Molecular Weight Calculator vs mechanical design engine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
mechanical design engine
Read full descriptionHide full description
* To calculate basic thickness of cylindrical/rectangular pressure vessel including heads if input data such as pressure, temperature, inner diameter and material information. * flange data can be easily searched. * Profile steel information such as pipe, H, W, I and U-Beam. * Raw material information, that is chemical composition and mechanical properties, for example, ASTM A240 316L, EN10297-1, SUS316L and so on. * Size and shape information of every thread(iso/unf/pf/pt) and shackles(bow/d-type) * To calculate force and moment of solid mechanics according to support type.
Screenshots
Verdict
The clearest difference is price: mechanical design engine at Free against Molecular Weight Calculator's $2.99. mechanical design engine also leads on update cadence (every 2 months vs every 29 months). On ads, in-app purchases, device support and iOS requirement 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
mechanical design engine 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.
Molecular Weight Calculator ships an update every 29 months, mechanical design engine every 2 months. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.
| Parameter | Molecular Weight Calculator | mechanical design engine |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 29 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13 | 13.0 |
| Further details — not scored | ||
| Size | 1 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | gan dae choi |
In-app purchases
Molecular Weight Calculator
No in-app purchases
mechanical design engine
No in-app purchases
Questions
Is Molecular Weight Calculator free?
Is mechanical design engine free?
Do Molecular Weight Calculator or mechanical design engine have ads?
Which is updated more often, Molecular Weight Calculator or mechanical design engine?
Other comparisons
