Comparison

Periodic Table of Elements+ vs Quasmo

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

Head to head
About

Periodic Table of Elements+

This educational app provides a compact Mendeleev's table with extensive chemical element data. It allows users to create molecular formulas, calculate their mass, and access detailed Wikipedia information for each element. Designed for students and chemistry enthusiasts, it offers VoiceOver accessibility and efficient space utilization.

Highlights
  • Mendeleev's table reference
  • Molecular formula composer
  • Molecular mass computation
  • VoiceOver accessibility
  • Links to Wikipedia pages
  • Copyable element information
Features
Read full description

A quick Mendeleïev's table using a little space. Accessible with VoiceOver, it is a useful reference for students and people interested in chemistry. It reports many data related to chemical elements, that you can select and copy. With this app you can create the molecular formula by long pressing the symbols and compute its mass. The app also includes links to the Wikipedia pages of the elements, for extensive information. - Composer for molecular formulas - Computes the molecular mass - Accessible with VoiceOver - Optimized to use a small space - Includes many elements’properties - Allows to copy the element’s information - Link to wikipedia pages for more information

About

Quasmo

Features
Read full description

Unlock the fascinating realm of micro-imaging with our innovative app, meticulously designed to seamlessly integrate with your external micro camera. Whether you're a seasoned scientist, dedicated researcher, passionate hobbyist, or simply captivated by the intricate wonders of the microcosm, our app empowers you to effortlessly capture, organize, and share your discoveries with unparalleled ease and precision. Leveraging the advanced capabilities of your external micro camera, our app offers a user-friendly interface that facilitates the seamless capture of high-quality micro images. But our commitment to excellence doesn't end there. With a suite of intuitive features meticulously crafted to enhance your experience, you can meticulously curate detailed sample lists, categorize your captures based on a myriad of parameters, and securely store them within the app's robust database. Organization lies at the heart of our app's functionality, recognizing the paramount importance of structured data management in your micro-imaging endeavors. Seamlessly navigate through your extensive collection of micro images with effortless precision, effortlessly sorting them by date, category, or custom tags tailored to your specific needs and preferences. But the true beauty of our app lies in its ability to facilitate seamless collaboration and knowledge sharing. Whether you seek to share your groundbreaking discoveries with esteemed colleagues, eager friends, or fellow enthusiasts, our app simplifies the process with unparalleled efficiency. With just a few taps, you can effortlessly share your meticulously curated sample lists via email, popular messaging apps, or across various social media platforms, fostering meaningful discourse and enriching the collective understanding of the micro world. Whether you're embarking on a pioneering scientific research expedition, meticulously documenting the captivating intricacies of nature, or simply indulging your insatiable curiosity, our app serves as your indispensable companion throughout your micro-imaging journey. Download now and embark on an exhilarating exploration of the unseen wonders that await, as you uncover the breathtaking beauty and boundless potential of the microcosm that surrounds us.

Screenshots

Periodic Table of Elements+4 screens
Quasmo3 screens

Verdict

The call

The clearest difference is ads: Quasmo at none against Periodic Table of Elements+'s shown. Quasmo also leads on iOS requirement (12.0 vs 15.0). Periodic Table of Elements+'s advantage is update cadence (every 7 months vs every 23 months). On price, in-app purchases and 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

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

UpkeepUpdate frequency

Periodic Table of Elements+ ships an update every 7 months, Quasmo every 23 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
Periodic Table of Elements+ versus Quasmo: the parameters behind the verdict, then further details
ParameterPeriodic Table of Elements+Quasmo
PriceFreeFree
Rating4.7 (60 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings60 — better—
Update frequencyEvery 7 months — betterEvery 23 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size38 MB28 MB
Age rating4+17+
DeveloperSonya MarcarelliQuality scientific and mechanical works

In-app purchases

None

Periodic Table of Elements+

No in-app purchases

None

Quasmo

No in-app purchases

Questions

Is Periodic Table of Elements+ free?
Periodic Table of Elements+ is free to download, with no in-app purchases.
Is Quasmo free?
Quasmo is free to download, with no in-app purchases.
Do Periodic Table of Elements+ or Quasmo have ads?
Periodic Table of Elements+ shows ads; Quasmo does not.
Which is updated more often, Periodic Table of Elements+ or Quasmo?
Periodic Table of Elements+ ships an update every 7 months, and Quasmo every 23 months. Most recently, Periodic Table of Elements+ was updated on November 3, 2026 and Quasmo on November 4, 2026.

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