# Formulas +, your 4 collections vs StepMath

The clearest difference is price: StepMath at Free against Formulas +, your 4 collections's $3.99. StepMath also leads on in-app purchases (none vs 2) and update cadence (weekly vs every 4 months). Formulas +, your 4 collections's advantage is iOS requirement (12.0 vs 15.1). On ads and device support there is nothing between them.

StepMath is free to download; Formulas +, your 4 collections costs $3.99 up front. Formulas +, your 4 collections sells 2 one-off in-app purchases. StepMath asks for nothing beyond the download.

Formulas +, your 4 collections ships an update every 4 months, StepMath weekly. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Formulas +, your 4 collections | StepMath |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Paid | — |
| Size | 27 MB | 25 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [app-solutions.de](https://appshunter.io/developer/550462608) | [Stepic Inc](https://appshunter.io/developer/1469042524) |

## What reviewers say

### Formulas +, your 4 collections

[App page](https://appshunter.io/ios/app/formulas-plus-your-4-collections/id550462605)

This app consolidates essential formulas for mathematics, physics, chemistry, and technical subjects into a single, easy-to-use application. It features an intelligent search function and provides clear explanations and graphics to aid understanding.

**Highlights:** Consolidated formulas for multiple subjects, Intelligent search function, Explanations and graphics, Calculation function (In-App Purchase), User suggestion feature

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basics Pack | $0.99 | one-time |
| Geometry/Stereometry Pack 1 | $0.99 | one-time |


### StepMath

[App page](https://appshunter.io/ios/app/stepmath/id6749267386)

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

**In-app purchases:** none


## Frequently asked questions

### Is Formulas +, your 4 collections free?

Formulas +, your 4 collections costs $3.99, and also offers in-app purchases.

### Is StepMath free?

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

### Do Formulas +, your 4 collections or StepMath have ads?

Neither Formulas +, your 4 collections nor StepMath shows ads.

### Which is updated more often, Formulas +, your 4 collections or StepMath?

Formulas +, your 4 collections ships an update every 4 months, and StepMath weekly. Most recently, Formulas +, your 4 collections was updated on October 14, 2026 and StepMath on October 16, 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.*