Comparison

Idle Universe vs SoulStack

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

Head to head
About

Idle Universe

Features
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Embark on an Epic Galactic Journey with Idle Universe: Cosmic Space Adventure! Step into a mesmerizing universe where adventure knows no bounds. Idle Universe: Space Adventure invites you to explore the cosmos in a captivating idle clicker experience. From the moment you launch the game, you'll be thrust into a dazzling space odyssey, where the stars are yours to command and the galaxy is ripe for exploration. Discover the cosmos in this captivating idle game that lets you explore and expand your stellar empire - even offline! Idle Universe: Cosmic Space Adventure combines the best of idle clicker mechanics with immersive space simulation. Key Features: * Offline Gameplay: Explore the universe anytime, anywhere - no internet required! * Infinite Cosmic Exploration: Discover boundless galaxies filled with twinkling stars, mysterious planets, and awe-inspiring celestial wonders. * Idle Mechanics: Watch your stellar empire grow effortlessly. Collect resources, upgrade equipment, and unlock new celestial marvels even while you're away. * Space Simulation: Manage your cosmic fleet, mine asteroids, and colonize new worlds in this thrilling space tycoon experience. * Stunning Visuals: Lose yourself in beautifully crafted space environments, from shimmering constellations to breathtaking nebulae. * Upgrades & Customization: Enhance your clicking power, customize your space fleet, and unlock powerful boosters to accelerate your cosmic adventure. * Addictive Gameplay: Easy to learn, yet offering depth for seasoned strategists. Perfect for quick sessions or long-term galactic domination. Whether you're a casual gamer or a hardcore space enthusiast, Idle Universe: Cosmic Space Adventure offers an out-of-this-world experience that will keep you coming back for more. Download now and start your interstellar journey!

About

SoulStack

Features
Read full description

SOULSTACK โ€” a necromancer auto-battler of stacked souls. You were a master of death, stripped of power and cast into the Pit: an endless tower of the dead. But every foe you slay rises to serve you. Recruit them. Fuse them. Weave a legion that multiplies โ€” and climb. โ—† A LEGION THAT COMPOUNDS Draft undead, beasts, mages, and rogues into your warband. The power isn't flat stats โ€” it's synergy. Line up the right tribes, roles, and Authorities and your army doesn't add up, it MULTIPLIES. Find the engine, break the wall. โ—† CLIMB THE ENDLESS PIT Every run is a fresh draft. Scout the floor ahead, counter it, and climb โ€” the dead grow without limit as you rise. Fall, and you return to Level 1โ€ฆ but the servants you raised carry into the next life. Rise again. โ—† COMPETE WITH FRIENDS โ€” ON YOUR TIME Conquer the Pit and set your army to guard your star. Then raid your friends' stars across a season of standings. It's all ASYNC โ€” no live matches, no waiting, no always-online. Take a turn whenever you like; the war continues without you. โ—† FAIR BY DESIGN Premium โ€” buy once. No ads. No gacha. No pay-to-win: the unlock sells the full climb and the collection, never power. Competition is normalized, so skill wins, not spending. โ—† THEORYCRAFT-DEEP Deterministic combat and simulation-tuned balance reward mastery over luck. Dozens of units, items, and Authorities to combine โ€” the deeper you read the synergies, the higher you climb. Raise the dead. Stack the souls. Climb.

Screenshots

Idle Universe4 screens
SoulStack4 screens

Verdict

The call

The clearest difference is in-app purchases: Idle Universe at none against SoulStack's 1. On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. SoulStack sells 1 one-off in-app purchase. Idle Universe asks for nothing beyond the download.

UpkeepUpdate frequency

Idle Universe ships an update every 3 weeks, SoulStack every 2 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard1 real difference ยท 5 level
Idle Universe versus SoulStack: the parameters behind the verdict, then further details
ParameterIdle UniverseSoulStack
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details โ€” not scored
Size3 MB49 MB
Age rating4+12+
DeveloperMurat Can KOCXdge Technologies LLC

In-app purchases

None

Idle Universe

No in-app purchases

1 purchases

SoulStack

One-time1
  • Soulstack: Full Game$6.99

Questions

Is Idle Universe free?
Idle Universe is free to download, with no in-app purchases.
Is SoulStack free?
SoulStack is free to download, with in-app purchases available.
Do Idle Universe or SoulStack have ads?
Neither Idle Universe nor SoulStack shows ads.
Which is updated more often, Idle Universe or SoulStack?
Idle Universe ships an update every 3 weeks, and SoulStack every 2 weeks. Most recently, Idle Universe was updated on October 27, 2026 and SoulStack on October 25, 2026.

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