# Formulas +, your 4 collections vs Equation Solver 4in1

The clearest difference is in-app purchases: Equation Solver 4in1 at none against Formulas +, your 4 collections's 2. Formulas +, your 4 collections's advantage is review sentiment (38% vs 28%) and price ($3.99 vs $4.99). On update cadence, ads, monetization model and device support there is nothing between them.

Formulas +, your 4 collections costs $3.99 and Equation Solver 4in1 $4.99 up front. Formulas +, your 4 collections sells 2 one-off in-app purchases. Equation Solver 4in1 asks for nothing beyond the download.

Formulas +, your 4 collections ships an update every 4 months, Equation Solver 4in1 every 7 months. The most recent releases landed on October 14, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Formulas +, your 4 collections | Equation Solver 4in1 |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Positive reviews | **38.5% of reviews** | 27.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Paid | Paid |
| Size | 27 MB | 13 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [app-solutions.de](https://appshunter.io/developer/550462608) | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) |

## 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 |


### Equation Solver 4in1

[App page](https://appshunter.io/ios/app/equation-solver-4in1/id575826804)

This app helps you solve various types of equations, including linear, quadratic, cubic, and quartic. It provides step-by-step solutions for linear and quadratic equations and stores your calculation history.

**Highlights:** Linear equation solver, Quadratic equation solver, Cubic equation solver, Quartic equation solver, Step-by-step solutions, Equation history

**Features:** 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 Equation Solver 4in1 free?

Equation Solver 4in1 costs $4.99, with no in-app purchases.

### Do Formulas +, your 4 collections or Equation Solver 4in1 have ads?

Neither Formulas +, your 4 collections nor Equation Solver 4in1 shows ads.

### Which is updated more often, Formulas +, your 4 collections or Equation Solver 4in1?

Formulas +, your 4 collections ships an update every 4 months, and Equation Solver 4in1 every 7 months. Most recently, Formulas +, your 4 collections was updated on October 14, 2026 and Equation Solver 4in1 on October 29, 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.*