# Chemister vs E

The clearest difference is in-app purchases: Chemister at none against E's 3. Chemister also leads on ads (none vs shown) and iOS requirement (13 vs 15.0). E's advantage is update cadence (every 3 weeks vs every 4 months) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. E sells 3 in-app purchases, starting at $2.99 per month. Chemister asks for nothing beyond the download.

Chemister ships an update every 4 months, E every 3 weeks. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Chemister | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 28 MB | 37 MB |
| Requires iOS | **13** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [SILICON CRAFT TECHNOLOGY PUBLIC COMPANY LIMITED](https://appshunter.io/developer/1279674870) | [Mohamed Mubarak](https://appshunter.io/developer/6787548629) |

## What reviewers say

### Chemister

[App page](https://appshunter.io/ios/app/chemister-ca/id6443787192)

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-light-circuit-simulator/id6787548627)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Quarterly | $7.99 | per 3 months |
| Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is Chemister free?

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

### Is E free?

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

### Do Chemister or E have ads?

E shows ads; Chemister does not.

### Which is updated more often, Chemister or E?

Chemister ships an update every 4 months, and E every 3 weeks. Most recently, Chemister was updated on October 13, 2026 and E on October 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.*