# Science vs Periodic Table Clock

The clearest difference is update cadence: Periodic Table Clock at every 10 months against Science's every 27 months. On price, ads, in-app purchases and device support there is nothing between them.

Science costs $0.99 and Periodic Table Clock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Science ships an update every 27 months, Periodic Table Clock every 10 months. The most recent releases landed on September 15, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Science | Periodic Table Clock |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 10 months** |
| Size | 23 MB | 2 MB |
| Requires iOS | **13.0** | 14.3 |
| Devices | Apple TV | Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Illés László](https://appshunter.io/developer/316890672) | [Jim Haungs](https://appshunter.io/developer/1498282259) |

## What reviewers say

### Science

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

**In-app purchases:** none


### Periodic Table Clock

[App page](https://appshunter.io/ios/app/periodic-table-clock/id1529484113)

**In-app purchases:** none


## Frequently asked questions

### Is Science free?

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

### Is Periodic Table Clock free?

Periodic Table Clock costs $0.99, with no in-app purchases.

### Do Science or Periodic Table Clock have ads?

Neither Science nor Periodic Table Clock shows ads.

### Which is updated more often, Science or Periodic Table Clock?

Science ships an update every 27 months, and Periodic Table Clock every 10 months. Most recently, Science was updated on September 15, 2026 and Periodic Table Clock on June 4, 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.*