# iformula pro vs Chemist Calc

The clearest difference is price: Chemist Calc at Free against iformula pro's $2.99. Chemist Calc also leads on rating (5.0 vs 3.0). iformula pro's advantage is update cadence (every 4 months vs every 9 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Chemist Calc is free to download; iformula pro costs $2.99 up front. iformula pro sells 1 one-off in-app purchase and Chemist Calc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Chemist Calc holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

iformula pro ships an update every 4 months, Chemist Calc every 9 months. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | iformula pro | Chemist Calc |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/iformula-pro/id327888781/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chemist-calc/id1052603017/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Paid | **Free** |
| Size | 88 MB | 11 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Tobias Werner](https://appshunter.io/developer/325337278) | [ilan TETRUASHVILI](https://appshunter.io/developer/940821251) |

## What reviewers say

### iformula pro

[App page](https://appshunter.io/ios/app/iformula-pro/id327888781)

This comprehensive math learning platform offers over 4000 equations and functions across various advanced topics. It features a powerful search, a scientific calculator, note-taking, and bookmarking capabilities to aid academic study and professional reference.

**Highlights:** Over 4000 math equations, Full-featured equation search, New scientific calculator, Notes system, Bookmarking for favorite equations, Dual language support (English & German)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| draw function graph | $0.99 | one-time |


### Chemist Calc

[App page](https://appshunter.io/ios/app/chemist-calc/id1052603017)

This app serves as a smart chemistry calculator for converting between moles and grams. It also provides a comprehensive periodic table with element specifications and unit conversion tools.

**Highlights:** Mole to gram conversion, Gram to mole conversion, Periodic table with element specifications, Unit conversion, Learn chemistry signs

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad's | $0.99 | one-time |


## Frequently asked questions

### Is iformula pro free?

iformula pro costs $2.99, and also offers in-app purchases.

### Is Chemist Calc free?

Chemist Calc is free to download, with in-app purchases available.

### Which has better reviews, iformula pro or Chemist Calc?

Chemist Calc is rated higher. iformula pro averages 3.0 out of 5 from 2 ratings, while Chemist Calc averages 5.0 from 1 ratings.

### Do iformula pro or Chemist Calc have ads?

Neither iformula pro nor Chemist Calc shows ads.

### Which is updated more often, iformula pro or Chemist Calc?

iformula pro ships an update every 4 months, and Chemist Calc every 9 months. Most recently, iformula pro was updated on October 31, 2026 and Chemist Calc on November 2, 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.*