# Alien Planets vs WikiUp

The clearest difference is price: WikiUp at Free against Alien Planets's $9.99. WikiUp also leads on update cadence (weekly vs every 24 months) and iOS requirement (15.1 vs 27.0). Alien Planets's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

WikiUp is free to download; Alien Planets costs $9.99 up front. WikiUp sells 2 in-app purchases, starting at $1.49 per month. Alien Planets asks for nothing beyond the download.

Alien Planets ships an update every 24 months, WikiUp weekly. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Alien Planets | WikiUp |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Weekly** |
| Size | 51 MB | 47 MB |
| Requires iOS | 27.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jose Leal](https://appshunter.io/developer/1441468562) | [Sercan ASLI](https://appshunter.io/developer/1875502315) |

## What reviewers say

### Alien Planets

[App page](https://appshunter.io/ios/app/alien-planets/id1478121868)

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

**In-app purchases:** none


### WikiUp

[App page](https://appshunter.io/ios/app/wikiup-explore-swipe-learn/id6748560689)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WikiUp PRO – Monthly | $1.49 | per month |
| WikiUp PRO – Annual | $9.99 | per year |


## Frequently asked questions

### Is Alien Planets free?

Alien Planets costs $9.99, with no in-app purchases.

### Is WikiUp free?

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

### Do Alien Planets or WikiUp have ads?

Neither Alien Planets nor WikiUp shows ads.

### Which is updated more often, Alien Planets or WikiUp?

Alien Planets ships an update every 24 months, and WikiUp weekly. Most recently, Alien Planets was updated on November 11, 2026 and WikiUp on November 8, 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.*