Comparison

Supernova vs OpenIdle

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

Head to head
About

Supernova

An idle space tycoon game where you fuse hydrogen to grow and detonate stars. Earn permanent power-ups with each supernova to accelerate future runs. Features offline progress and a visually evolving star.

Highlights
  • Fuse hydrogen to create and grow stars
  • Offline progress and production
  • Visually evolving star stages
  • Prestige system with supernova cinematics
  • Deep multiplier stacking and research upgrades
  • Daily missions and streaks
  • Fully offline gameplay
Read full description

Fuse hydrogen into a living star. Grow it. Then blow it up — on purpose. SUPERNOVA is a premium-feel idle game about running a cosmic forge. Tap to spark fusion, build 12 generators from Hydrogen Wisp to Singularity Seed, and watch your star physically evolve — protostar, blue giant, red supergiant — until it is ready to collapse. Detonating it is the point: every supernova grants Neutron Cores, permanent power that makes each new universe faster than the last. WHY YOU'LL STAY • Real progress while you're away — production continues offline (extend the cap up to 24 hours with research), and a welcome-back doubler greets your return • A star that actually changes — five visual stages, rendered live, no canned art • Prestige that feels like a finale — a hand-built supernova cinematic, then a stronger start • Numbers that get gloriously big — Million, Septillion, and far beyond • Milestones every few minutes early on, deep multiplier stacking later • Daily missions and streaks that respect your time • 20 research upgrades that shape every run FAIR BY DESIGN • No ads. None. • No energy bars, no forced waits, no progress walls • Fully offline — no account, no sign-in, no internet required • Nothing collected, nothing tracked • Optional purchases exist (time warps, photons, a one-time Supporter Pack), and the entire game is balanced to be completed without spending anything THE LOOP 1. Tap your star and let generators forge Stardust 2. Hit ownership milestones — each one doubles a generator's output 3. Buy research, stack a Photon Surge boost, fill your Piggy Bank 4. Reach collapse readiness... and go SUPERNOVA 5. Keep your Neutron Cores forever. Start again, faster. Built by a solo developer in SwiftUI and SpriteKit. Every pixel is procedural — no asset packs, no stock art. Dark theme, tuned haptics, Reduce Motion respected. Your first universe is waiting. It starts with one atom.

About

OpenIdle

Features
Read full description

You've got a laptop, a credit card, and an opinion about AGI. Time to found your own AI lab. OpenIdle is a satirical idle game about the race to artificial general intelligence — and the way the finish line keeps politely moving. Found a company in a garage, train a model lineage, hire a workforce, generate hype, and allocate compute, data, and influence as you climb toward a post-AGI prestige loop. Hire, ship, hype, rebalance, and watch the target move with institutional grace. Cross an AGI goalpost and the definition quietly advances. Prestige, refound, and run the same race a little sharper. The numbers go up. The goalposts go further. - Bootstrap an AI lab from a garage to a sprawling research org - Train a model line with a personality — and opinions - Split compute, data, and influence across competing priorities - Ride market events, generate hype, ship on schedule - Cross AGI goalposts that refuse to hold still - Prestige into a faster, stranger version of the loop All companies and models depicted are fictional. The compute, tokens, alignment budgets, and moving goalposts they abstract are not. The treadmill, as far as we can tell, is perpetual.

Screenshots

Supernova4 screens
OpenIdle3 screens

Verdict

The call

The clearest difference is in-app purchases: OpenIdle at none against Supernova's 10. OpenIdle also leads on iOS requirement (15.0 vs 17.0). Supernova's advantage is device support (5 vs 3). On price and ads 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. Supernova sells 10 one-off in-app purchases. OpenIdle asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Supernova versus OpenIdle: the parameters behind the verdict, then further details
ParameterSupernovaOpenIdle
PriceFreeFree
Rating4.4 (52 ratings) — better—
Positive reviews90.0% of reviews—
Number of ratings52 — better—
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac, Apple TV, Vision Pro — betteriPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size15 MB15 MB
Age rating4+4+
DeveloperHUGO ANATOLE PAUL MORICEAUDawnsurfer Studios LLC

In-app purchases

10 purchases

Supernova

One-time10
  • 50 Photons$0.99
  • Time Warp: 4 Hours$1.99
  • Break the Piggy Bank$2.99
Show 7 more
  • Automation Core$3.99
  • Supporter Pack$4.99
  • Time Warp: 24 Hours$4.99
  • 300 Photons$4.99
  • 700 Photons$9.99
  • Time Warp: 7 Days$14.99
  • 1600 Photons$19.99
None

OpenIdle

No in-app purchases

Questions

Is Supernova free?
Supernova is free to download, with in-app purchases available.
Is OpenIdle free?
OpenIdle is free to download, with no in-app purchases.
Do Supernova or OpenIdle have ads?
Neither Supernova nor OpenIdle shows ads.

Other comparisons