These are the most reliable for understanding the original linguistic intent and historical context.
Lau, D.C. (1963). Lao Tzu: Tao Te Ching. London: Penguin Classics.
Known for its rigorous adherence to the Chinese text and its clear, unsentimental prose. A staple for any serious study.
Henricks, Robert G. (1989). Lao-Tzu: Te-Tao Ching. New York: Ballantine Books.
Based on the Mawangdui archaeological finds. It is unique because it follows the ancient order of the text (Te before Tao).
Ames, Roger T. & Hall, David L. (2003). Dao De Jing: A Philosophical Translation. New York: Ballantine Books.
Focuses on the "process" philosophy of the Tao, making it highly relevant for an app focused on "Change."
These versions prioritize the "feeling" and rhythm of the Tao, often making them more accessible for modern users.
Mitchell, Stephen. (1988). Tao Te Ching: A New English Version. New York: HarperCollins.
Highly popular and poetic. While it takes significant liberties with the literal translation, it captures the "spirit" of the work beautifully.
Le Guin, Ursula K. (1997). Lao Tzu: Tao Te Ching: A Book about the Way and the Power of the Way. Boston: Shambhala.
The famous novelist spent decades refining this version. It is praised for its "un-pompous" and deeply personal voice.
Red Pine (Bill Porter). (1996). Lao-tzu's Taoteching. San Francisco: Mercury House.
Includes selected commentaries from Chinese sages through the ages, providing a "community" perspective on the text.
Wuang Bi (Translated by Richard John Lynn). (1999). The Classic of the Way and Virtue. New York: Columbia University Press.
Translates the text alongside the most influential historical commentary. Essential if you want to understand how the I Ching and Taoism merged in the 3rd century.
Cleary, Thomas. (1991). The Essential Tao. San Francisco: HarperSanFrancisco.
Cleary is a master of translating Taoist "inner work" and meditation-focused texts.