# Sushi Idle vs Supernova

The clearest difference is review sentiment: Supernova at 90% against Sushi Idle's 33%. Supernova also leads on ads (none vs shown) and update cadence (every 2 days vs every 6 weeks). Sushi Idle's advantage is rating (5.0 vs 4.4) and in-app purchases (none vs 10). On price there is nothing between them.

Both are free to download. Supernova sells 10 one-off in-app purchases. Sushi Idle asks for nothing beyond the download.

Sushi Idle holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Supernova has 52 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 33% of Sushi Idle's written reviews are positive against 90% of Supernova's, so the app with the better star average is not the one people write more warmly about.

Sushi Idle ships an update every 6 weeks, Supernova every 2 days. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Sushi Idle | Supernova |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sushi-idle/id6759832136/reviews)** | [4.4 (52 ratings)](https://appshunter.io/ios/app/supernova-idle-star-forge/id6779555607/reviews) |
| Number of ratings | 1 | **52** |
| Positive reviews | 33.3% of reviews | **90.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 119 MB | 15 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple TV, Vision Pro** |
| Age rating | 17+ | 4+ |
| Developer | [HAREPPO](https://appshunter.io/developer/604325074) | [HUGO ANATOLE PAUL MORICEAU](https://appshunter.io/developer/1845368412) |

## What reviewers say

### Sushi Idle

[App page](https://appshunter.io/ios/app/sushi-idle/id6759832136)

Tap your way to building a vast sushi empire. Hire chefs and construct factories to automate production, even when you're offline. Unlock powerful facilities and upgrade your tapping power to become a sushi tycoon.

**Highlights:** Tap to earn sushi, Hire chefs and build factories, Automated offline production, Unlock unique sushi facilities, Upgrade tapping power, Prestige system for permanent bonuses, Level up rewards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Supernova

[App page](https://appshunter.io/ios/app/supernova-idle-star-forge/id6779555607)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Photons | $0.99 | one-time |
| Time Warp: 4 Hours | $1.99 | one-time |
| Break the Piggy Bank | $2.99 | one-time |
| Automation Core | $3.99 | one-time |
| Supporter Pack | $4.99 | one-time |
| Time Warp: 24 Hours | $4.99 | one-time |
| 300 Photons | $4.99 | one-time |
| 700 Photons | $9.99 | one-time |
| Time Warp: 7 Days | $14.99 | one-time |
| 1600 Photons | $19.99 | one-time |


## Frequently asked questions

### Is Sushi Idle free?

Sushi Idle is free to download, with no in-app purchases.

### Is Supernova free?

Supernova is free to download, with in-app purchases available.

### Which has better reviews, Sushi Idle or Supernova?

Sushi Idle is rated higher. Sushi Idle averages 5.0 out of 5 from 1 ratings, while Supernova averages 4.4 from 52 ratings.

### Do Sushi Idle or Supernova have ads?

Sushi Idle shows ads; Supernova does not.

### Which is updated more often, Sushi Idle or Supernova?

Sushi Idle ships an update every 6 weeks, and Supernova every 2 days. Most recently, Sushi Idle was updated on September 21, 2026 and Supernova on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*