Germany

Leka Chemie GmbH

We build the chemistry app students keep open while they work: elements, equations, conversions and drill cards — all of it running offline.

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  • Chemistry software
  • Offline-first
  • Built in Germany

What we actually build

Periodic table you can read at arm's length

Every element with oxidation states, electron configuration, melting and boiling points, electronegativity and isotopes. Tap an element, get the data — no menu tree, no loading spinner.

Equation balancing that shows the arithmetic

Type the reaction in plain notation and the app returns balanced coefficients plus the steps it used, so a student can check the method instead of copying a result.

Unit and concentration conversions

Moles, mass, molarity, molality, ppm, percent by mass and volume, pressure and temperature — with the formula shown next to the answer.

Quizzes and flashcards for exam weeks

Spaced-repetition decks for nomenclature, ion charges, functional groups and solubility rules, with progress kept per topic rather than one undifferentiated score.

Full offline mode, by design

The reference data ships inside the app. Basement lecture halls, trains and locked-down exam devices all behave the same as a desk with Wi-Fi.

Data we can point to

Element and constant values are sourced from published reference tables and versioned, so a teacher can see which figures changed and when.

Ways to work with us

Most enquiries come from schools, university departments and tutoring providers. Tell us the group and we scope it.

Most asked for

Classroom licence

One teacher, one set of classes, managed as a single group.

  • Access for a defined student group
  • Ad-free app on student devices
  • Printable quick-start sheet for the first lesson
  • Topic decks aligned to your syllabus order
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Department & campus licence

For faculties and libraries rolling the app out across cohorts.

  • Group provisioning without individual sign-ups
  • Offline deployment for lab and exam devices
  • A named contact on our side for the rollout
  • Documentation for your IT and data-protection review
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Custom content partnership

Your course material, our reference engine and study decks.

  • Decks built from your own question bank
  • Terminology and notation matched to your course
  • Review round before anything goes live
  • Updates as the course material changes
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Scope and terms are quoted per enquiry — nothing on this page is a fixed price list.

How an enquiry goes

  1. You send the shape of it

    Group size, the devices your students actually use, and whether the app has to work without a connection. Three lines is enough to start.

  2. We come back with questions, not a brochure

    Someone from the product team replies, asks what is missing from how you teach the topic now, and says plainly whether we are the right fit.

  3. A pilot group tries it

    A small cohort runs the app through a real topic — balancing, conversions, a deck — before anyone signs anything.

  4. Rollout and the term after

    Provisioning, a quick-start sheet for the first lesson, and a review once the group has used it through an exam period.

Tell us what your group needs

Licensing, a pilot for one class, or custom decks for your course — start here and we take it from the top.

  • Your message reaches the product team at Leka Chemie, not a call centre.
  • The first reply is a short note asking about group size, devices and offline use.
  • A pilot can be arranged before any contract is discussed.

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Chemistry help that still works when the Wi-Fi does not.

Ask us about a licence, a pilot or custom study decks.

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