BestInterest

BestInterest is a co-parenting app for separated parents, particularly those dealing with high-conflict communication. Its Message Shield feature filters hostile language from incoming messages before the user reads them, while the original stays preserved. Tone Guardian reviews outgoing messages before sending. Boundary Line provides a dedicated phone number so a co-parent can keep texting normally without downloading anything. Solo Mode lets users work without the other parent joining. The app also includes a shared calendar, expense tracking with receipts and reimbursement requests, call recording and transcription, AI co-parent coaching, and timestamped journals and exportable records for family court or mediation. The page states the app is available for iPhone, Android and Web, and that the core app is free while advanced features like Message Shield and Tone Guardian require a premium plan.

Key features

• Message Shield filters harmful incoming messages before they are read
• Tone Guardian reviews outgoing messages before sending and helps write calmer replies
• Boundary Line provides a dedicated phone number for co-parent communication
• Solo Mode allows use without the co-parent joining
• Shared calendar for schedules, exchanges, and events
• Expense tracking for shared costs, receipts, and reimbursement requests
• Call recording and transcription of in-app calls
• Court-ready records exportable for family court or mediation
• Timestamped journaling of significant interactions
• AI co-parent coaching using the user's parenting plan

Best suited for

• Separated parents experiencing high-conflict communication with a co-parent
• Parents whose co-parent will not cooperate with or join a co-parenting app
• Parents needing documented communication for custody disputes or mediation
• Co-parents who want to coordinate schedules and shared expenses

Pricing

The core app, including secure journaling, messaging, and AI coaching, is free. Advanced features such as Message Shield and Tone Guardian are available via a premium plan; a free trial is offered on the App Store and Google Play.