Mastering

Mastering is the final audio processing step before distribution - it optimizes a track for streaming platforms. UnitedMasters partnered with Roex to offer AI-powered mastering directly in the distribution flow, removing the need for external mastering services.

The feature needed to work across iOS, Android, and Web with cross-platform parity. Each platform had different checkout architectures and audio playback capabilities.

Artists didn't understand the value of mastering or why they should pay for it within the distribution flow. The upsell placement felt interruptive rather than helpful. Preview functionality (hearing before vs. after) was the key to communicating value but was technically complex across platforms.

Tier-based pricing added complexity - different mastering options at different price points needed clear differentiation without overwhelming the purchase decision.

Audio playback for before/after comparison required platform-specific implementations. Checkout flows differed across iOS (Apple IAP), Android (Google Play Billing), and Web (Stripe). The feature couldn't block the distribution flow - artists must be able to skip mastering and proceed.

Mastering options in Waterfall Releases have a specific constraint: changes won't affect the original release, requiring clear messaging to prevent confusion.

Positioned mastering as an enhancement step within the distribution flow, not a gate. The before/after audio preview is the primary conversion mechanism - hearing the difference is more persuasive than reading about it.

Designed tier-based pricing cards with clear feature differentiation. Each tier shows what processing is included and the expected outcome. Pricing is prominent but secondary to the audio comparison.

Built cross-platform parity by defining the interaction pattern once (preview, compare, purchase, confirm) and adapting to each platform's native checkout and audio APIs.

Strong daily adoption across platforms, establishing mastering as a consistent revenue stream. Purchase clarity improved significantly as measured by reduced support tickets about mastering charges.

Expanded mastering availability from iOS-only to all three platforms, significantly increasing the addressable artist base.

Batch mastering for albums and EPs - currently limited to single-track mastering. Advanced mastering options (genre-specific presets, reference track matching). Integration with Waterfall Releases for re-mastering capabilities.