# Solving Linear Equation PRO vs Chord

The clearest difference is review sentiment: Chord at 57% against Solving Linear Equation PRO's 0%. Chord also leads on rating (4.8 vs 4.6) and device support (5 vs 3). Solving Linear Equation PRO's advantage is price ($1.99 vs $3.99). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Solving Linear Equation PRO costs $1.99 and Chord $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chord holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 22 and 81 respectively. Written reviews point the same way: 0% of Solving Linear Equation PRO's written reviews are positive against 57% of Chord's.

Solving Linear Equation PRO ships an update every 3 weeks, Chord every 4 weeks. The most recent releases landed on October 2, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Solving Linear Equation PRO | Chord |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | [4.6 (22 ratings)](https://appshunter.io/ios/app/solving-linear-equation-pro/id1273600793/reviews) | **[4.8 (81 ratings)](https://appshunter.io/ios/app/chord/id1500126852/reviews)** |
| Number of ratings | 22 | **81** |
| Positive reviews | 0.0% of reviews | **57.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | **Free** | Paid |
| Size | 179 MB | 46 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Roman Sevastyanov](https://appshunter.io/developer/1448837134) |

## What reviewers say

### Solving Linear Equation PRO

[App page](https://appshunter.io/ios/app/solving-linear-equation-pro/id1273600793)

Solve linear equations with detailed, step-by-step solutions and visualize the results with plots. Save and access past calculations through a history function, and easily share your final answers.

**Highlights:** Step-by-step equation solving, Plotting of results, Calculation history, Input validation, Decimal and fraction support, Solution sharing

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

**In-app purchases:** none


### Chord

[App page](https://appshunter.io/ios/app/chord/id1500126852)

Unlock musical creativity with a suite of tools for composing and practicing. Generate chord progressions, practice notation, train your ear, and even use your device as a MIDI keyboard. Includes a macOS version for seamless integration.

**Highlights:** Chord progression generation with inversions and extensions, Live playback as piano or synth, MIDI output to macOS, Guitar chord finder, Notation reading practice, Ear training for intervals and voice, macOS version included

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

**In-app purchases:** none


## Frequently asked questions

### Is Solving Linear Equation PRO free?

Solving Linear Equation PRO costs $1.99, with no in-app purchases.

### Is Chord free?

Chord costs $3.99, with no in-app purchases.

### Which has better reviews, Solving Linear Equation PRO or Chord?

Chord is rated higher. Solving Linear Equation PRO averages 4.6 out of 5 from 22 ratings, while Chord averages 4.8 from 81 ratings.

### Do Solving Linear Equation PRO or Chord have ads?

Neither Solving Linear Equation PRO nor Chord shows ads.

### Which is updated more often, Solving Linear Equation PRO or Chord?

Solving Linear Equation PRO ships an update every 3 weeks, and Chord every 4 weeks. Most recently, Solving Linear Equation PRO was updated on October 2, 2026 and Chord 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.*