Comparison

Solution Dilution Calculator vs Notepad Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Solution Dilution Calculator

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
Read full description

The Solution Dilution Calculator calculates the volume of stock concentrate needed to achieve a specified volume and concentration. It uses the formula: C₁V₁ = C₂V₂ where: C₁ = Initial concentration (stock solution) V₁ = Volume to be removed (aliquot) from the stock solution C₂ = Final concentration of the diluted solution V₂ = Final volume of the diluted solution (after dilution with the solvent) Designed for both teaching and research laboratories, this calculator can be used for dilution calculations with solutions expressed in mass per volume (e.g., g/L, mg/mL) or weight per volume (e.g., % w/v) concentration units. Example Dilution Calculation: Question: What volume of a 10 mM stock solution is required to prepare 20 mL of a 50 μM solution? Solution: Using the equation C₁V₁ = C₂V₂, where: C₁ = 10 mM C₂ = 50 μM V₂ = 20 mL V₁ = Unknown Steps: Enter 10 into the Concentration (start) box and select millimolar (mM). Enter 50 into the Concentration (final) box and select micromolar (μM). Enter 20 into the Volume (final) box and select milliliters (mL). The result, 100 microliters (0.1 mL), will appear automatically. Thank you for your support! Stay tuned for more updates.

About

Notepad Pro

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
Read full description

Notepad Pro - Smart Notes, Secure Data & PDF Manager Notepad Pro helps you save, organize, and protect your important notes, memos, and favorite data in one powerful app. Create notes with different colors, images, font styles, and font sizes to match your needs and stay organized effortlessly. With iCloud Sync, your notes are safely stored in iCloud so you can access, restore, or delete them anytime, directly from the app. Notepad Pro also includes a Today’s Notes Widget that displays the current date and gives timely notifications, helping you stay on top of your daily tasks and reminders. In addition to fast and simple note-taking, Notepad Pro now includes a built-in PDF Editor & Manager, making it easier to work with documents in one place. Key Features:- - Notes & Organization • Unlimited notes storage • Multiple note colors • Pinned & private notes • Custom font styles & font sizes • Sort notes by name or date • Auto-delete notes after a selected time • Easy note sharing • One-tap quick note creation - Security • App lock with multiple passcode options • Touch ID & Face ID support - iCloud Sync • iCloud sync for notes • Retrieve or delete notes from iCloud - Widgets & Notifications • Widget for today’s notes • Notifications for daily notes & reminders - PDF Editor & Manager • Create and manage PDF files • Edit existing PDFs • Export notes as PDF • Share PDFs easily • Add signatures and stamps to PDFs • Store and organize PDFs in one place Note down anything, anytime, anywhere with just one tap and never miss an important thought or reminder again with smart notifications. Note: All your data is stored locally on your device. We do not access, collect, or store your data. Your privacy is fully protected. Thank you for using this app. We’re committed to improving your experience with every update. Keep writing and stay organized!

Screenshots

Solution Dilution Calculator4 screens
Notepad Pro4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard9 real differences · 1 level
Solution Dilution Calculator versus Notepad Pro: the parameters behind the verdict, then further details
ParameterSolution Dilution CalculatorNotepad Pro
Price$2.99$1.99 — better
Rating5.0 (1 ratings) — better4.5 (4 ratings)
Positive reviews0.0% of reviews25.0% of reviews — better
Number of ratings14 — better
Update frequencyEvery 22 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.0
Further details — not scored
Size1 MB18 MB
Age rating4+4+
DeveloperNitrioHiren Merja

Customer experience

Solution Dilution Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Notepad Pro

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

Solution Dilution Calculator

No in-app purchases

1 purchases

Notepad Pro

One-time1
  • Notepad Pro+ Advanced Tools$4.99

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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