Comparison

Idle Spirits vs Space Duo

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

Head to head
About

Idle Spirits

Summon, merge, and collect pixel-art spirits to build a thriving sanctuary. Your spirits gather resources even when you're away, ensuring progress. Enjoy a dynamic world with changing weather, special events, and a classic block-breaker mode.

Highlights
  • Summon and merge 24 pixel-art spirits
  • Grow and upgrade elemental homes
  • Offline progress for up to 24 hours
  • Dynamic world with real-time weather and events
  • Star Return (prestige) system
  • Classic block-breaker mini-game
Features
Read full description

An idle game where you summon pixel-art spirits, merge them, and grow a little sanctuary. Your spirits keep gathering mana while the app is closed, so the sanctuary is a bit livelier every time you come back. ◆ SUMMON AND MERGE Meet 24 spirits across six elements: Grove, Tide, Gale, Ember, Lumen and Umbra. Put two of the same spirit together and they merge, growing from little to grown to elder. Merging roughly doubles their output and frees up a home, so there's never a bad time to merge. ◆ GROW THEIR HOMES Level up a home for each element (a tree house, a spring, a windmill, a hearth, a light altar and a moon shrine) to house more spirits and boost production. The pixel art of each building changes as it grows. Spirits living in their own element's home produce twice as much. ◆ PROGRESS WHILE AWAY Production continues while the app is closed (up to 8 hours at first, 24 hours with research). Collect it all when you return. ◆ A LIVING WORLD Morning, day, dusk and night follow your real clock, with rain, wind, fog, snow and rainbow days. The time and weather change which elements shine. Shooting stars, wandering visitors, merchants and musicians, festivals that boost production 7x, and the Murk, a boss you tap to purify, all drop by now and then. ◆ BUILT TO LAST - Star Return (prestige): gather starlight and raise all production - Send spirits into the Deep to bring back dew and legend shards - 11 Star Book research upgrades, elemental awakening and 6 x 5 constellations - 6 legendary spirits and rare shiny variants (1%) - Complete the Spiritdex to earn elemental blessings ◆ MUSIC 55 original tracks that change with the scene, plus a jukebox to pick your favorite. You can also layer a 40Hz tone in settings. ◆ CLASSIC The original Idle Spirits block-breaker is still here as Classic in the menu, with all your collection records intact. Every sprite is drawn pixel by pixel with a hand-built rasterizer. Take your time and grow your own sanctuary.

About

Space Duo

Features
Read full description

Two orbs. One connection. Every gate asks a question: can you rotate in time? Space-Duo is a fast, neon arcade game about two orbs flying through space together. Tap to rotate your duo so it fits through the gap in each gate. Simple to learn, hard to master — and every run is a fresh chance to beat your best. THREE WAYS TO PLAY CLASSIC Fly through four levels that get faster and change shape as you go. From Level 3, gates slide sideways — swipe to line up and rotate to pass. Charge a shield that saves you from one mistake, grab golden crystals, and earn bonus points for close calls. SPEED DEMON Three lives, nonstop speed. Chain perfect passes to build a Rush streak and push your score higher before your lives run out. POLARITY Your orbs become a blue circle and a pink diamond, and each gate shows exactly where each one must go. Tap the left side to rotate left, the right side to rotate right. Match them perfectly to grow your SYNC streak. DAILY CHALLENGE A new challenge every day with its own rules and target score. MAKE IT YOURS Visit the store to unlock new orbs, trails, connection beams and animated space backgrounds. Earn stardust in every run, or buy the designs you love. Try every design live before you choose. All items are cosmetic and never change the gameplay. LEARN FROM EVERY RUN When you lose, a slow-motion replay shows what went wrong and how the duo should have been placed. Set a new best and share it with a score card. FEATURES - Three distinct modes plus a daily challenge - Simple one-touch controls - Shield, golden crystals and close-call bonuses - Cosmetic store with seven collections - Slow-motion replay and shareable score cards - English and Turkish - Haptic feedback - Play offline — no account needed Optional rewarded ads let you continue a run after losing. Watching is always your choice.

Screenshots

Idle Spirits4 screens
Space Duo4 screens

Verdict

The call

The clearest difference is in-app purchases: Idle Spirits at none against Space Duo's 10. Idle Spirits also leads on update cadence (every 3 weeks vs every 3 months). On price, ads, 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. Space Duo sells 10 one-off in-app purchases. Idle Spirits asks for nothing beyond the download.

UpkeepUpdate frequency

Idle Spirits ships an update every 3 weeks, Space Duo every 3 months. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Idle Spirits versus Space Duo: the parameters behind the verdict, then further details
ParameterIdle SpiritsSpace Duo
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size179 MB31 MB
Age rating4+4+
DeveloperKeiK LLCEMRE YILMAZ

In-app purchases

None

Idle Spirits

No in-app purchases

10 purchases

Space Duo

One-time10
  • Cyber Core Beam$0.99
  • Cyber Core Space$0.99
  • Black Nebula Orbs$0.99
Show 7 more
  • Black Nebula Trail$0.99
  • Black Nebula Space$0.99
  • Black Nebula Beam$0.99
  • Turkish Galaxy Orbs$0.99
  • Turkish Galaxy Trail$0.99
  • Turkish Galaxy Space$0.99
  • Turkish Galaxy Beam$0.99

Questions

Is Idle Spirits free?
Idle Spirits is free to download, with no in-app purchases.
Is Space Duo free?
Space Duo is free to download, with in-app purchases available.
Do Idle Spirits or Space Duo have ads?
Both Idle Spirits and Space Duo show ads.
Which is updated more often, Idle Spirits or Space Duo?
Idle Spirits ships an update every 3 weeks, and Space Duo every 3 months. Most recently, Idle Spirits was updated on November 9, 2026 and Space Duo on October 31, 2026.

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