Adagio
Adagio is a web and mobile app for music teachers managing classrooms or studios and supporting students between lessons.
What Adagio is
Adagio is a web and mobile app for music teachers managing classrooms or studios and supporting students between lessons. Teachers can schedule lessons, assign homework, keep class or lesson notes, track practice time, and manage billing. Students can use the Practice app to record practice sessions, notes, and personal to-do lists; comments, a social feed, and levels and points are also listed. Students can download the app by searching for Musopen in the Apple or Google app stores. Practice-data sharing is opt-in and can include sessions, assigned homework, goals, and notes. Invoices can be created manually or after a completed lesson, with payment options such as PayPal and email reminders for overdue invoices. The free plan costs $0 USD/mo and includes unlimited students, a calendar, lesson scheduling, homework, goals, a class feed, billing, and a free website. Premium costs $5 USD/mo and adds automated billing and invoices, custom domain support, newsletters, practice audio, and free Musopen Pro membership. An Organization Plan supports multiple teachers and classrooms, administrative oversight, and shared class access.
Good
- Free plan includes unlimited students.
- Tracks student practice time.
- Offers lesson scheduling and homework tools.
- Invoices can include digital payment options.
- Available on web, iOS, and Android.
Watch out
- Users must be at least 13 years old.
- Practice-data sharing requires student opt-in.
- Internet transmission is not guaranteed completely secure.
Who it suits
Adagio suits music teachers running a classroom or studio who want lesson scheduling, homework, practice tracking, and billing tools. Its Organization Plan is described as suited to schools or large studios.
Verdict
Adagio brings lesson management, student practice, and billing tools together for music teachers. A free plan is available, while Premium costs $5 USD/mo.
Plans and prices
From Adagio's own pricing page, checked 14 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free Plan | Free | Track practice time · Unlimited students · Calendar · Lesson scheduler · Assign homework · Set goals · Class feed · Billing · Free website · $0 USD/mo |
| Premium plan | $5 a month | All Free Plan features · Automated billing and invoices · Custom domain support · Newsletters · Practice audio · Free Musopen Pro membership · $5 USD/mo |
| Pro | $5 a month | All Free features · Automated billing and invoices · Custom domain · Newsletters · Practice-session audio · Free Musopen Pro membership · $5 USD/mo |
| Organization | $10 a month | All Pro features · Unlimited classes · Administrative control · Multiple teachers per classroom · Shared class access · Move students and teachers between classes · $10 USD/mo |
The facts
Each one read from Adagio's own pages, with the date it was checked.
What it does
- Age requirement
- The Terms of Use say users must be at least 13 years old.checked 4 Oct 2026
- API
- The homepage says users can bring current tools and connect data via API.checked 4 Oct 2026
- API integration
- Adagio says it can connect a user's existing tools and data through an API.checked 14 Oct 2026
- Calendar
- The calendar manages lessons and performances, supports day, week and month views, and sends reminders.checked 14 Oct 2026
- Communication
- The feature set includes in-app messaging, notes and email communication among teachers, students and parents.checked 14 Oct 2026
- Data handling
- The privacy policy says collected information includes IP address, user ID, pages visited, cookies, names, email addresses and contact submissions.checked 14 Oct 2026
- Data sharing
- Adagio says it does not share personally identifiable information for other organizations' marketing, while allowing service-provider sharing when necessary.checked 14 Oct 2026
- Documentation
- The official help center contains getting-started, mobile-app, student, calendar, assignments, groups, feed, organization, notes, billing and newsletter guides.checked 14 Oct 2026
- Google Play distribution
- Google Play lists at least 10,000 downloads and an October 1, 2026 update date.checked 14 Oct 2026
- Homework
- Teachers can create assignments for one or multiple students, monitor completion status, group students and send automated reminders.checked 14 Oct 2026
- Limit: goals bug
- An Apple reviewer reported that entering a 120-minute goal incorrectly marked it complete after two minutes.checked 14 Oct 2026
- Limit: offline use
- A Google Play reviewer reported that statistics and recording a practice session were unavailable offline.checked 14 Oct 2026
- Limit: timer behavior
- Google Play reviewers reported timer problems around sessions longer than one hour; the developer replied that the issue was fixed.checked 14 Oct 2026
- Nonprofit finances
- Musopen's 2025 filing summary shows $98,660 revenue, $65,303 expenses and $88,435 net assets.checked 14 Oct 2026
Where it runs
- Apple compatibility
- The Practice app requires iOS 16.4 or later and is listed for iPhone and Apple Vision.checked 14 Oct 2026
- Apple privacy disclosure
- Apple's listing says the app may track diagnostics and link contact information, audio data and diagnostics to users.checked 14 Oct 2026
- App stores
- The maker says students can download the Practice app through the Apple or Google app stores by searching for Musopen.checked 4 Oct 2026
Money
- Billing
- Invoices may be created manually or generated after completed lessons, with overdue email reminders and paid-versus-outstanding summaries.checked 14 Oct 2026
The company
- Company history
- Wikipedia identifies Musopen founder Aaron Dunn, a May 2006 launch and Palo Alto, California operations.checked 14 Oct 2026
- Headquarters
- Tarzana, California, United Stateschecked 28 Sep 2026
- Licence and ownership
- The terms describe Adagio code, interfaces and content as proprietary materials and prohibit reverse engineering, decompiling or disassembly.checked 14 Oct 2026
- Maker
- Adagio says it was created by the team behind Musopen.org and is developed by a California-based registered 501(c)(3) nonprofit.checked 4 Oct 2026
- Maker address
- The privacy policy gives Adagio's contact address as 5227 Shirley Ave., Tarzana, California 91356.checked 14 Oct 2026
- Maker identity
- Adagio says it was built by the educators, musicians and staff behind Musopen.org and is operated by a California 501(c)(3) nonprofit.checked 14 Oct 2026
The full review of Adagio
Overview
Adagio is a studio-management app for music teachers who want scheduling, student practice, and billing in one place. It suits independent teachers as well as schools and larger studios, but its strongest value is the unusually broad set of core tools available without a subscription.
