Understudy: Learn Your Lines
Shingo Otsuhata Productivity iPhoneiPadiPod touch
Understudy: Learn Your Lines is a free Productivity app for iPhone and iPad by Shingo Otsuhata. Requires iOS 14.0. Updated October 16, 2026.
- Price
- Free
- on the App Store
- Size
- 42 MB
- Age 4+
- Updated
- Oct 16
- 2026 · v1.5.1
Screenshots
About Understudy: Learn Your Lines
Record your scene partner's lines, then practice the back-and-forth on your own. ◆ Who it's for Actors, voice actors, comedians, presenters — anyone who has to learn lines and then perform in front of people. Professional or not. ◆ How it works 1. Record your scene partner's lines 2. On the practice screen, play them back and say your own lines out loud 3. Tap to play. The app moves to the next line for you ◆ What you can do Work without looking at the screen Tap and swipe are all you need, so you can move around and keep your eyes up. Every action comes back as a small vibration. Change the playback speed From 0.5x to 2.0x. Slow it down to check a passage, or speed it up for a quick run-through. Attach a PDF script Link a PDF to a work and read it while you record. The file stays on your device — Understudy only points to it, so nothing is uploaded anywhere. Add bookmarks and jump to a page in one tap. Bring in audio you already have Import music or any audio file you've prepared. Useful when you practice against a sound cue. Export your recordings and share them Export a scene as a ZIP. Move it to another device, or hand it to the person you're working with. You can also practice against a ZIP someone else recorded, with their voice as your scene partner. ◆ From the developer At home, on the way to rehearsal, or in the hour before a performance — I wanted something I could practice with anywhere. That's why I made this. I hope it helps you. ◆ About Understudy Pro Everything you need to practice stays free. With Understudy Pro you can see more of your data on the Practice Ticket and choose from all 7 ticket designs. You also get the Pro colors, and you can set a color of your own. Understudy Pro is an auto-renewing subscription, available monthly or yearly. It renews at the same price unless you cancel at least 24 hours before the current period ends. You can cancel any time from Manage subscription in the app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shimeco.github.io/understudy-pages/privacy.html
What’s new
Version 1.5.1 · Updated October 16, 2026
▼ 1.5.1 Fixes • Fixed an issue where lines in the exported file were mixed up across scenes when you exported a whole work or several scenes at once. Improvements • The hint for changing the speed by pressing and holding now also appears during auto-play with a 0-second interval. ▼ 1.5.0 New • Practice type You can now choose the playback order of the lines for each scene. “Random”, “Ladder”, and “Cue only” are new. Tap the settings icon at the top right of the line list, then “Practice type”, to switch. • Change the speed by pressing and holding While a line is playing, press and hold to change the speed until you let go. Choose the “While holding” speed from the playback speed button at the top right of the practice screen. To move through lines quickly, press and hold while stopped, then swipe. ▼ 1.4.1 Small fixes. ▼ 1.4.0 Understudy is now in English Record your scene partner's lines, then practice the back-and-forth on your own. Tap and swipe are all you need, so you can practice without looking at the screen. Change the playback speed, keep a PDF script beside you, and bring in audio you already have. The app follows your device language. Understudy Pro is here • Practice Ticket Look back on your practice, and save or share it as a ticket. You can issue one for free. With Pro you can see more of your data, and choose from all 7 ticket designs. I'm happy with how they turned out — have a look. • Pro colors and custom color You get the 5 Pro colors, and you can set a color of your own. Good to know Everything you need to practice stays free. All of it. That won't change. Understudy Pro is for when you want to make the app more your own. Every screen has also been reworked, so the app stays usable at larger text sizes.
App privacy
The developer, Shingo Otsuhata, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction, Other Usage Data
- Diagnostics: Crash Data
Used for: Analytics, App Functionality
Alternatives to Understudy: Learn Your Lines
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Understudy: Learn Your Lines | – | Free | October 16, 2026 | |
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| シンプル「ABCDタスク管理」 | – | Free | Aug 2, 2026 | Compare |
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