Call for Line vs Rehearsal

The Rehearsal app set the standard for line learning on the iPhone. Here's where Call for Line takes a different approach — and where Rehearsal still shines.

The Rehearsal app has been around for a long time and a lot of working actors swear by it. Its model is simple and it works: record yourself reading every other character’s lines, then play the recording back with your own lines hidden, leaving gaps where you’re meant to speak. It puts you in the driver’s seat for every voice on stage.

Call for Line takes a different bet. Instead of asking you to record every other part yourself, the app reads them aloud for you in voices that don’t sound like yours — so the cue lands the way it would in the room. And instead of leaving you to judge how you did, it listens, transcribes, and shows you the words you got and the words you missed.

Feature	Call for Line	Rehearsal
Primary use case	Memorizing lines for stage and screen with a virtual scene partner	Memorizing lines by recording your own voice for the other parts
Who reads the other parts	The app, in six distinct voices that don't sound like you	You, recorded ahead of time for each character
Setup time per scene	Upload script, pick character, start — under a minute	Record every other character's lines yourself before you can rehearse
Listens while you perform	Yes — speech recognition with word-level diff against the script	No — playback only, no scoring
Accuracy scoring	Word-by-word diff with adjustable goal (50%, 70%, 85%, 100%)	Not built in
Built-in repertoire	30+ classic plays from Shakespeare, Chekhov, Wilde, Ibsen, and more	No built-in library
Hint system	Call for Line — feeds you a configurable few words when you're stuck	On-screen text serves as the hint
Pricing	Free during early access; pro tier planned post-launch	Paid app with subscription tiers
Platforms	iOS and Android	iOS

When Rehearsal is the right call

You like total control. You want to choose the pacing, the accents, the dramatic pauses for every other character — and you’re willing to put the recording time in. You’ve been doing it this way for years and it works. Rehearsal is a refined tool with a deep, loyal user base for a reason.

When Call for Line is the right call

You don’t want to spend the first hour recording before you can rehearse. You want a scene partner whose voice doesn’t sound like yours so the cue actually feels like a cue. And you want hard data on whether you’re really off book or just close to it — not a feeling, a number. Call for Line was built around those three things.

The honest summary

Rehearsal’s strength is that you control every voice. Call for Line’s strength is that you don’t have to. If you’d rather skip the recording step and start running lines, with a partner who listens and scores you, Call for Line is the faster path to off book.

Try Call for Line free

Want the wider view? Read our roundup of the best line memorization apps for actors.