Comparison

Fast Molality Calculator vs Trustity Authenticator

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

Head to head
About

Fast Molality Calculator

Features
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Lab Calculator is a lightweight science calculator for common solution concentration work in class, lab preparation, and research routines. Switch between percent concentration, molarity, dilution, and ppm/ppb tools. Enter the known values, choose units, and calculate the missing value without setting up a spreadsheet. Key features - Percent concentration: calculate %, solute mass, or solution volume - Molar concentration: calculate concentration, molecular weight, mass, or volume - Dilution calculator: based on C1 x V1 = C2 x V2 - ppm/ppb calculator: trace concentration using mg/L - Unit selection: g, mg, ΞΌg, L, ml, ΞΌl, M, mM, ΞΌM, and more - Quick reset: clear inputs and start a new calculation - Compact layout: designed for fast use on small screens Useful for - Students preparing chemistry experiments - Researchers working with stock and working solutions - Users who often check percent concentration, dilution, or ppm values - Anyone who wants a simple calculator instead of a spreadsheet No account is required. Values entered for calculation are not sent to a server.

About

Trustity Authenticator

Features
Read full description

TOTP authenticator for Trustity β€” Secure the Future of Work. β€’ 6-digit codes compatible with Google Authenticator and other TOTP apps β€’ Scan QR codes to add accounts β€’ Secure storage in device Keychain β€’ Push notifications support Trustity Authenticator is part of the Trustity security ecosystem.

Screenshots

Fast Molality Calculator4 screens
Trustity Authenticator1 screens

Verdict

The call

The clearest difference is ads: Trustity Authenticator at none against Fast Molality Calculator's shown. Trustity Authenticator also leads on update cadence (every 5 months vs every 35 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fast Molality Calculator ships an update every 35 months, Trustity Authenticator every 5 months. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.

Scorecard2 real differences Β· 4 level
Fast Molality Calculator versus Trustity Authenticator: the parameters behind the verdict, then further details
ParameterFast Molality CalculatorTrustity Authenticator
PriceFreeFree
Update frequencyEvery 35 monthsEvery 5 months β€” better
AdsYesNo β€” better
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 β€” better15.1
Further details β€” not scored
Size30 MB29 MB
Age rating4+12+
DeveloperJIN-HYUNG KIMTal Yosef

In-app purchases

None

Fast Molality Calculator

No in-app purchases

None

Trustity Authenticator

No in-app purchases

Questions

Is Fast Molality Calculator free?
Fast Molality Calculator is free to download, with no in-app purchases.
Is Trustity Authenticator free?
Trustity Authenticator is free to download, with no in-app purchases.
Do Fast Molality Calculator or Trustity Authenticator have ads?
Fast Molality Calculator shows ads; Trustity Authenticator does not.
Which is updated more often, Fast Molality Calculator or Trustity Authenticator?
Fast Molality Calculator ships an update every 35 months, and Trustity Authenticator every 5 months. Most recently, Fast Molality Calculator was updated on October 13, 2026 and Trustity Authenticator on October 19, 2026.

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