Answer

Both are respected Jain prakarana-granthas that explain dharma and right conduct. ( epustakalay.com)

• Dharmaratna Prakaran: In available Jain book records and editions, this text is attributed to Shantisuri. It is presented as a Jain dharma text that explains virtues, ethical living, and spiritual conduct. ( epustakalay.com)
• Dharmabindu: This is a well-known Jain text attributed to Ācārya Haribhadrasūri. Critical editions also include the commentary of Municandra Suri. The work explains the duties of householders and ascetics and gives guidance on dharmic life. ( jainqq.org)

Explanation

In simple terms:

• Dharmaratna Prakaran can be understood as a text that treats dharma as a precious jewel and teaches how a Jain should live with virtues and discipline. ( jaingpt.org)
• Dharmabindu is a practical guide to Jain ethics, especially for lay followers, and also touches the conduct of ascetics. ( jainqq.org)

Spiritual Understanding

Both texts are important because they remind a seeker that Jain dharma is not only belief, but also daily purity of conduct, restraint, compassion, and disciplined living. ( jaingpt.org)

Takeaway

If you want a simple distinction:

• Dharmaratna Prakaran = dharma explained as a precious jewel. ( jaingpt.org)
• Dharmabindu = a practical guide to Jain conduct and duties. ( jainqq.org)

I can also give a short summary of each granth in simple language.