Comparison

Unstable! vs Compound Quest

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

Head to head
About

Unstable!

Control a bar to defend falling balls from a central core. Collect power-ups to enhance your gameplay and see how long you can survive. Enjoy endless, casual fun with new levels and music.

Highlights
  • Defend falling balls
  • Move bar with touch/drag
  • Collect power-ups
  • Endless gameplay
  • New level, new song
  • Casual mechanics
Features
Read full description

Easy game! Touch or drag your finger on the screen to move the bar and defend the balls coming out of the core. How far can you go? Immortal? Invincible? Wonderful? Final Level? • Simple and casual mechanics. • A new level always a new song. • A new game idea for you to enjoy your time! • Endless gameplay! Free Play! Fast Replay! •Collect the power-ups, Slow, Double Points, Extra Ball and Expand Bar! Have fun. And don't forget! We'd love to hear your opinion! sign: amoraleite

About

Compound Quest

Features
Read full description

Compound Quest: Master Compound Words Through Play! Unlock the Magic of Compound Words in a Fun-Filled Adventure Discover how words like “sun” and “flower” come together to form “sunflower”—all while enjoying colorful visuals, smart interactions, and rewarding gameplay. Perfect for kids (5+), ESL learners, classrooms, and anyone who loves word puzzles, Compound Quest transforms vocabulary building into an exciting, educational experience. Why You’ll Love It • Pay Once, No Distractions: Enjoy a safe, ad-free environment with no in-app purchases. • Kid-Friendly & ESL-Friendly: Intuitive design and adaptive challenges for learners of all ages. • Build Vocabulary & Confidence: Strengthen your spelling and reading skills in a playful way. • Offline Play: Learn anytime, anywhere—ideal for travel or classrooms. Game Modes 1. Picture Match • Visual Compound Recognition: Combine two word parts (e.g., “eye + brow”) and choose the correct image. • Boost Word Association: Friendly illustrations reinforce reading and visual memory. • All Ages: Simple and intuitive for both kids and adults. 2. Word Puzzle • Fill in the Blank: Given the first half (like “sun + ?”), select the correct second half (“glasses,” “way,” “horse,” etc.). • Progressive Difficulty: Challenges increase as you progress, sharpening your vocabulary and spelling skills. • Immediate Feedback: Learn from mistakes and track improvements in real time. 3. Word Chain • Unlimited Combinations: Mix any two word fragments to see if they form a valid compound word. • Creative Experimentation: Encourages free exploration and deepens understanding of word formation. • Race Against Time: Form as many real words as possible before the clock runs out. Educational Benefits • Effective Learning: Master compound words through interactive play. • Reinforce Spelling & Reading: Engage multiple senses for better retention. • Deeper Language Comprehension: Understand how parts of words connect to form meaning. • Self-Paced Challenges: Build confidence at your own speed. Who Is It For? • Kids (4+) learning foundational reading skills. • ESL Learners of all ages seeking vocabulary practice. • Elementary & Middle School Students enhancing classroom lessons. • Teachers wanting an engaging educational tool. • Parents & Families looking for meaningful screen time. • Word Puzzle Fans eager to expand their word-building repertoire. Key Features • One-Time Purchase: No ads, no in-app purchases—completely distraction-free. • Kid-Safe Interface: Simple, intuitive navigation suitable for younger learners. • Vibrant Animations & Sound Effects: Keep learners motivated and immersed. • Progress Tracking: Monitor your mastery and celebrate achievements. • Offline-Ready: Perfect for travel or limited internet access. • Regular Updates: New compound words and puzzle content added over time. • Family Sharing Supported: Great for multi-child households. App Store Optimized • Universal Compatibility: Works seamlessly on iPhone and iPad. • Lightweight & Responsive: Quick downloads and smooth performance. • Educational & Fun: Balanced approach that appeals to both kids and adults. Why Choose Compound Quest? Because learning should be joyful, memorable, and creative. By focusing on compound words—a foundational element of English—Compound Quest offers an immersive experience that’s equal parts educational and entertaining. Watch your vocabulary and confidence grow as you play. Ready to Transform Your Vocabulary Journey? Download Compound Quest today and turn English word learning into an adventure you won’t forget!

Screenshots

Unstable!4 screens
Compound Quest4 screens

Verdict

The call

The clearest difference is ads: Compound Quest at none against Unstable!'s shown. Compound Quest also leads on update cadence (every 5 weeks vs every 4 months). On price, in-app purchases, device support and iOS requirement 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

Unstable! ships an update every 4 months, Compound Quest every 5 weeks. Both last shipped on October 7, 2026.

Scorecard2 real differences · 7 level
Unstable! versus Compound Quest: the parameters behind the verdict, then further details
ParameterUnstable!Compound Quest
PriceFreeFree
Rating3.8 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size153 MB26 MB
Age rating+44+
DeveloperLeonardo Amora毓鑫 戴

In-app purchases

None

Unstable!

No in-app purchases

None

Compound Quest

No in-app purchases

Questions

Is Unstable! free?
Unstable! is free to download, with no in-app purchases.
Is Compound Quest free?
Compound Quest is free to download, with no in-app purchases.
Do Unstable! or Compound Quest have ads?
Unstable! shows ads; Compound Quest does not.
Which is updated more often, Unstable! or Compound Quest?
Unstable! ships an update every 4 months, and Compound Quest every 5 weeks. Most recently, Unstable! was updated on October 7, 2026 and Compound Quest on October 7, 2026.

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