# Cosmos Combos vs Feynman rules

The clearest difference is in-app purchases: Feynman rules at none against Cosmos Combos's 4. Cosmos Combos's advantage is iOS requirement (7.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Cosmos Combos sells 4 one-off in-app purchases. Feynman rules asks for nothing beyond the download.

## The numbers

| Metric | Cosmos Combos | Feynman rules |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cosmos-combos/id1167565440/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Monetization | Free with in-app purchases | — |
| Size | 95 MB | 6 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jakub Pokorski](https://appshunter.io/developer/1136216475) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Cosmos Combos

[App page](https://appshunter.io/ios/app/cosmos-combos/id1167565440)

Defend Earth from incoming meteorites by building forcefields and using boosters. Collect coins to unlock new rockets and challenge friends on leaderboards. How long can you survive the cosmic onslaught?

**Highlights:** Tap to build forcefield, Double-tap to use booster, Collect coins, Unlock new rockets, Leaderboards, Challenge friends

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 coins | $0.99 | one-time |
| 300 coins | $1.99 | one-time |
| Remove ads | $1.99 | one-time |
| 1500 coins | $6.99 | one-time |


### Feynman rules

[App page](https://appshunter.io/ios/app/feynman-rules/id6478752222)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cosmos Combos free?

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

### Is Feynman rules free?

Feynman rules is free to download, with no in-app purchases.

### Do Cosmos Combos or Feynman rules have ads?

Neither Cosmos Combos nor Feynman rules shows ads.

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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.*