Idle Universe vs KOZMONAUT
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Idle Universe
Tap to gather matter and create interstellar objects, from particles to galaxies. Objects automatically generate more matter, allowing for endless universe expansion. Unlock divine powers, upgrade objects, and utilize special abilities to grow your cosmic creation.
- Create 31 interstellar objects
- Unlock 24 Divine Powers
- Upgrade objects with multiple options
- Obtain Dark Matter for special abilities
- Gain Antimatter via prestige for permanent upgrades
- Compete on leaderboards
- Earn daily rewards and achievements
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Create your own universe in this new addictive idle game! First, you have to gather matter yourself by tapping; but once you've got enough matter to create a couple of objects in your universe, these will produce more matter automatically by colliding. Features: • Create many different interstellar objects - from tiny particles to your own planets, galaxies and even more! • Unlock Divine Powers, powerful permanent upgrades! • Speed up the growth of your universe with even more powerful Evolvements, transcendental upgrades that persist even through restarts! • Upgrade all of your objects in various ways! You will need to find a strategy that fits your playstyle to succeed in the late-game! • Obtain Dark Matter and use special abilities like Augmented Production and Tapping! • Get even bigger with prestige! Every time you restart the game, you will obtain Antimatter, which can be used to buy permanent super upgrades! • Join the competition with a global leaderboard! • Get daily rewards! • Earn Achievements, not just for the sake of it, but to increase your production even further! There're plenty of opportunities in the game - you can play for weeks and never get bored! Try our new idle game and create your very own universe :)
KOZMONAUT
Explore the universe, build a mining empire, and battle monsters in this incremental tapper game. Earn resources even when offline and accelerate growth through expeditions. Collect loot, complete missions, and compete on leaderboards.
- Build and upgrade mines for exponential resource gain
- Tap to battle endless waves of monsters and bosses
- Offline resource accumulation
- Expeditions to accelerate growth
- Daily missions and rotating vendor for rewards
- Global leaderboards for competition
- Cosmetic drops to customize character
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KOZMONAUT is the ultimate hybrid of your favorite mobile games. Scour the unknown universe building your mining empire, grabbing loot, vanquishing monsters, minibosses, and huge bosses. Tap away to build up more Spacedust to finance your mines which will accumulate resources even while you're away. But when you do come back, rapidly accelerate your growth by cleaning up the galaxy in your Expeditions. You are just a lone astronaut working for a mysterious entity called the Tendril Mind. Along the way you will meet mysterious beings offering loot and rewards, a diverse range of monsters and environments, and the insatiable desire to build an empire to unknown means. Gameplay Elements: -Build mines to earn more Spacedust at exponential rates. -Tap your way through endless waves of monsters and bosses collecting extra Spacedust and loot to increase your Spacedust gains and monster-vanquishing potential. -Defend your existing mines in high stakes, high rewards levels -Compete with other players around the world with leaderboards that measure both your Spacedust gains and your monster-vanquishing prowess. -Complete Daily Missions for even more rewards -Check out what's new in the Exchange, a rotating Vendor which sells powerful loot for currency that is earned in-game only! -Rare cosmetic drops from grinding planets which will change the appearance of KOZMO!
Screenshots
Verdict
The clearest difference is ratings volume: Idle Universe at 1.5K against KOZMONAUT's 6. Idle Universe also leads on review sentiment (65% vs 50%). KOZMONAUT's advantage is update cadence (every 4 days vs every 3 weeks) and rating (4.5 vs 4.3). On price, ads, in-app purchases and monetization model 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
Both are free to download. Idle Universe sells 7 one-off in-app purchases and KOZMONAUT sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
KOZMONAUT holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Idle Universe has 1.5K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 65% of Idle Universe's written reviews are positive against 50% of KOZMONAUT's, so the app with the better star average is not the one people write more warmly about.
Idle Universe ships an update every 3 weeks, KOZMONAUT every 4 days. The most recent releases landed on November 1, 2026 and October 18, 2026 respectively.
| Parameter | Idle Universe | KOZMONAUT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (1.5K ratings) | 4.5 (6 ratings) — better |
| Positive reviews | 65.2% of reviews — better | 50.0% of reviews |
| Number of ratings | 1.5K — better | 6 |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 299 MB | 62 MB |
| Age rating | 4+ | 9+ |
| Developer | Dominik Stallmann | Coast Media House LLC |
Customer experience
Idle Universe
KOZMONAUT
Bugs and requests
Idle Universe
Reported bugs
4 issues- Prestige button not working
- Ads not providing expected rewards
- Frequent crashes and freezes
- Incorrect offline progress tracking
Requested features
4 requests- Offline progress tracking
- More prestige layers and upgrades
- Better optimization for larger screens
- Improved tutorial and explanations
KOZMONAUT
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Idle Universe
- 250 Dark Matter$3.99
- Double Antimatter Gains$4.99
- +100% Transcendence Exp$4.99
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- Remove All Ads$8.99
- 1000 Dark Matter$9.99
- 2500 Dark Matter$24.99
- 10000 Dark Matter$69.99
KOZMONAUT
- KOZMIC PACK$2.99
Questions
Is Idle Universe free?
Is KOZMONAUT free?
Which has better reviews, Idle Universe or KOZMONAUT?
Do Idle Universe or KOZMONAUT have ads?
Which is updated more often, Idle Universe or KOZMONAUT?
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