The hardest part of a work trip is usually 7pm. Taletune keeps the story in your voice, so the shape of your child's evening survives the trip.
Small children rarely miss a parent in the abstract way adults imagine. What they notice is that the evening changed shape — the story that always happens did not happen. Protecting the routine contains the disruption: Dad is away, and everything else is the same.
Calls land at whatever time your schedule allows, they wind a child up at precisely the wrong moment, and they end with a small goodbye every night. Call earlier in the evening, and let bedtime itself be calm and predictable.
Record your voice profile calmly at home rather than in an airport. It takes a minute, and the recording quality is the single biggest factor in how much it sounds like you.
Whoever is holding bedtime alone is doing two jobs. A story that runs itself while they settle a younger sibling is worth more than a symbolic gesture from two thousand miles away.