# Big Math vs Science Audio eBooks 1

The clearest difference is price: Big Math at $1.99 against Science Audio eBooks 1's $9.99. Big Math also leads on update cadence (every 11 months vs every 40 months). Science Audio eBooks 1's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 15.6). On ads and in-app purchases there is nothing between them.

Big Math costs $1.99 and Science Audio eBooks 1 $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Big Math ships an update every 11 months, Science Audio eBooks 1 every 40 months. The most recent releases landed on November 10, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Big Math | Science Audio eBooks 1 |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 40 months |
| Size | 18 MB | 22 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eaglet LLC](https://appshunter.io/developer/449193510) | [KnowleMedia](https://appshunter.io/developer/1163260545) |

## What reviewers say

### Big Math

[App page](https://appshunter.io/ios/app/big-math/id591862472)

**Features:** macOS Compatibility

**In-app purchases:** none


### Science Audio eBooks 1

[App page](https://appshunter.io/ios/app/science-audio-ebooks-1/id6448882369)

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

**In-app purchases:** none


## Frequently asked questions

### Is Big Math free?

Big Math costs $1.99, with no in-app purchases.

### Is Science Audio eBooks 1 free?

Science Audio eBooks 1 costs $9.99, with no in-app purchases.

### Do Big Math or Science Audio eBooks 1 have ads?

Neither Big Math nor Science Audio eBooks 1 shows ads.

### Which is updated more often, Big Math or Science Audio eBooks 1?

Big Math ships an update every 11 months, and Science Audio eBooks 1 every 40 months. Most recently, Big Math was updated on November 10, 2026 and Science Audio eBooks 1 on November 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*