Comparison

Periodic Table vs e

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

Head to head
About

Periodic Table

This app makes chemistry accessible and engaging with interactive tools and clear explanations. It offers detailed element information, isotope data, a molar mass calculator, and a comprehensive chemistry dictionary. Designed for students, educators, and enthusiasts, it presents complex concepts beautifully and efficiently.

Highlights
  • Interactive Periodic Table with filters
  • Detailed Element Cards
  • 3300+ Isotopes database
  • Molar Mass Calculator
  • Chemistry Dictionary
  • Reactions & Equations explanations
  • Solubility chart and orbital models
Features
Read full description

▶ Why should you install this? Chemistry isn’t school torture — it’s the language of the universe. And if you still think chemistry is just boring tables, meaningless equations, and endless memorization, then no one ever really showed it to you the right way. This app makes chemistry clear. Useful. Beautiful. No boring lectures. No confusing terms. No ads. Just facts, visuals, and respect for your time. ▶ Who is it for? For students — to understand, not just memorize. For university learners — to save time and stress. For teachers — to keep everything essential within reach. For chemists — to stop dealing with outdated, clunky websites. For anyone curious about how the world really works. ▶ Why you’ll love it • Interactive Periodic Table — flexible layout, filters, and color themes.
• Detailed Element Cards — from atomic data to symmetry and radioactivity.
• 3300+ Isotopes — searchable, filterable, and presented clearly.
• Molar Mass Calculator — handles even the most complex formulas.
• Chemistry Dictionary — short, precise, human-readable definitions.
• Reactions & Equations — with clear conditions and explanations.
• Favorites, notes, and comparison tools to organize your knowledge.
• Solubility chart, orbital models, graphs, and visual symmetry tools. Everything you need — from the classroom to the lab. Chemistry isn’t a dry science — it’s the language of matter. And now, that language fits in your pocket — complete with all the glossaries and data about our universe.

About

e

Features
Read full description

e-Lab in Class APP是一個搭配LiveABC專業英語叢書(大專教科書)的互動學習APP。 多樣化的課程模組及豐富的影音資源,大幅突破傳統書籍的既有限制。 e-Lab in Class APP更導入了AR擴增實境及語音辨識等技術,讓英語學習的形式更加多元有趣。

Screenshots

Periodic Table4 screens
e4 screens

Verdict

The call

The clearest difference is in-app purchases: e at none against Periodic Table's 10. e also leads on iOS requirement (14.0 vs 16.1). Periodic Table's advantage is update cadence (every 6 days vs fortnightly). On price, ads 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. Periodic Table sells 8 in-app purchases, starting at $0.99 per month. e asks for nothing beyond the download.

UpkeepUpdate frequency

Periodic Table ships an update every 6 days, e fortnightly. The most recent releases landed on November 10, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 7 level
Periodic Table versus e: the parameters behind the verdict, then further details
ParameterPeriodic Tablee
PriceFreeFree
Rating4.8 (5.5K ratings) — better—
Positive reviews88.2% of reviews—
Number of ratings5.5K — better—
Update frequencyEvery 6 days — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS16.114.0 — better
Further details — not scored
Size152 MB93 MB
Age rating4+4+
DeveloperNikita ChernykhLiveABC

Bugs and requests

Periodic Table

Reported bugs

2 issues
  • Widget shows incorrect element positions
  • Electron configuration information missing for some elements

Requested features

5 requests
  • Add Arabic language support
  • Improve search functionality
  • Allow full periodic table view
  • Add pronunciation for element names
  • Include more physical constants and data

e

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Periodic Table

Subscriptions6
  • Professional: 1 Month$0.991 Month
  • Professional: 6 Months2 variants$3.996 Months
  • Professional: 6 Months7 Days trial$3.996 Months
Show 3 more
  • Professional: 1 Year2 variants$6.991 Year
  • Professional: 1 Year7 Days trial$6.991 Year
  • Professional: 1 Year$14.991 Year
One-time2
  • Professional: Unlimited$14.99
  • Professional: Unlimited$24.99
None

e

No in-app purchases

Questions

Is Periodic Table free?
Periodic Table is free to download, with in-app purchases available.
Is e free?
e is free to download, with no in-app purchases.
Do Periodic Table or e have ads?
Neither Periodic Table nor e shows ads.
Which is updated more often, Periodic Table or e?
Periodic Table ships an update every 6 days, and e fortnightly. Most recently, Periodic Table was updated on November 10, 2026 and e on November 7, 2026.

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