Comparison

Molecular Weight Calculator vs Conversions

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

Head to head
About

Molecular Weight Calculator

This tool calculates the average molecular weight of molecules using their chemical formulas. It offers instant results, supports high precision, and is optimized for everyday use on iOS devices. The app prioritizes user privacy and is ad-free.

Highlights
  • Instant molecular weight calculation
  • Copy results to other apps
  • Includes formula references
  • Supports up to 16 decimal places
  • Works on iPhone and iPad
  • Ad-free and privacy-focused
Features
Read full description

The Molecular Weight Calculator is a physics/math tool designed to find the average molecular weight (MW) of molecules by inputting their chemical formulas. Features: - Instant calculation - Results can be copied to other apps - Includes formula references - Supports up to 16 decimal places - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. Note: Chemical formulas are case-sensitive (e.g., C22H30N4O). Definitions: - Molecular mass (molecular weight): The mass of one molecule of a substance, expressed in unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12) - Molar mass (molar weight): The mass of one mole of a substance, expressed in grams per mole (g/mol). Thank you for your support! Visit nitrio.com for more apps for your iOS devices.

About

Conversions

Easily convert over 100 units across various categories like temperature, length, and weight. View conversion formulas, copy results, and share them directly. Enjoy a private, ad-free experience with a native iOS design.

Highlights
  • Convert 100+ units
  • Temperature, length, weight conversions
  • View conversion formulas
  • Copy and share conversions
  • Native iOS design
  • Ad-free experience
Features
Read full description

Conversions helps you convert different units of measurement, including units of temperature, length, or weight. Use Conversions to convert common measures, such as Fahrenheit to Celsius, meters to feet, and pounds to kilograms, or more technical ones, such as Joule to Kilowatt Hour, Newton to Pound-Force, and Pascal to Bar. Features: · Convert over 100 units across categories like angle, area, data, energy, force, length, power, pressure, speed, temperature, time, volume, and weight · Keep track of up to 100 of your recent conversions · Save up to 25 favorites for quick access · View the exact formulas behind each conversion · Look up unit details, including symbols, measurement systems, and conversion formulas for related units · Copy your conversions to clipboard or share directly with others · Enjoy a native iOS design, using Apple’s latest frameworks and UI guidelines Conversions provides a private and secure, ad-free experience—no ads, no tracking, ever. Terms of Service: https://crater.tools/conversions/terms-of-service Privacy Policy: https://crater.tools/conversions/privacy-policy

Screenshots

Molecular Weight Calculator4 screens
Conversions4 screens

Verdict

The call

The clearest difference is price: Conversions at Free against Molecular Weight Calculator's $2.99. Conversions also leads on update cadence (every 2 weeks vs every 29 months). Molecular Weight Calculator's advantage is device support (3 vs 1) and iOS requirement (13 vs 18.6). On rating, ratings volume, ads and in-app purchases 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

Conversions is free to download; Molecular Weight Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Molecular Weight Calculator against 5.0 for Conversions. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

UpkeepUpdate frequency

Molecular Weight Calculator ships an update every 29 months, Conversions every 2 weeks. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 5 level
Molecular Weight Calculator versus Conversions: the parameters behind the verdict, then further details
ParameterMolecular Weight CalculatorConversions
Price$2.99Free — better
Rating5.0 (3 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 29 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13 — better18.6
Further details — not scored
Size1 MB6 MB
Age rating4+4+
DeveloperNitrioPiotr Bakker

Customer experience

Molecular Weight Calculator

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Conversions

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Molecular Weight Calculator

No in-app purchases

None

Conversions

No in-app purchases

Questions

Is Molecular Weight Calculator free?
Molecular Weight Calculator costs $2.99, with no in-app purchases.
Is Conversions free?
Conversions is free to download, with no in-app purchases.
Which has better reviews, Molecular Weight Calculator or Conversions?
Molecular Weight Calculator and Conversions are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.
Do Molecular Weight Calculator or Conversions have ads?
Neither Molecular Weight Calculator nor Conversions shows ads.
Which is updated more often, Molecular Weight Calculator or Conversions?
Molecular Weight Calculator ships an update every 29 months, and Conversions every 2 weeks. Most recently, Molecular Weight Calculator was updated on October 15, 2026 and Conversions on October 28, 2026.

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