Comparison

Element OTG vs Element Science

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

Head to head

Element OTG

Chemistry Learning Made Easy

Explore the Elements

About

Element OTG

Features

Read full description

• Complete Periodic Table - All 118 elements with detailed information • Interactive Learning Center - Chemistry quizzes and symbol practice • Smart Search & Filter - Find elements by name, symbol, or properties • Dark Mode Support - Choose light, dark, or follow system theme • Responsive Design - Perfect for phones, tablets, and desktops

About

Element Science

Features

Read full description

Explore the Elements and their isotopes in the best digital periodic table of the Elements there is!

Screenshots

Element OTG4 screens

Element Science4 screens

Verdict

The call

The clearest difference is ads: Element Science at none against Element OTG's shown. Element OTG's advantage is update cadence (monthly vs every 4 months) and iOS requirement (13.0 vs 26.4). 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

Element OTG ships an update monthly, Element Science every 4 months. The most recent releases landed on September 12, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 3 level

Element OTG versus Element Science: the parameters behind the verdict, then further details
Parameter	Element OTG	Element Science
Price	Free	Free
Update frequency	Monthly — better	Every 4 months
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	13.0 — better	26.4
Further details — not scored
Size	25 MB	13 MB
Age rating	4+	4+
Developer	Japality Limited	LycheeApps Inc.

In-app purchases

None

Element OTG

No in-app purchases

None

Element Science

No in-app purchases

Questions

Is Element OTG free?

Element OTG is free to download, with no in-app purchases.

Is Element Science free?

Element Science is free to download, with no in-app purchases.

Do Element OTG or Element Science have ads?

Element OTG shows ads; Element Science does not.

Which is updated more often, Element OTG or Element Science?

Element OTG ships an update monthly, and Element Science every 4 months. Most recently, Element OTG was updated on September 12, 2026 and Element Science on September 29, 2026.