iZotope Ozone Review, Pricing & Alternatives (2026)

iZotope Ozone is a proprietary digital audio workstation mastering suite made by iZotope, founded in 2001. Ozone has more than two decades of development behind it, and Ozone 12 launched on September 2, 2025. Current iZotope About material identifies the company as part of Boris FX. A 2021 announcement described an alliance with Native Instruments while the brands continued independently, so Ozone is not currently a Native Instruments product. The suite serves producers, musicians, and mastering engineers who want guided processing alongside conventional controls. Its editions range from assistant-led tools to a larger package with individually loadable plug-ins and stem-focused processing. Ozone therefore covers more ground than a single limiter or equalizer while remaining inside a familiar DAW workflow.

A typical Ozone session begins with Master Assistant or Custom Assistant, which creates a starting chain from the material being mastered. The user can then refine corrective equalization, dynamics, imaging, saturation, and limiting, while using references and loudness controls to finish the master. Ozone 12 adds Bass Control, Stem EQ, a machine-learning Unlimiter, IRC 5 Maximizer, and improved Stem Focus. Stem EQ separates vocals, drums, bass, and other material in real time for per-stem equalization. Advanced loads modules individually in a DAW, while Elements keeps users within its smaller smart mastering toolset. Standard sits between them, adding editable modules without the complete Advanced package. This structure supports both quick starting points and detailed manual finishing.

Ozone 12 combines conventional digital signal processing with machine-learning features embedded in the plug-in suite. The Unlimiter is designed to restore compressed dynamics, while Stem Focus and Stem EQ use real-time separation for targeted processing. iZotope says the 2025 release improved its assistant workflow, added Bass Control, introduced the Custom Assistant flow, and improved the IRC 5 Maximizer. A MusicTech review found improved separation and fewer artifacts in Stem Focus, while noting that its available categories remain vocals, drums, and bass rather than a wider stem taxonomy. Ozone does not expose these models as a standalone developer service. Its processing is designed for production work inside compatible desktop audio software, with Advanced listed for native Apple Silicon macOS and 64-bit Windows plug-in formats.

Current displayed prices are $55 for Elements, $219 for Standard, and $499 for Advanced. Elements includes core smart mastering tools, Master Assistant with Assistant View and the Custom flow, and Assistive Vocal Balance, but individual modules are unavailable. Standard adds 14 editable mastering modules, delta buttons, track referencing, and transient or sustain targeting. Advanced includes 20 editable modules, three add-on plug-ins, and Stem Focus, with modules available individually in a DAW. iZotope Plus costs $15 per month or $150 per year with annual billing. Pro costs $25 per month or $250 per year and includes Ozone 12 Advanced. Subscription plug-ins become read-only after cancellation, while perpetual editions remain usable under license and activation terms.

Ozone's main limitation is that its most flexible workflow requires Advanced, while Elements is constrained to assistant-led tools. It is also a plug-in suite rather than an online mastering service or public API, and it is proprietary rather than open-source or self-hostable as source or model infrastructure. FabFilter's Mastering Bundle offers individual processors without Ozone's assistant and stem workflow. Sonible's smart:EQ and smart:limit take a narrower assisted-processing approach, while LANDR is designed for online automated mastering instead of DAW-based editing. Ozone is the strongest choice for producers and engineers who want guided mastering, detailed local controls, and stem-aware processing in one desktop suite. Buyers wanting separate processors, online delivery, or narrower assistance may prefer those alternatives.