# Mothership Idle Tower Defense vs Supernova

The clearest difference is ads: Supernova at none against Mothership Idle Tower Defense's shown. Supernova also leads on update cadence (every 2 days vs every 9 days) and ratings volume (80 vs 4). Mothership Idle Tower Defense's advantage is review sentiment (100% vs 76%) and rating (4.8 vs 4.5). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. Mothership Idle Tower Defense sells 7 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.

Mothership Idle Tower Defense holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Supernova has 80 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Mothership Idle Tower Defense's written reviews are positive against 76% of Supernova's.

Mothership Idle Tower Defense ships an update every 9 days, Supernova every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Mothership Idle Tower Defense | Supernova |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/mothership-idle-tower-defense/id6444686527/reviews)** | [4.5 (80 ratings)](https://appshunter.io/ios/app/supernova-idle-star-forge/id6779555607/reviews) |
| Number of ratings | 4 | **80** |
| Positive reviews | **100.0% of reviews** | 76.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 146 MB | 15 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple TV, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Bern Games Inc.](https://appshunter.io/developer/1655004923) | [HUGO ANATOLE PAUL MORICEAU](https://appshunter.io/developer/1845368412) |

## What reviewers say

### Mothership Idle Tower Defense

[App page](https://appshunter.io/ios/app/mothership-idle-tower-defense/id6444686527)

Engage in a roguelike tower defense experience set in space. Collect unique upgrades and power-ups to customize your ships and advance through challenging enemy waves. Enjoy a minimalistic design with intuitive controls for a relaxing yet strategic gameplay session.

**Highlights:** 20+ unique ship upgrades, 40+ randomized power-ups, Collectible power gems, Simple, intuitive controls, Active developer support, Roguelike progression

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No More Ads | $3.99 | one-time |
| 200 Polyhedrons | $4.99 | one-time |
| 400 Polyhedrons | $6.99 | one-time |
| Mothership Pack | $8.99 | one-time |
| 800 Polyhedrons | $13.99 | one-time |
| Squadron Pack | $17.99 | one-time |
| 2000 Polyhedrons | $29.99 | one-time |


### 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 Mothership Idle Tower Defense free?

Mothership Idle Tower Defense is free to download, with in-app purchases available.

### Is Supernova free?

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

### Which has better reviews, Mothership Idle Tower Defense or Supernova?

Mothership Idle Tower Defense is rated higher. Mothership Idle Tower Defense averages 4.8 out of 5 from 4 ratings, while Supernova averages 4.5 from 80 ratings.

### Do Mothership Idle Tower Defense or Supernova have ads?

Mothership Idle Tower Defense shows ads; Supernova does not.

### Which is updated more often, Mothership Idle Tower Defense or Supernova?

Mothership Idle Tower Defense ships an update every 9 days, and Supernova every 2 days. Most recently, Mothership Idle Tower Defense was updated on November 3, 2026 and Supernova on November 5, 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.*