# iSPEX vs Periodic Table..

The clearest difference is in-app purchases: iSPEX at none against Periodic Table..'s 2. iSPEX also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Periodic Table.. sells 2 in-app purchases, starting at $1.99 per month. iSPEX asks for nothing beyond the download.

## The numbers

| Metric | iSPEX | Periodic Table.. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/ispex/id584360175/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 5 MB | 355 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DDQ](https://appshunter.io/developer/418328467) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## What reviewers say

### iSPEX

[App page](https://appshunter.io/ios/app/ispex/id584360175)

This educational tool analyzes light entering a smartphone, breaking it down by spectrum and polarization. It requires a specific hardware add-on to function.

**Highlights:** Spectrum analysis, Polarization analysis, Hardware add-on integration, Educational tool

**In-app purchases:** none


### Periodic Table..

[App page](https://appshunter.io/ios/app/periodic-table/id6812575885)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| periodictable_by_oliva_subscription | $1.99 | per month |
| periodictable_by_oliva_donation | $1.99 | one-time |


## Frequently asked questions

### Is iSPEX free?

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

### Is Periodic Table.. free?

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

### Do iSPEX or Periodic Table.. have ads?

Periodic Table.. shows ads; iSPEX 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.*