Chem_Calculator vs Periodic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chem_Calculator
This app provides organic chemists with a molecular weight calculator featuring a full-sized periodic table. It allows for real-time calculation with mixed input of elements, numbers, and parentheses, and enables saving, editing, and deleting results.
- Molecular weight calculation
- Full-sized periodic table
- Real-time results
- Save, edit, and delete calculations
- Element detail lookup
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All organic chemists should have, best calculator for molecular weight in App Store! - check element detail by long pressing element button - elements, numbers, parenthesis mixed input, real-time result - full-sized periodic table, period 1, 2, 3 elements were combined in one line - save, delete or edit your result - more features on the way...
Periodic
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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
Verdict
The clearest difference is ads: Chem_Calculator at none against Periodic's shown. Chem_Calculator also leads on iOS requirement (10.0 vs 15.1). Periodic's advantage is update cadence (every 5 weeks vs every 4 months). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Chem_Calculator ships an update every 4 months, Periodic every 5 weeks. The most recent releases landed on October 22, 2026 and October 12, 2026 respectively.
| Parameter | Chem_Calculator | Periodic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (155 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 155 — better | — |
| Update frequency | Every 4 months | Every 5 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 34 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | 铠宁 雷 | Om Prakash Chapagain |
In-app purchases
Chem_Calculator
No in-app purchases
Periodic
No in-app purchases
Questions
Is Chem_Calculator free?
Is Periodic free?
Do Chem_Calculator or Periodic have ads?
Which is updated more often, Chem_Calculator or Periodic?
Other comparisons
