# Periodic Table and Chemistry — Elements, molar mass & quiz

> Comprehensive periodic table app with extensive element data and customizable themes. (iPhone/iPad app by Josue Echandia Asto.)

- Source: https://appshunter.io/ios/app/periodic-table-and-chemistry/id1455103430 (this page in markdown: same URL + `.md`)
- Developer: [Josue Echandia Asto](https://appshunter.io/developer/1455103429)
- Category: Education, Reference
- Price: Free with in-app purchases
- Rating: 3.70/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 45 MB
- Languages: American English, Dutch, French (France), German (Germany), Hindi, Indonesian, Italian, Japanese, Korean, Polish and 9 more
- Released: 2019-03-14
- Data updated: 2026-10-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/periodic-table-and-chemistry/id1455103430/reviews.md

## What is Periodic Table and Chemistry?

Checked data, with its sources in plain sight. Periodic Table is the chemistry reference that fits in your pocket: all 118 elements, 147 reactions, 22 lab tables, quizzes and eleven calculators. No ads, no account, works offline.

DATA YOU CAN TRUST
• Checked against PubChem, IUPAC, NIST and the IAEA. The sources are listed in the app, under More › Data sources.
• A value with no reliable published measurement shows as unknown (---), never made up. Elements 119 to 124 are marked as hypothetical.

ELEVEN LAB CALCULATORS
Free in their basic modes, with history: molar mass and composition, empirical formula, inorganic and organic nomenclature (IUPAC), equation balancing (redox too) with ΔH°, ΔS°, ΔG° and K, solutions (molarity, dilution, molality), gases, colligative properties, equilibrium with ICE tables, pH, electrochemical cells and analytical statistics.
With Pro: stoichiometry, mass percent and ppm, gas mixtures, vapor pressure, Le Chatelier with numbers, buffers, the Nernst equation, combustion analysis, confidence intervals and outlier tests (Dixon's Q and Grubbs).

QUIZZES BUILT FROM THE DATA
Questions are generated from the app's own data, and every answer shows the value it rests on, with a link to where that value lives. Eight topics, three levels. Practice is free and unlimited; the timed exam and spaced review are Pro.

EVERY ELEMENT IN DEPTH
• Over 70 physical, thermal, atomic, crystal, safety (NFPA 704) and abundance properties, from the Earth and the Sun to the human body. The advanced ones with Pro.
• Orbital diagram with Hund's rule, unpaired electrons and the ground-state term. If the real configuration breaks the Madelung rule, it says so.
• Shell model, emission spectrum, natural isotopes and real photos of 97 elements, credited.
• Touch and hold a value to copy it; tap its name to see what it means.
• Favorites, your own notes, and two or three elements side by side.

TWO TAPS TO ANY VALUE
• Search by name, symbol, atomic number, Latin or English name, CAS number or family.
• The full table, with family filters and a heat map.
• 38 sortable lists (28 free) and a trends chart.
• 147 reactions with their conditions, oxidation-state changes, precipitates and ΔH°, ΔS°, ΔG° and K at 25 °C, ready to balance in one tap.
• A 173-term glossary linked to the data.
• 22 tables, 10 free (solubility, reduction potentials, acids and bases, Ksp, thermodynamic data, cryoscopic and ebullioscopic constants…) and 12 with Pro (ionization energies, van der Waals, critical values for t, F, Q and Grubbs, Henry's law…).

ON ALL YOUR DEVICES
iPhone, iPad and Mac with Apple silicon. An Apple Watch app with all 124 elements that works without your iPhone. Element of the Day (also on the Lock Screen) and Favorites widgets. Siri, Shortcuts and Spotlight. In 20 languages, with VoiceOver, larger text, Dark Mode and a shape for each family if you can't tell the colors apart.

FREE AND PRO, NO FINE PRINT
Free: the table, search, each element's core data, 10 tables, 28 lists, reactions, the glossary, quiz practice, all eleven calculators in their basic modes, the watch app, widgets and three themes.
Pro: the other 12 tables and 10 lists; advanced data such as magnetic and electrical properties, the critical point and every radioactive isotope; timed exam, spaced review and stats; the calculators' advanced modes; PDF export; and ten more themes.

Pay once for Pro and it's yours for life, no subscription needed. If you prefer, there are also monthly and yearly plans; all three unlock the same things. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period, and are managed in your Apple Account settings.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://periodictable.echandia.app/privacidad/#en

## Key features

- Over 80 element properties
- 15+ additional chemical tables
- Customizable themes (light/dark)
- Regular content updates
- Useful for students and engineers

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $6.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Periodic Table Pro | $14.99 | one-time |


## Is Periodic Table and Chemistry safe?

Not enough ratings yet to assess Periodic Table and Chemistry.

