# Periodic Table vs Proportion Solver

The clearest difference is rating: Periodic Table at 4.8 against Proportion Solver's 3.0. Periodic Table also leads on ads (none vs shown) and update cadence (every 6 days vs every 6 weeks). Proportion Solver's advantage is in-app purchases (none vs 11). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Periodic Table sells 9 in-app purchases, starting at $0.99 per month. Proportion Solver asks for nothing beyond the download.

Periodic Table holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Periodic Table has 5.4K ratings behind it against 2, so its average is the more settled of the two.

Periodic Table ships an update every 6 days, Proportion Solver every 6 weeks. The most recent releases landed on October 29, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Periodic Table | Proportion Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5.4K ratings)](https://appshunter.io/ios/app/periodic-table-chemistry-2026/id1451726577/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/proportion-solver/id1532616220/reviews) |
| Number of ratings | **5.4K** | 2 |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 152 MB | 47 MB |
| Requires iOS | 16.1 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nikita Chernykh](https://appshunter.io/developer/1448243728) | [Francesco Varotti](https://appshunter.io/developer/1501752853) |

## What reviewers say

### Periodic Table

[App page](https://appshunter.io/ios/app/periodic-table-chemistry-2026/id1451726577)

Explore the universe's language with this interactive chemistry app. It offers a clear, visual, and fact-based approach to understanding elements, isotopes, and chemical reactions. Ideal for students, educators, and curious minds.

**Highlights:** Interactive Periodic Table, Detailed Element Cards, 3300+ Isotopes, Molar Mass Calculator, Chemistry Dictionary, Reactions & Equations, Solubility Chart & Orbital Models

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional: 1 Month | $0.99 | per month |
| Professional: 6 Months | $3.99 | per 6 months |
| Professional: 6 Months | $3.99 | per 6 months |
| Professional: 1 Year | $6.99 | per year |
| Professional: 1 Year | $6.99 | per year |
| Professional: 1 Year | $14.99 | per year |
| Professional: Unlimited | $14.99 | one-time |
| Professional: Unlimited | $24.99 | one-time |
| Professional: Unlimited | $59.99 | one-time |

**What reviewers like**

- 🚀 Great app for chemistry learning
- 👍 Useful information and features
- 💡 Includes theoretical elements
- 🚀 Efficient and easy to use
- 👍 Helpful for students and professionals

**What reviewers complain about**

- 🐛 Some inaccuracies in element data
- 🔒 Paid version required for full functionality
- 🔒 Certain features locked behind paywall

**Reported bugs**

- Widget shows incorrect element positions
- Electron configuration information missing for some elements

**Requested features**

- Add Arabic language support
- Improve search functionality
- Allow full periodic table view
- Add pronunciation for element names
- Include more physical constants and data


### Proportion Solver

[App page](https://appshunter.io/ios/app/proportion-solver/id1532616220)

This app provides step-by-step solutions for mathematical proportions. It's designed for students and math enthusiasts to learn, practice, and simplify calculations with an intuitive interface and theoretical resources.

**Highlights:** Automatic proportion solving with steps, Theory cards for understanding, Advanced math keyboard, Intuitive interface, Integrated learning, Supports all proportion types

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

**In-app purchases:** none


## Frequently asked questions

### Is Periodic Table free?

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

### Is Proportion Solver free?

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

### Which has better reviews, Periodic Table or Proportion Solver?

Periodic Table is rated higher. Periodic Table averages 4.8 out of 5 from 5.4K ratings, while Proportion Solver averages 3.0 from 2 ratings.

### Do Periodic Table or Proportion Solver have ads?

Proportion Solver shows ads; Periodic Table does not.

### Which is updated more often, Periodic Table or Proportion Solver?

Periodic Table ships an update every 6 days, and Proportion Solver every 6 weeks. Most recently, Periodic Table was updated on October 29, 2026 and Proportion Solver on October 5, 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.*