Comparison

Letter Quest vs Universe Fly

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

Head to head
About

Letter Quest

This timed puzzle game merges letter tiles to spell words, offering both educational fun for children and mental agility challenges for adults. Compete with friends and global players on leaderboards.

Highlights
  • Merge letter tiles
  • Spell words
  • Timed challenges
  • Zen Mode for learning
  • Global leaderboards
  • GameCenter integration
Read full description

Letter Quest is a timed puzzle game fun for all ages -- challenging for adults and also educational for young learners when played in Zen Mode. Young children can learn the alphabet by merging letter tiles, which are then used to spell words, and adults can sharpen their mental agility by racing against the clock to spell as many words as possible before the board fills up with tiles. Compare scores against your GameCenter friends and against the rest of the world via Apple's Leaderboards!

About

Universe Fly

Features
Read full description

Explore the Limits of the Universe - "Get ready for an adventure and experience the thrilling journey of a spaceship through space! In this simulation game, you'll face the challenges of the sun, black holes, and Earth's gravity. With only one chance to click, can you make it back to Earth successfully?" One-Click Decisions - "In this unique game, every click determines the fate of your spaceship. Your goal is to navigate through the gravitational fields of the sun, black holes, and Earth using just one click. This is a game that tests your wits and skills. Are you ready to challenge yourself?" Battle of Gravities - "In this addictive game, you'll be up against the forces of gravity and must use a single click wisely to overcome the attraction of the sun, black holes, and Earth. With limited spaceship fuel, strategic thinking is the key to successfully returning to Earth." Space Odyssey - "Ready to embark on a journey into the unknown of space? In this unique simulation game, you'll explore the solar system, face gravity challenges, and attempt to return to Earth with just one click. Every game is a marvelous space odyssey!" Challenge Global Players - "Join space adventures with players from around the world, and prove your skills and intelligence. Share your best scores and see who can become the champion of the spaceship gravity challenge!"

Screenshots

Letter Quest4 screens
Universe Fly4 screens

Verdict

The call

The clearest difference is ads: Letter Quest at none against Universe Fly's shown. Letter Quest also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (11.0 vs 15.0). On price, in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Letter Quest ships an update every 2 weeks, Universe Fly every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Letter Quest versus Universe Fly: the parameters behind the verdict, then further details
ParameterLetter QuestUniverse Fly
PriceFreeFree
Rating4.8 (12 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings12 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size92 MB71 MB
Age rating4+4+
DeveloperFloyd RossSHIH-CHEN FAN

In-app purchases

None

Letter Quest

No in-app purchases

None

Universe Fly

No in-app purchases

Questions

Is Letter Quest free?
Letter Quest is free to download, with no in-app purchases.
Is Universe Fly free?
Universe Fly is free to download, with no in-app purchases.
Do Letter Quest or Universe Fly have ads?
Universe Fly shows ads; Letter Quest does not.
Which is updated more often, Letter Quest or Universe Fly?
Letter Quest ships an update every 2 weeks, and Universe Fly every 2 months. Most recently, Letter Quest was updated on October 24, 2026 and Universe Fly on October 25, 2026.

Other comparisons