## Is Periodic Table and Chemistry legit?

Periodic Table and Chemistry appears to be a legitimate app. The AppsHunter Legitimacy Score for Periodic Table and Chemistry is 83 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/periodic-table-and-chemistry/id1455103430/reviews.md

### 3/5 — not terrible

*2019-04-04*

the layout is great but the search function is...doesn’t function

## Frequently asked questions about Periodic Table and Chemistry

### What is Periodic Table 2019?

Periodic Table 2019 is an educational application that offers a detailed periodic table with over 80 properties for each element. It also includes additional chemical tables and customizable themes to aid in learning and problem-solving.

### What kind of information does Periodic Table 2019 provide about elements?

The app provides more than 80 properties for each element, which can be beneficial for students, engineers, and anyone needing detailed chemical data for exercises, experiments, or calculations.

### Can I customize the appearance of Periodic Table 2019?

Yes, the app offers customizable themes, allowing you to switch between light and dark modes. This feature helps personalize the user experience.

### How often is Periodic Table 2019 updated?

The app was last updated on March 17, 2019, with version 1.1. The developer states that they regularly add more properties, themes, and tables to the application.

### What devices is Periodic Table 2019 compatible with?

Periodic Table 2019 is supported on iPhone and iPod devices. It is designed for iOS users.

### What is the age rating for Periodic Table 2019?

The app has an age rating of 4+, making it suitable for a wide range of users, including younger students learning about chemistry.

### Does Periodic Table 2019 have ads?

Based on the provided data, the app does not have advertisements. It is free to download and use.

### What is the user rating for Periodic Table 2019?

Periodic Table 2019 has a user rating of 3.7 stars from 3 ratings. This indicates a generally positive but mixed reception from its current user base.

## Version history (last 4 releases)

### 2.0.1 — 2026-10-03

Periodic Table is back on the App Store.

I first published it in 2019 as a personal project, and for years it couldn't be downloaded. Version 2.0 is rebuilt from scratch for the people studying chemistry today:

• Data checked against PubChem, IUPAC, NIST and the IAEA, with the sources in plain sight. What isn't known shows as unknown.
• A new data sheet for every element: orbital diagram, isotopes, oxidation states, NFPA 704 diamond, photo and emission spectrum.
• Search by name, symbol, atomic number, CAS number or family.
• Eleven calculators with history: molar mass, empirical formula, inorganic and organic nomenclature, equation balancing (redox too), solutions, gases, colligative properties, chemical equilibrium, pH, electrochemical cells and analytical statistics.
• 147 reactions with their ΔH°, ΔS°, ΔG° and K, 22 lab tables and a 173-term glossary.
• Quizzes generated from the app's own data.
• Sortable lists, trends, a heat map, element comparison and, with Pro, PDF export.
• Apple Watch app, widgets, Siri, Shortcuts and Spotlight.
• iPad and Mac, 20 languages, Dark Mode, VoiceOver, larger text, shapes that tell families apart without color, and thirteen themes named after scientists (three free, one of them color-blind friendly).

Everything that was free is still free. Pro is a one-time purchase for life or, if you prefer, a monthly or yearly subscription. If you bought Premium in the previous version, it's still yours: it comes back when you open the app, or from More › Restore purchases.

Spotted a value that looks wrong? Write to me from More › Send a comment or bug and I'll check it.

### 2.0 — 2026-09-30

Periodic Table is back on the App Store.

I first published it in 2019 as a personal project, and for years it couldn't be downloaded. Version 2.0 is rebuilt from scratch for the people studying chemistry today:

• Data checked against PubChem, IUPAC, NIST and the IAEA, with the sources in plain sight. What isn't known shows as unknown.
• A new data sheet for every element: orbital diagram, isotopes, oxidation states, NFPA 704 diamond, photo and emission spectrum.
• Search by name, symbol, atomic number, CAS number or family.
• Eleven calculators with history: molar mass, empirical formula, inorganic and organic nomenclature, equation balancing (redox too), solutions, gases, colligative properties, chemical equilibrium, pH, electrochemical cells and analytical statistics.
• 147 reactions with their ΔH°, ΔS°, ΔG° and K, 22 lab tables and a 173-term glossary.
• Quizzes generated from the app's own data.
• Sortable lists, trends, a heat map, element comparison and, with Pro, PDF export.
• Apple Watch app, widgets, Siri, Shortcuts and Spotlight.
• iPad and Mac, 20 languages, Dark Mode, VoiceOver, larger text, shapes that tell families apart without color, and thirteen themes named after scientists (three free, one of them color-blind friendly).

Everything that was free is still free. Pro is a one-time purchase for life or, if you prefer, a monthly or yearly subscription. If you bought Premium in the previous version, it's still yours: it comes back when you open the app, or from More › Restore purchases.

Spotted a value that looks wrong? Write to me from More › Send a comment or bug and I'll check it.

### 1.1 — 2019-03-17

New themes!
Improving design!
Each time getting better

### 1.0 — 2019-03-12

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-17.*