Key features
Lesson scheduling, homework, goals, a class feed, and a calendar give teachers a shared structure for work between lessons as well as during them. Teachers can track practice time, while students use the Practice app to log sessions, notes, and personal to-do lists. Comments, a social feed, and practice-session points and levels add ways to keep students involved; however, practice information reaches the teacher only when the student opts in to sharing it.
Billing combines manual invoicing with the option to generate an invoice after a completed lesson. Digital payment options such as PayPal and overdue-invoice email reminders reduce routine follow-up, while Premium is required for automated billing and invoices. The homepage also describes API connections for bringing existing tools and data into Adagio.
Schools and larger studios can use the Organization Plan for multiple teachers and classrooms, administrative oversight, and shared class access. The Practice app is available through the Apple and Google app stores by searching for Musopen.
Pricing
| Plan | Price | What it includes |
|---|---|---|
| Free Plan | free (billed $0 USD/mo) | Unlimited students, calendar, lesson scheduler, homework, goals, class feed, billing, and a free website. |
| Premium plan | $5 a month (billed $5 USD/mo) | All Free Plan features, automated billing and invoices, custom domain support, newsletters, practice audio, and free Musopen Pro membership. |
The free plan is a substantial fit for teachers who can manage invoices themselves: it includes unlimited students and billing alongside the core teaching tools. Premium makes more sense when automated invoicing, practice audio, newsletters, or a custom domain matter. Organization Plan supports multi-teacher operations, but is a separate option suited to schools and large studios.
Platforms
Adagio is available on Android, iOS, and the web, making it suitable for teachers and students who need access across mobile devices and browsers.
Who it's for
Independent music teachers can use the free plan to organize lessons and student work without a student cap. Studios that need several teachers, classrooms, and administrative oversight have an Organization Plan. Students must be at least 13 years old under the Terms of Use.
Pros and cons
- Pros: Unlimited students and a free website on the $0 plan make it viable for a growing teaching roster without a per-student cap.
- Pros: Scheduling, homework, goals, billing, and class communication sit alongside student practice logging, connecting studio administration with between-lesson engagement.
- Pros: Students control whether practice data is shared with teachers, and the privacy policy says personally identifiable information is not shared with other organizations for their marketing or promotional use.
- Cons: Teachers cannot count on seeing student practice records unless each student opts in to sharing them.
- Cons: Automated billing and invoices are reserved for Premium, so free users must rely on manual invoicing or lesson-triggered invoices.
- Cons: Adagio says it uses commercially reasonable security measures but cannot guarantee that internet transmission is completely secure.
Alternatives
Browse Music Lesson Scheduling Software for more options by category.
- Clefwise is worth comparing if you use iOS or the web and want a free plan capped at three students with scheduling, invoicing, online payments, a parent portal, and lesson notes.
- Nova Music is an alternative for iOS and web users who want a free tier for up to 10 students, including group lessons, basic attendance, messaging, a student portal, and 100 MB of file storage.
- CogNote may suit studios considering self-hosting; its project says it was built by a working piano studio for its daily use.
- Trio is another web-based freemium option.
- My Music Staff is a paid alternative with a free trial and Android, iOS, and web support; its $14.95 a month plan covers one teacher, with each additional teacher or administrator costing $4.95/month.
- GroovConnect is a free web-based alternative.
- LessonLoop is a paid option with a free trial and support for API, iOS, and web; its Solo plan costs £15 a month, billed monthly or annually.
- MusicDesk is a paid alternative with a free trial and Android, iOS, and web support; its plan starts at $14.99 a month for one team member.
Verdict
Adagio is a strong choice for music teachers who want unlimited students and a practical mix of lesson management, billing, and practice tools without paying at the outset. Choose Premium when automated invoicing or its additional student-engagement tools are worth $5 USD/mo; look elsewhere if your studio needs practice data shared by default or prefers a different operating model.
Getting started
- Visit adagio.org.
- Choose the free plan or Premium at $5 USD per month.
- Use the web app or the Android and iOS platforms.
- Students can search for Musopen in the Apple or Google app stores to download the Practice app.
- Students opt in if they want to share practice sessions, assigned homework, goals, and notes with a teacher.
Limits worth knowing
The free plan does not include automated billing and invoices, custom domain support, newsletters, practice audio, or the free Musopen Pro membership; those are listed with Premium at $5 USD per month.
Questions
Is Adagio free?
Yes. The Free Plan costs $0 USD per month and includes unlimited students, a calendar, lesson scheduler, homework, goals, class feed, billing, and a free website.
How much does Premium cost?
Premium costs $5 USD per month. It adds automated billing and invoices, custom domain support, newsletters, practice audio, and a free Musopen Pro membership.
Which platforms does Adagio support?
Adagio is available on the web, Android, and iOS. Students can download the Practice app by searching for Musopen in the Apple or Google app stores.
Can students control whether practice data is shared?
Yes. Students must opt in to sharing practice data, which can include sessions, teacher-assigned homework, goals, and notes.
Who makes Adagio?
Adagio says it was created by the team behind Musopen.org and is developed by a California-based registered 501(c)(3) nonprofit.
Does Adagio have a plan for schools or large studios?
Yes. The Organization Plan supports multiple teachers and classrooms, administrative oversight, and shared class access.
