Comparison

Spark vs Planetary Idle

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

Head to head
About

Spark

Guide the evolution of the cosmos as an ethereal Spark of Life. Assimilate raw materials and influence cosmic development through incremental gameplay. Unlock resources, progress through story elements, and utilize a prestige mechanic for faster advancement.

Highlights
  • Multiple unlockable and upgradeable resources
  • Story elements that unfold with progress
  • Prestige mechanic for accelerated progression
  • Altar of Knowledge for powerful upgrades
  • Intuitive UI with organic learning
  • Optional ads for in-game bonuses
Features
Read full description

Spark is an idle incremental game in which you take on the role of an ethereal Spark of Life that bursts into existence. Assimilate the raw material that exists around you and use your influence to guide the evolution of the Cosmos. Click on the Matter button to begin amassing your influence. When you feel ready, swipe left and begin evolving. Features: - Multiple resources that can be unlocked, purchased, and upgraded - Story elements that appear as player progresses - Prestige mechanic that allows player to start from beginning; progressing faster than before - New "Altar of Knowledge" Mechanic that allows players to spend points gained from the prestige mechanic for new sets of powerful upgrades - Simple, intuitive UI that teaches the game organically as the player progresses - Advertisements are completely optional, and can be watched for an in-game bonus

About

Planetary Idle

Explore planets with a retro sci-fi idle theme. Hire scientists for passive income, tap for boosts, and research expeditions for discoveries. Prestige to reset with permanent upgrades and unlock perks with rare QBits.

Highlights
  • Hire Scientists for passive income
  • Tap to boost active income
  • Research expeditions for discoveries
  • Prestige system with permanent upgrades
  • Earn QBits for powerful perks
  • Offline progress for 6 hours
Features
Read full description

Discover planets with a retro sci-fi idle theme with Planetary Idle! • Hire Scientists - Generate steady passive income and scale your operation. • Tap to Boost - Tap for extra cash when you’re active. • Research Expeditions - Spend money and brave scientists on one-way missions for discoveries and income bonuses! • Prestige - Reset, keep permanent upgrades, blast past your previous best. • QBits & Upgrades - Earn rare QBits and unlock powerful perks. • Play Your Pace - Short bursts or long idles; progress for 6 hours when offline. • Game Center - Many achievements to unlock!

Screenshots

Spark4 screens
Planetary Idle4 screens

Verdict

The call

Spark and Planetary Idle both sit at 4.8 stars, but that hides the real split: 94% of Spark's written reviews are positive against 50% of Planetary Idle's. Spark also leads on in-app purchases (none vs 3) and ads (none vs shown). Planetary Idle's advantage is update cadence (weekly vs every 3 weeks). On price, rating, monetization model 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. Planetary Idle sells 3 one-off in-app purchases. Spark asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Spark against 4.8 for Planetary Idle. Both are backed by a comparable volume of ratings — 233 and 77 respectively. Written reviews are what separate them: 94% of Spark's written reviews are positive against 50% of Planetary Idle's.

UpkeepUpdate frequency

Spark ships an update every 3 weeks, Planetary Idle weekly. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
Spark versus Planetary Idle: the parameters behind the verdict, then further details
ParameterSparkPlanetary Idle
PriceFreeFree
Rating4.8 (233 ratings)4.8 (77 ratings)
Positive reviews94.3% of reviews — better50.0% of reviews
Number of ratings233 — better77
Update frequencyEvery 3 weeksWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better17
Further details — not scored
Size75 MB112 MB
Age rating4+4+
DeveloperDeuski Games Limited Liability CompanyRoberto Frias Nerio

Customer experience

Spark

All ratings233 ratings
Positive94.8%
Neutral2.6%
Negative2.6%
Written reviews35 reviews
Positive94.3%
Neutral2.9%
Negative2.9%

Planetary Idle

All ratings77 ratings
Positive96.1%
Neutral1.3%
Negative2.6%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Spark

Reported bugs

2 issues
  • Ad not loading
  • Game broke (production NaN, destruction bonus INF)

Requested features

7 requests
  • More updates
  • Continue the story
  • Add more evolution upgrades
  • Add something at the end (e.g., restart with multiplier)
  • Pay to have 2X multiplier forever
Show 2 more
  • Add Altar of Knowledge (if not unlocked)
  • More content

Planetary Idle

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Spark

No in-app purchases

3 purchases

Planetary Idle

One-time3
  • Booster Pack$0.99
  • Research Pack$2.99
  • Quantum Pack$6.99

Questions

Is Spark free?
Spark is free to download, with no in-app purchases.
Is Planetary Idle free?
Planetary Idle is free to download, with in-app purchases available.
Which has better reviews, Spark or Planetary Idle?
Spark and Planetary Idle are both rated 4.8 out of 5 on the App Store, from 233 and 77 ratings respectively.
Do Spark or Planetary Idle have ads?
Planetary Idle shows ads; Spark does not.
Which is updated more often, Spark or Planetary Idle?
Spark ships an update every 3 weeks, and Planetary Idle weekly. Most recently, Spark was updated on October 5, 2026 and Planetary Idle on October 1, 2026.

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