Alien Planets vs WikiUp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Alien Planets
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Alien Planets is a field guide to worlds that do not orbit our Sun. Somewhere out there, a year can last a few days, a sky can hold two suns, and a planet can be so close to its star that its surface is a permanent storm. This app turns those distant discoveries into something you can actually browse. Open it and move through confirmed exoplanets and the stars they circle. Each world comes with the details that make it real: how large it is, how massive, how long it takes to orbit, how far away it sits, and how it was found. Set a planet next to Earth or Jupiter and the scale snaps into place. A “super-Earth” stops being a label and starts looking like a place. The catalog keeps growing. New observations revise old numbers, and planets once listed as candidates become confirmed. Alien Planets stays with that living record, written in plain language, so you can follow the nearest known worlds, the strangest orbits, and the thin band astronomers call the habitable zone without getting lost in a research paper. Save the planets you want to come back to. Then keep going. The galaxy is full of new worlds, and most of them still have a story waiting.
WikiUp
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A New Fast and Fun Way to Discover Knowledge with WikiUp, the Essential App for Curious Minds WikiUp delivers Wikipedia’s vast knowledge right to your fingertips with a clean and modern interface, making learning quick, visual, and enjoyable. Say goodbye to long encyclopedia entries and discover fascinating facts simply by swiping! Just like Instagram Reels or TikTok, each swipe in WikiUp presents you with a new topic, a surprising fact, or a fascinating historical event. With its visually enhanced and fluid design, exploring knowledge has never been this engaging. Key Features • Swipe Feed (Knowledge Flow): A new piece of content awaits with every swipe. Save what interests you, share it with friends, or dive deeper into the full article. • Explore Screen: Access Wikipedia’s featured content with a single tap: ‣ On This Day ‣ Most Read ‣ Featured Article & Picture ‣ Trending News ‣ Birthdays & Anniversaries • Smart Search: Find topics instantly with lightning-fast search and explore content that matches your interests. • Personal Profile & Settings: ‣ Revisit saved articles anytime ‣ Choose between light, dark, or system theme ‣ Change the app language to personalize your experience How It Works • Discover new facts by simply swiping • Stay updated with Wikipedia’s daily featured content • Save and share your favorite articles • Customize your theme and language preferences Subscription Options and Pricing Enjoy more features and customization with WikiUp Premium: • Monthly: $1.49 (USD) • Annual: $9.99 (USD) Prices may vary based on your country and App Store region. Payment is charged to your Apple ID upon confirmation. Renewal and Cancellation Policy Subscriptions renew automatically. To cancel, turn off auto-renewal in your App Store account settings at least 24 hours before the current subscription period ends. Privacy Policy: https://wikiup.serkanasli.com/privacy-policy Terms of Use: https://wikiup.serkanasli.com/terms
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Alien Planets | WikiUp |
|---|---|---|
| Price | $9.99 | Free — better |
| Update frequency | Every 24 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 27.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 51 MB | 47 MB |
| Age rating | 4+ | 17+ |
| Developer | Jose Leal | Sercan ASLI |
In-app purchases
Alien Planets
No in-app purchases
WikiUp
- WikiUp PRO – Monthly$1.491 Month
- WikiUp PRO – Annual$9.991 Year






