Luna Lines vs Understudy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Luna Lines
This app helps actors memorize scripts by recording lines for themselves and other characters. It offers customizable repetition cycles and seamless playback control, even with wireless earbuds and smartwatches.
- Record lines for self and others
- Customizable repetition cycles
- Seamless playback control
- AirPods and Apple Watch integration
- CarPlay support
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Struggling to memorize your script lines? Luna Lines is here to make it easier! - Record Your Lines: Easily record your lines (Me) and the lines of other characters (Them) from your script. - Repetition Cycles: Choose from 6 different repetition cycles, including silent spaces for you to practice saying your lines out loud (Your Turn). - Seamless Playback: Each recording is sent as a song, allowing you to control playback from anywhere, including your AirPods, Apple Watch or CarPlay. - Enjoy the convenience of using AirPods with double-tap to skip forward and triple-tap to skip backward. - Scan your paper scripts or PDFs directly to Luna Lines format. Read your scripts on dark mode and with clear fonts. Limited for Free, unlimited* scans for Pro. - Generate voices out of your script. Limited for Free, unlimited* voice generation for Pro. *Under our Fair Usage Policy available at https://lunalines.app/terms CONTACT US Learn more at lunalines.app Say hi: hello@lunalines.app or @appsfromluna on Instagram Terms of Use: lunalines.app/terms Privacy Policy: https://lunalines.app/privacy
Understudy
This app assists actors with memorizing lines, rehearsing scenes, and collaborating with others. It's designed to be a personal scene partner, helping users prepare for auditions and hone their acting skills. Available on multiple devices, it supports actors in their professional development.
- Line memorization
- Scene rehearsal
- Collaboration with performers
- Booking work assistance
- Audition preparation
- Craft honing
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Designed for actors from the ground up, Understudy is the essential tool to help you memorize lines, rehearse scenes, collaborate with fellow performers, and book work. Whether you're preparing for an audition, getting off book, or just honing your craft, Understudy is your personal scene partner, available anytime and anywhere. For Support: https://understudy.app/support Privacy Policy: https://understudy.app/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Understudy at 4.4 against Luna Lines's 3.5. Understudy also leads on review sentiment (90% vs 57%) and update cadence (every 9 days vs every 3 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Luna Lines sells 2 in-app purchases, starting at $4.99 per month and Understudy sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Understudy holds the better App Store score, 4.4 against 3.5. Both are backed by a comparable volume of ratings — 11 and 12 respectively. Written reviews point the same way: 57% of Luna Lines's written reviews are positive against 90% of Understudy's.
Luna Lines ships an update every 3 weeks, Understudy every 9 days. The most recent releases landed on September 13, 2026 and October 8, 2026 respectively.
| Parameter | Luna Lines | Understudy |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (11 ratings) | 4.4 (12 ratings) — better |
| Positive reviews | 57.1% of reviews | 90.0% of reviews — better |
| Number of ratings | 11 | 12 — better |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 116 MB |
| Age rating | 4+ | 4+ |
| Developer | Luna Technologies Inc. | UNDERSTUDY TECHNOLOGIES LLC |
Customer experience
Luna Lines
Understudy
In-app purchases
Luna Lines
- Lines Pro$4.991 Month
- Lines Pro$19.991 Year
Understudy
- Understudy Pro$1.997 Days
- Understudy Pro$5.991 Month
- Understudy Pro$19.991 Year
