# IBHistory vs ChemPlan

The clearest difference is in-app purchases: ChemPlan at none against IBHistory's 2. ChemPlan also leads on ads (none vs shown). IBHistory's advantage is iOS requirement (13.4 vs 15.0). On price and device support there is nothing between them.

Both are free to download. IBHistory sells 2 in-app purchases, starting at $0.99 per month. ChemPlan asks for nothing beyond the download.

## The numbers

| Metric | IBHistory | ChemPlan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | — |
| Size | 50 MB | 11 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Revised](https://appshunter.io/developer/1711666730) | [Paul Leadbeater](https://appshunter.io/developer/1888748038) |

## What reviewers say

### IBHistory

[App page](https://appshunter.io/ios/app/ibhistory/id6469198846)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IB History Flashcards | $0.99 | per month |
| IBHistory | $0.99 | per month |


### ChemPlan

[App page](https://appshunter.io/ios/app/chemplan-ib/id6761624255)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IBHistory free?

IBHistory is free to download, with in-app purchases available.

### Is ChemPlan free?

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

### Do IBHistory or ChemPlan have ads?

IBHistory shows ads; ChemPlan does not.

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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.*