# Equation Solver 4in1 vs 日常英熟語(発音版)

The clearest difference is in-app purchases: Equation Solver 4in1 at none against 日常英熟語(発音版)'s 1. Equation Solver 4in1 also leads on price ($4.99 vs $9.99) and device support (4 vs 2). 日常英熟語(発音版)'s advantage is review sentiment (58% vs 28%). On update cadence, ads and monetization model there is nothing between them.

Equation Solver 4in1 costs $4.99 and 日常英熟語(発音版) $9.99 up front. 日常英熟語(発音版) sells 1 one-off in-app purchase. Equation Solver 4in1 asks for nothing beyond the download.

Equation Solver 4in1 ships an update every 7 months, 日常英熟語(発音版) every 5 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Equation Solver 4in1 | 日常英熟語(発音版) |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id708146141/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 27.6% of reviews | **57.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 13 MB | 62 MB |
| Requires iOS | **12.0** | 17 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [HuMinghua](https://appshunter.io/developer/475340211) |

## What reviewers say

### 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


### 日常英熟語(発音版)

[App page](https://appshunter.io/ios/app/id708146141)

Master essential English vocabulary and phrases with this comprehensive learning tool. It offers structured lessons, pronunciation, and review features to enhance your language skills. Track your progress and reinforce learning through tests and detailed reports.

**Highlights:** 1200 frequently used English phrases, Three difficulty levels (beginner, intermediate, advanced), Full pronunciation for words and example sentences, Automatic card flipping and pronunciation, Japanese display toggle, In-app dictionary with pronunciation, Spelling practice, Progress tracking and testing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 【すべて例文の発音】 | Free | one-time |


## Frequently asked questions

### Is Equation Solver 4in1 free?

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

### Is 日常英熟語(発音版) free?

日常英熟語(発音版) costs $9.99, and also offers in-app purchases.

### Do Equation Solver 4in1 or 日常英熟語(発音版) have ads?

Neither Equation Solver 4in1 nor 日常英熟語(発音版) shows ads.

### Which is updated more often, Equation Solver 4in1 or 日常英熟語(発音版)?

Equation Solver 4in1 ships an update every 7 months, and 日常英熟語(発音版) every 5 months. Most recently, Equation Solver 4in1 was updated on November 1, 2026 and 日常英熟語(発音版) 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.*