# TechTorah vs Science

The clearest difference is price: Science at $0.99 against TechTorah's $2.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

TechTorah costs $2.99 and Science $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TechTorah ships an update every 28 months, Science every 27 months. The most recent releases landed on June 7, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | TechTorah | Science |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 27 months** |
| Size | 794 MB | 23 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | **iPhone, iPod** | Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Keith Graden Greene](https://appshunter.io/developer/331183269) | [Illés László](https://appshunter.io/developer/316890672) |

## What reviewers say

### TechTorah

[App page](https://appshunter.io/ios/app/techtorah/id762900906)

**Features:** macOS Compatibility

**In-app purchases:** none


### Science

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

**In-app purchases:** none


## Frequently asked questions

### Is TechTorah free?

TechTorah costs $2.99, with no in-app purchases.

### Is Science free?

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

### Do TechTorah or Science have ads?

Neither TechTorah nor Science shows ads.

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

TechTorah ships an update every 28 months, and Science every 27 months. Most recently, TechTorah was updated on June 7, 2026 and Science on September 15, 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.*