.99 | one-time |
| Doomhollow resources | $2.99 | one-time |
| All Resources | $4.99 | one-time |
| Infinite Dash | $4.99 | one-time |
| Cyber resources | $4.99 | one-time |
| Gloamwood resources | $4.99 | one-time |
| Demon Pack | $5.99 | one-time |
| Skip All Videos | $8.99 | one-time |
| Purse of Gems | $9.99 | one-time |
| Auto Kill Fly | $9.99 | one-time |
| Chest of Gems | $24.99 | one-time |
| Vault of Gems | $99.99 | one-time |


### Alien Observer

[App page](https://appshunter.io/ios/app/alien-observer/id6768049383)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Season Pass | $29.99 | per year |
| Full Reactor Refill | $1.99 | one-time |
| Data Storage License | $1.99 | one-time |
| Pet: Laika | $3.99 | one-time |
| DLC Pet: Ham | $3.99 | one-time |
| Pet: Cow | $3.99 | one-time |
| Pet: HAL9000 | $3.99 | one-time |
| Advanced Autopilot | $4.99 | one-time |
| DLC Pets Pack | $9.99 | one-time |
| Chapter 2 License | $19.99 | one-time |


## Frequently asked questions

### Is Void Reaper free?

Void Reaper is free to download, with in-app purchases available.

### Is Alien Observer free?

Alien Observer is free to download, with in-app purchases available.

### Do Void Reaper or Alien Observer have ads?

Both Void Reaper and Alien Observer show ads.

### Which is updated more often, Void Reaper or Alien Observer?

Void Reaper ships an update every 2 weeks, and Alien Observer every 3 weeks. Most recently, Void Reaper was updated on October 14, 2026 and Alien Observer on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*