Call for Line vs ColdRead
Two apps that get talked about in the same breath, but they're built for different parts of the actor's process. Here's how they actually compare.
Both Call for Line and ColdRead are tools actors keep in their bag, and both promise to help you run lines without a scene partner. But the apps solve different problems. ColdRead was built for cold reading audition sides – quick, in-the-room prep where you have a page in your hand and a few minutes to make sense of it. Call for Line was built for the long haul: getting an entire role off book for a production.
If you're an actor weighing the two for memorization specifically, the table below is the short version. If you want to skip ahead: ColdRead is the better tool for cold-read prep, Call for Line is the better tool for line memorization. Most working actors end up with both apps installed and reach for whichever one fits the day.
| Feature | Call for Line | ColdRead |
|---|---|---|
| Primary use case | Memorizing lines for stage and screen with a scene partner that listens | Cold reading audition sides with a reader voice |
| Script formats supported | Any script, stage or screen – PDF or plain text, format detected automatically | PDF and plain text |
| Rehearsal modes | Run Lines (full scene, listens to you) and Study mode (flashcard cue review) | Read-along with adjustable highlight speed |
| Listens while you perform | Yes – speech recognition with word-level diff against the script | No – you read along, the app doesn't score you |
| Accuracy scoring | Word-by-word diff with goals from 50% to 100% in 5% steps, plus a Word Perfect editor for mic mishears | Not the focus – built for cold reads, not memorization |
| Scene partner voices | Six distinct voices with adjustable speed (0.75x to 2.0x) | Reader voice with speed control |
| Recorded scene partners | Yes – record a real person's lines (or upload a recording) and rehearse with their voice | No |
| Built-in repertoire | The Stacks: 31 classic plays from Shakespeare, Chekhov, Wilde, Ibsen, and more – ready to rehearse | No built-in library; bring your own sides |
| Progress tracking | Mastery scores, Off Book badges, streaks, and trouble lines per scene | None |
| Hint system | Call for Line – feeds you a configurable few words when you're stuck | On-screen text serves as the hint |
| Pricing | Free plan (2 imports, 20 scored rehearsals a month, The Stacks included); Pro $6.99/mo or $39.99/yr | Paid app, in-app purchases for additional features |
| Platforms | iPhone (launching soon) | iOS |
When ColdRead is the right call
You have an audition tomorrow. The sides came in last night. You don't need to know every word – you need to feel the shape of the scene, hear what your scene partner sounds like in your ear, and walk in ready to make choices. ColdRead is fast, focused, and designed exactly for that moment.
When Call for Line is the right call
You've been cast. You have weeks before opening, a stack of pages, and the slow, unglamorous work of getting off book ahead of you. You want to rehearse the same scene a dozen times, hear the cue, deliver the line, and know – not guess – whether you got it word for word. Call for Line is built for that work. The app reads every other role aloud in distinct voices (or in your real scene partner's recorded voice), listens while you perform, and scores you line by line. When you're stuck, you call for line.
The honest summary
These aren't competitors as much as they're companions. Use ColdRead for cold reads. Use Call for Line for memorization. If you only want one app and your work is mostly auditions, ColdRead makes sense. If you're working on a role you need to know cold – every line, every cue, every beat – Call for Line was built for you.
Try Call for Line free
A real free plan every month, Pro when you need more. Launching soon on iPhone – join the waitlist.
Curious about the wider field? Read our roundup of the best line memorization apps for actors.