# Periodic Table PRO vs Thinkaloud

The clearest difference is in-app purchases: Thinkaloud at none against Periodic Table PRO's 8. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Periodic Table PRO sells 8 one-off in-app purchases. Thinkaloud asks for nothing beyond the download.

Periodic Table PRO ships an update every 6 weeks, Thinkaloud every 2 months. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Periodic Table PRO | Thinkaloud |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (86 ratings)](https://appshunter.io/ios/app/periodic-table-pro/id1601545941/reviews)** | — |
| Number of ratings | **86** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Paid | — |
| Size | 210 MB | 35 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [AGILE FLEX TECH SRL](https://appshunter.io/developer/1601049602) | [Matthew Brown](https://appshunter.io/developer/1798556393) |

## What reviewers say

### Periodic Table PRO

[App page](https://appshunter.io/ios/app/periodic-table-pro/id1601545941)

Explore a virtual chemistry lab with interactive experiments and detailed information on all chemical elements. Features include atom structure simulations, downloadable PDFs, and studying analytics to enhance learning. Supports multiple languages and offers a cohesive, functional design.

**Highlights:** Virtual chemistry lab with experiments, Detailed chemical element information, Atom structure simulations, Downloadable element PDFs, Studying analytics, Multi-language support

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPECIAL OFFER! | $9.99 | one-time |
| Chernobyl experiments | $9.99 | one-time |
| Explosive experiments | $9.99 | one-time |
| Funny experiments | $9.99 | one-time |
| Experiments with fire | $9.99 | one-time |
| Gas bubbles experiments | $9.99 | one-time |
| Melting experiments | $9.99 | one-time |
| Oxidation experiments | $9.99 | one-time |


### Thinkaloud

[App page](https://appshunter.io/ios/app/thinkaloud/id6742466947)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Periodic Table PRO free?

Periodic Table PRO is free to download, with in-app purchases available.

### Is Thinkaloud free?

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

### Do Periodic Table PRO or Thinkaloud have ads?

Neither Periodic Table PRO nor Thinkaloud shows ads.

### Which is updated more often, Periodic Table PRO or Thinkaloud?

Periodic Table PRO ships an update every 6 weeks, and Thinkaloud every 2 months. Most recently, Periodic Table PRO was updated on September 18, 2026 and Thinkaloud on September 10, 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.*