Comparison

Alien Planets vs WikiUp

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Alien Planets

Features
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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.

About

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

Alien Planets4 screens
WikiUp4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard4 real differences · 2 level
Alien Planets versus WikiUp: the parameters behind the verdict, then further details
ParameterAlien PlanetsWikiUp
Price$9.99Free — better
Update frequencyEvery 24 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS27.015.1 — better
Further details — not scored
Size51 MB47 MB
Age rating4+17+
DeveloperJose LealSercan ASLI

In-app purchases

None

Alien Planets

No in-app purchases

2 purchases

WikiUp

Subscriptions2
  • WikiUp PRO – Monthly$1.491 Month
  • WikiUp PRO – Annual$9.991 Year

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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