Music Theory 101 vs OneBigNext
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Music Theory 101
An interactive music theory training app covering classical fundamentals. It features 19 units with audio, exercises, and definitions, mirroring AP Music Theory exam curriculum. Practice skills with over 90 exercise types.
- Interactive music theory course
- 19 comprehensive units
- Audio samples and key definitions
- Skill practice exercises
- AP Music Theory exam curriculum
- Over 90 exercise types
- Aural recognition and dictation
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Welcome to a new, interactive music theory training app. We offer a comprehensive course presenting the fundamentals of classical music theory. Our course includes 19 interactive units with audio samples, interactive exercises, and key definitions. Alongside this, we offer a streamlined set of skill practice to test core knowledge. This app matches the curriculum of the AP Music Theory exam, which is designed to reflect a knowledge at the introductory college level. We're excited to help you learn. And if you’re a student… good luck with your upcoming exam! Lessons include: - Pitch and Rhythm - Scales, Meters, and Modes - Intervals, Triads, and Seventh Chords - Harmonic Progressions and Cadences - Four-Part Chorale Writing and Two-Part Counterpoint - Embelleshing Notes, Tonicization, and Melodic Techniques The app includes over 90 different exercise types, including aural recognition, melodic/harmonic dictation, and single, two-voice, and four-part composition. Our app is still new! Found something that needs to be fixed? Have an idea for what to add next? We'd love to hear from you as we build out the next features. There are buttons across the app for you to submit feedback or take a quick survey to share your thoughts.
OneBigNext
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Inside the OneBigNext app, you can: Access all of your videos in one easy to use app Receive push notifications with the latest news and updates Access to all of your videos without having to remember your password Save your favorite posts so you can quickly find them later END USER LICENSE AGREEMENT https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Music Theory 101 at every 5 days against OneBigNext's every 10 days. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Music Theory 101 ships an update every 5 days, OneBigNext every 10 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | Music Theory 101 | OneBigNext |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (64 ratings) — better | — |
| Positive reviews | 82.4% of reviews | — |
| Number of ratings | 64 — better | — |
| Update frequency | Every 5 days — better | Every 10 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 78 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Poesie Inc | OneBigNext Ltd |
In-app purchases
Music Theory 101
No in-app purchases
OneBigNext
No in-app purchases
