# Solution Dilution Calculator vs Notepad Pro

The clearest difference is rating: Solution Dilution Calculator at 5.0 against Notepad Pro's 4.5. Solution Dilution Calculator also leads on in-app purchases (none vs 1) and ads (none vs shown). Notepad Pro's advantage is update cadence (every 2 months vs every 22 months) and review sentiment (25% vs 0%). On device support there is nothing between them.

Solution Dilution Calculator costs $2.99 and Notepad Pro $1.99 up front. Notepad Pro sells 1 one-off in-app purchase. Solution Dilution Calculator asks for nothing beyond the download.

Solution Dilution Calculator holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews complicate that: 0% of Solution Dilution Calculator's written reviews are positive against 25% of Notepad Pro's, so the app with the better star average is not the one people write more warmly about.

Solution Dilution Calculator ships an update every 22 months, Notepad Pro every 2 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Solution Dilution Calculator | Notepad Pro |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solution-dilution-calculator/id1353265965/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/notepad-pro-color-memo-notes/id1354857517/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 18 MB |
| Requires iOS | **13** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Hiren Merja](https://appshunter.io/developer/1354461445) |

## What reviewers say

### Solution Dilution Calculator

[App page](https://appshunter.io/ios/app/solution-dilution-calculator/id1353265965)

This utility app helps users calculate the precise volume of stock concentrate needed to create a diluted solution of a specific concentration and volume. It supports various concentration units and is designed for educational and research laboratory use.

**Highlights:** Dilution calculations, Supports mass/volume units, Supports weight/volume units, Ideal for labs and education, User-friendly interface

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

**In-app purchases:** none


### Notepad Pro

[App page](https://appshunter.io/ios/app/notepad-pro-color-memo-notes/id1354857517)

This app allows you to create, organize, and secure your notes and important data. It offers customization options for notes, iCloud synchronization, and a built-in PDF editor for document management. Stay organized with widgets and notifications.

**Highlights:** Unlimited note storage, Customizable note appearance, Secure app lock with biometrics, iCloud synchronization, Built-in PDF editor, Today's notes widget, Auto-delete notes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Notepad Pro+ Advanced Tools | $4.99 | one-time |


## Frequently asked questions

### Is Solution Dilution Calculator free?

Solution Dilution Calculator costs $2.99, with no in-app purchases.

### Is Notepad Pro free?

Notepad Pro costs $1.99, and also offers in-app purchases.

### Which has better reviews, Solution Dilution Calculator or Notepad Pro?

Solution Dilution Calculator is rated higher. Solution Dilution Calculator averages 5.0 out of 5 from 1 ratings, while Notepad Pro averages 4.5 from 4 ratings.

### Do Solution Dilution Calculator or Notepad Pro have ads?

Notepad Pro shows ads; Solution Dilution Calculator does not.

### Which is updated more often, Solution Dilution Calculator or Notepad Pro?

Solution Dilution Calculator ships an update every 22 months, and Notepad Pro every 2 months. Most recently, Solution Dilution Calculator was updated on November 2, 2026 and Notepad Pro on November 6, 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.*