# Chemical Equilibrium vs Serious Solids

The clearest difference is price: Serious Solids at Free against Chemical Equilibrium's $3.99. Serious Solids also leads on iOS requirement (12.0 vs 17.0). Chemical Equilibrium's advantage is update cadence (every 5 months vs every 48 months). On ads, in-app purchases and device support there is nothing between them.

Serious Solids is free to download; Chemical Equilibrium costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chemical Equilibrium ships an update every 5 months, Serious Solids every 48 months. The most recent releases landed on August 20, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Chemical Equilibrium | Serious Solids |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[2.7 (7 ratings)](https://appshunter.io/ios/app/serious-solids/id992220810/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 48 months |
| Monetization | — | Free |
| Size | 1 MB | 52 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Cheryl Montgomery](https://appshunter.io/developer/611176285) |

## What reviewers say

### Chemical Equilibrium

[App page](https://appshunter.io/ios/app/chemical-equilibrium/id980553577)

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

**In-app purchases:** none


### Serious Solids

[App page](https://appshunter.io/ios/app/serious-solids/id992220810)

This educational game challenges players to identify the correct combinations of cations and anions to form solid precipitates. It's designed to help users learn to predict the products of common precipitation reactions through interactive experimentation.

**Highlights:** Predict precipitation reactions, Combine cations and anions, Form solid precipitates, Experiment with ion symbols, Earn points by swiping spectator ions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chemical Equilibrium free?

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

### Is Serious Solids free?

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

### Do Chemical Equilibrium or Serious Solids have ads?

Neither Chemical Equilibrium nor Serious Solids shows ads.

### Which is updated more often, Chemical Equilibrium or Serious Solids?

Chemical Equilibrium ships an update every 5 months, and Serious Solids every 48 months. Most recently, Chemical Equilibrium was updated on August 20, 2026 and Serious Solids on November 1, 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.*