Comparison

iORA vs Periodic

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

Head to head
About

iORA

Visualize chemical reactions in 3D using quantum-mechanical simulations. This free, interactive application makes complex chemistry concepts accessible and engaging for learners.

Highlights
  • 3D chemical reaction visualization
  • Quantum-mechanical simulations
  • Interactive learning
  • Easy to use interface
  • Educational tool
Features
Read full description

iORA is a free, easy to use, highly interactive smartphone application that provides 3D visualization of chemical reactions based on quantum-mechanical simulations.

About

Periodic

Features
Read full description

The PeriodicTableElements is an elegant app that is interactive and fun. Easy to use, easy to understand, simple and effective. It shows the periodic table of elements in variety of ways 1) Classic grid with name that is color coded. You can configure it to look however you like. 2) Visually appealing electron distribution. 3) Visually appealing Lewis dot structure. 4) List that can be sorted based on different element properties like group, period, category etc. These awesome periodic tables can be shared by simple double click anywhere on the table. It is possible to copy the periodic table diagrams as high quality SVG xml. Drag your finger on the periodic table canvas to update elements automatically or tap on an element to see more details. Tap on an element and all the rest of the related elements are highlighted. Details of a selected element is shown in a beautifully drawn animated element. Tap on the animated element and you will see more details that can also be shared. Tapping on the list element will navigate you to a page that shows details of the element. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This is a perfect app if you are a student learning chemistry. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

Screenshots

iORA4 screens
Periodic4 screens

Verdict

The call

The clearest difference is ads: iORA at none against Periodic's shown. On price, update cadence, 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

iORA ships an update every 2 months, Periodic every 5 weeks. The most recent releases landed on September 7, 2026 and September 25, 2026 respectively.

Scorecard1 real difference · 9 level
iORA versus Periodic: the parameters behind the verdict, then further details
ParameteriORAPeriodic
PriceFreeFree
Rating5.0 (12 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings12 — better—
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.3 — better15.1
Further details — not scored
Size40 MB35 MB
Age rating4+4+
DeveloperDaniel EssOm Prakash Chapagain

In-app purchases

None

iORA

No in-app purchases

None

Periodic

No in-app purchases

Questions

Is iORA free?
iORA is free to download, with no in-app purchases.
Is Periodic free?
Periodic is free to download, with no in-app purchases.
Do iORA or Periodic have ads?
Periodic shows ads; iORA does not.
Which is updated more often, iORA or Periodic?
iORA ships an update every 2 months, and Periodic every 5 weeks. Most recently, iORA was updated on September 7, 2026 and Periodic on September 25, 2026.

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