# Periodic Table for Chemists vs Error 1000

The clearest difference is in-app purchases: Periodic Table for Chemists at none against Error 1000's 1. Periodic Table for Chemists also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Error 1000 sells 1 one-off in-app purchase. Periodic Table for Chemists asks for nothing beyond the download.

## The numbers

| Metric | Periodic Table for Chemists | Error 1000 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/periodic-table-for-chemists/id6758019544/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | — |
| Monetization | Free | — |
| Size | 15 MB | 15 MB |
| Requires iOS | **17.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hans Joachim Weidmann](https://appshunter.io/developer/1826468486) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Periodic Table for Chemists

[App page](https://appshunter.io/ios/app/periodic-table-for-chemists/id6758019544)

Access comprehensive element data and advanced chemistry tools with this intuitive reference app. It offers detailed properties, calculations, and visualization for students and professionals. Works offline and is optimized for mobile devices.

**Highlights:** 118 elements with extensive properties, Advanced chemistry calculations (Zeff, electronegativity), Electronic structure visualization, Powerful search and filtering, Offline access to all data, Interactive periodic table interface, Personal notes and favorites

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

**In-app purchases:** none


### Error 1000

[App page](https://appshunter.io/ios/app/error-1000/id6803171617)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is Periodic Table for Chemists free?

Periodic Table for Chemists is free to download, with no in-app purchases.

### Is Error 1000 free?

Error 1000 is free to download, with in-app purchases available.

### Do Periodic Table for Chemists or Error 1000 have ads?

Error 1000 shows ads; Periodic Table for Chemists 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.*