Turtel is a text-message service for couples. It sends one question at a time to a group message with both partners and the Turtel number, and each person answers from their own phone. There is nothing to install, and the partner who did not sign up never needs an account.
An account is free and includes a 7-day SMS trial with no card. Base is $4.99 a month for one question a week, Premium is $12.99 a month for unlimited questions on demand, and either can be cancelled at any time. Your replies never leave your messages. We keep only who replied, when, and how long the reply was, not what it said.