# Chemical Kinetics vs ElectronOrbital

The clearest difference is price: ElectronOrbital at $0.99 against Chemical Kinetics's $3.99. ElectronOrbital also leads on update cadence (every 2 months vs every 4 months) and iOS requirement (14.4 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Chemical Kinetics costs $3.99 and ElectronOrbital $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chemical Kinetics ships an update every 4 months, ElectronOrbital every 2 months. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Chemical Kinetics | ElectronOrbital |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 2 MB | 1 MB |
| Requires iOS | 17.0 | **14.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Takao Akatsu](https://appshunter.io/developer/1530946331) |

## What reviewers say

### Chemical Kinetics

[App page](https://appshunter.io/ios/app/chemical-kinetics/id982593180)

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

**In-app purchases:** none


### ElectronOrbital

[App page](https://appshunter.io/ios/app/electronorbital/id1602247689)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chemical Kinetics free?

Chemical Kinetics costs $3.99, with no in-app purchases.

### Is ElectronOrbital free?

ElectronOrbital costs $0.99, with no in-app purchases.

### Do Chemical Kinetics or ElectronOrbital have ads?

Neither Chemical Kinetics nor ElectronOrbital shows ads.

### Which is updated more often, Chemical Kinetics or ElectronOrbital?

Chemical Kinetics ships an update every 4 months, and ElectronOrbital every 2 months. Most recently, Chemical Kinetics was updated on November 1, 2026 and ElectronOrbital on October 25, 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.*