Idle.py vs Supernova
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Idle.py
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Idle.py — a Python tutorial disguised as an idle game. Learn Python and modern AI engineering by playing. Tap to generate FLOPs (floating-point operations), then spend them on Compute Units that keep earning while you're away. Every Compute Unit you unlock — from your first variable to an AGI Lab — ships with a hand-written lesson, code samples, a quick-check quiz, and a 50-question practice bank. Real coding lessons. Real curriculum. No filler. THE COMPUTE UNIT LADDER • Variable, Function, Class, Module — Python's atoms. • Tensor, Neuron, Layer — what every model is built from. • Attention Head, Transformer Block — the 2017 idea that ate AI. • Foundation Model, Agent — pretraining, fine-tuning, tool-using LLMs. • GPU Cluster — distributed training: DDP, tensor parallelism, pipeline parallelism, NCCL. • AGI Lab — the recursive endgame. PYTHON PROGRAMMING BASICS (always free, always on) Lists & Tuples · Dicts & Sets · Strings & f-strings · Control Flow · Comprehensions · Iterators & Generators · Decorators · Exception Handling. PRACTICE BANKS Every lesson has 50 questions. Correct +1 knowledge, wrong −1 — drift below a bucket and your bonus drops. Option order reshuffles every draw, so you learn the answer, not the position. THREE REWARD AXES • Mastery (+1% per level) — earned from quizzes, capped at three per Compute Unit. • Knowledge (flat FLOPs/sec bonus) — earned from practice banks. • Insight (compounding multiplier) — earned from retraining the run. AI LANDMARKS 27 lifetime-FLOP milestones from "Hello, World" through GPT-4 and beyond. Each grants a permanent tap multiplier. The history of artificial intelligence is your scoreboard. TRANSCENDENCE (hardcore loop) Stack ten GPU Clusters and you can transcend: wipe the run for a permanent global multiplier and one Transcendence Unit (TU). Spend TU to unlock Singularity and ASI — the loop above the loop. NO ADS. NO SUBSCRIPTIONS. Optional one-time purchases only: • Founder Pack — permanent ×2 multiplier on FLOPs and tap. • Mentor Pack — advanced curriculum (LoRA, RLHF, Mixture of Experts, Evals). • Time skips and insight packs as small consumables. WHO IT'S FOR • Beginners who want a more rewarding Python tutorial than another video course. • Engineers picking up the modern AI engineering stack from the ground up. • Anyone who wants their idle game to teach them something real. Idle.py respects your time. Progress saves automatically. Offline FLOPs are credited on launch. No popup ads. No timers built to wear you down. Just the curriculum, the loop, and the math.
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is update cadence: Supernova at every 2 days against Idle.py's weekly. Supernova also leads on device support (5 vs 3). Idle.py's advantage is iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases 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.py sells 8 one-off in-app purchases and Supernova sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Idle.py ships an update weekly, Supernova every 2 days. The most recent releases landed on October 11, 2026 and October 21, 2026 respectively.
| Parameter | Idle.py | Supernova |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.4 (73 ratings) — better |
| Positive reviews | — | 77.8% of reviews |
| Number of ratings | — | 73 — better |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple TV, Vision Pro — better |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 39 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Byte Insights Limited | HUGO ANATOLE PAUL MORICEAU |
In-app purchases
Idle.py
- Mentor PackFree
- +5 Insight$0.99
- Skip 4 Hours$0.99
Show 5 moreShow fewer
- Skip 24 Hours$1.99
- +15 Insight$2.99
- Founder Pack$3.99
- Skip 7 Days$3.99
- Sandbox Mode$19.99
Supernova
- 50 Photons$0.99
- Time Warp: 4 Hours$1.99
- Break the Piggy Bank$2.99
Show 7 moreShow fewer
- 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









