# Science vs FEC

The clearest difference is price: FEC at Free against Science's $0.99. FEC also leads on iOS requirement (9.0 vs 13.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

FEC is free to download; Science costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Science ships an update every 27 months, FEC every 18 months. The most recent releases landed on September 15, 2026 and December 28, 2025 respectively.

## The numbers

| Metric | Science | FEC |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 18 months** |
| Size | 23 MB | 29 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | Apple TV | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Illés László](https://appshunter.io/developer/316890672) | [STARTAPP DESENVOLVIMENTO E MANUTENCAO DE SOFTWARE LTDA](https://appshunter.io/developer/1474026159) |

## What reviewers say

### Science

[App page](https://appshunter.io/ios/app/science-solarsystem/id1054480020)

**In-app purchases:** none


### FEC

[App page](https://appshunter.io/ios/app/fec/id1546025088)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Science free?

Science costs $0.99, with no in-app purchases.

### Is FEC free?

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

### Do Science or FEC have ads?

Neither Science nor FEC shows ads.

### Which is updated more often, Science or FEC?

Science ships an update every 27 months, and FEC every 18 months. Most recently, Science was updated on September 15, 2026 and FEC on December 28, 2025.

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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.*