# Big Math vs Reading Train

The clearest difference is price: Big Math at $1.99 against Reading Train's $9.99. Reading Train's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 15.6). On update cadence, ads and in-app purchases there is nothing between them.

Big Math costs $1.99 and Reading Train $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, Reading Train every 13 months. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Big Math | Reading Train |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 13 months |
| Size | 18 MB | 870 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eaglet LLC](https://appshunter.io/developer/449193510) | [The Learning Station, LLC](https://appshunter.io/developer/702227887) |

## What reviewers say

### Big Math

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Reading Train

[App page](https://appshunter.io/ios/app/reading-train-my-first-books/id1201673979)

**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 Reading Train free?

Reading Train costs $9.99, with no in-app purchases.

### Do Big Math or Reading Train have ads?

Neither Big Math nor Reading Train shows ads.

### Which is updated more often, Big Math or Reading Train?

Big Math ships an update every 11 months, and Reading Train every 13 months. Most recently, Big Math was updated on October 19, 2026 and Reading Train on October 12, 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.*