Short answer: there isn’t a single Jain scripture exactly like the Bhagavad Gita, but Jain literature has several concise, teaching-style works that serve a similar purpose as accessible guides to Jain philosophy and practice.

Helpful Jain texts (concise and essential) and what they cover:

• Tattvartha-sutra (authored by Umaswati): A comprehensive, systematic summary of Jain philosophy—soul, karma, pure conduct, and the path to liberation. Widely studied in both Śvetāmbara and Digambara traditions, though some readings and emphasis differ between them.
• Samayasara (Kundakunda, Śvetāmbara tradition): Focuses on the essence of a monk’s vow and the nature of the self; clear, compact exposition of Jain non-violence, truth, and renunciation.
• Niyamasara (Kundakunda, Śvetāmbara tradition): Presents the basic ethical and doctrinal duties of a Jain practitioner in a succinct form.
• Pravacana-chintamani (Hitasuṛi, Digambara tradition): A modern, readable synthesis of Jain doctrine and practice from a Digambara viewpoint.
• Jainaprabha or other Prakrit/Prakrit-derived compendia (varies by sect): Short, accessible works that introduce Jain metaphysics, ethics, and practice.

Important notes on tradition and differences:

• Digambara and Śvetāmbara traditions sometimes differ in which texts are considered primary or authoritative, and they may emphasize different sutras or commentaries within the same themes.
• While the above works are highly regarded for beginners and for clear guidance, each tradition has its own canonical and commentarial layers. A teacher or enjoyed senior practitioner from your tradition can point you to the most appropriate starting texts.

If you’d like, tell me which Jain tradition you follow (Śvetāmbara or Digambara) and whether you want a very short primer or a deeper study guide, and I can suggest an order to read and a compact outline of the core concepts you’ll encounter.