Periora
Elements, Chemistry & Quiz
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Periora is the periodic table you'll actually enjoy opening.
Every one of the 118 elements, with data compiled from IUPAC and NIST — atomic weights, electron configurations, physical properties — bundled offline, so it works in class, in the lab, or on a plane. No account. No ads. Ever.
BUILT FOR STUDY
• Quiz mode: Symbol → Name and Name → Symbol with instant feedback
• Search that understands Arabic and English — حديد, Iron, Fe, or 26 all find the same element
• Category filters: pick out the halogens or lanthanides at a glance
BEAUTIFUL AND ALIVE
• Animated electron shells for every element
• The whole table at a glance on a full-screen iPad
• Full dark mode and a design that respects your language — complete right-to-left Arabic
ACCURATE BY DESIGN
• Values from IUPAC (2021 standard atomic weights) and NIST
• Bundled reference data with a source summary in Settings
PERIORA PRO (optional one-time purchase)
• Three free quiz sessions per local day; Pro unlocks unlimited sessions
• Table, search and element details remain free
• Purchases and restoration use Apple services and require a connection
• No subscription, ever
Made for students, teachers, and the chemistry-curious.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
This update improves Arabic search, purchase and restore messages, and quiz reliability. Your preferences, best scores and daily quiz allowance are preserved. Includes layout improvements for compact windows. Requires iOS 18 or later.
The developer, hamam alabdulla, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 3.5 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English and Arabic
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Periora Pro (Lifetime) 17,99 €
- Provider
hamam alabdulla
- hamam alabdulla has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © Hamam A. Alabdulla