Comparison

The Elements by Theodore Gray vs Periodic

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

Head to head
About

The Elements by Theodore Gray

Explore the building blocks of the universe with this interactive guide to the periodic table. Discover beautifully photographed elements, fascinating stories, and detailed 3D models of over 500 objects, all presented in multiple languages.

Highlights
  • Living periodic table interface
  • Rotating 3D element samples
  • Detailed 3D object models
  • Pinch-zoom and 3D stereo viewing
  • Multilingual support
  • Fascinating stories and facts
Features
Read full description

From Theodore Gray comes a beautifully produced app introducing and educating users on the elements of the periodic table and how they combine to form the world around us. The Elements is a rich and engaging love story, told in words and pictures - allowing you to experience the beauty and fascination of the building blocks of our universe in a way you've never seen before. Start off on a living periodic table where every element is shown with a smoothly rotating sample. To read about gold, tap the gold nugget. Immediately you see the sample filling the screen, photographed to razor sharpness and rotating around a complete circle in front of your eyes. Enjoy the extensive array of facts and figures. Next find a fascinating story about the element, surrounded by carefully photographed objects representing it. Every one of these objects, well over 500 in total, is a freely rotatable, live object that you can examine from all sides and pinch zoom to see in unprecedented detail. Touch the element name at the top of the page and you can see that element’s name in over a dozen different languages. Choose one and you’ll find that the entire book, stories, captions and all, switches to that language: The Elements includes both the full English original text and over a dozen full translations. Pinch-zoom or tap any object to bring it up full screen, where you can split into a pair of stereo 3D images, allowing you to see all 500 objects pop off the screen in 3D, and you can spin the objects, in 3D, with the touch of a finger. This book will show everyone there’s a lot more to the periodic table than a bunch of numbers and letters. Features include: • Beautifully composed pages for every Element in the periodic table • Fun stories and fascinating facts • All objects pinch-zoom with amazing detail and rotate in 3D • Engaging introduction explaining the structure of the periodic table • Engaging introduction explaining the structure of the periodic table • Fully translated into English, Catalan, Croatian, Dutch, Finnish, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Turkish ------------ Reviews: “The iPad’s splendor and power may be best shown by The Elements... it’s not like any ebook you’ve seen. The periodic table of elements comes to life.” – USA Today

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

The Elements by Theodore Gray4 screens
Periodic4 screens

Verdict

The call

The clearest difference is price: Periodic at Free against The Elements by Theodore Gray's $9.99. Periodic also leads on update cadence (every 5 weeks vs every 3 months) and iOS requirement (15.1 vs 17.0). The Elements by Theodore Gray's advantage is ads (none vs shown). On 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

Periodic is free to download; The Elements by Theodore Gray costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

The Elements by Theodore Gray ships an update every 3 months, Periodic every 5 weeks. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
The Elements by Theodore Gray versus Periodic: the parameters behind the verdict, then further details
ParameterThe Elements by Theodore GrayPeriodic
Price$9.99Free — better
Rating4.6 (122 ratings) — better—
Positive reviews73.0% of reviews—
Number of ratings122 — better—
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size1.5 GB35 MB
Age rating4+4+
DeveloperNatureGuides Ltd.Om Prakash Chapagain

Bugs and requests

The Elements by Theodore Gray

Reported bugs

3 issues
  • Element descriptions cut off on iPhone 6 Plus
  • Crashes when switching landscape orientations
  • Unable to download app after initial purchase

Requested features

4 requests
  • Add option to disable animations
  • Improve periodic table navigation
  • Include more detailed scientific information
  • Support multiple languages and spellings

Periodic

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

The Elements by Theodore Gray

No in-app purchases

None

Periodic

No in-app purchases

Questions

Is The Elements by Theodore Gray free?
The Elements by Theodore Gray costs $9.99, with no in-app purchases.
Is Periodic free?
Periodic is free to download, with no in-app purchases.
Do The Elements by Theodore Gray or Periodic have ads?
Periodic shows ads; The Elements by Theodore Gray does not.
Which is updated more often, The Elements by Theodore Gray or Periodic?
The Elements by Theodore Gray ships an update every 3 months, and Periodic every 5 weeks. Most recently, The Elements by Theodore Gray was updated on October 14, 2026 and Periodic on October 12, 2026.

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