Rill Browser vs Tonefold: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Rill Browser and Tonefold — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Rill Browser
Rill
Free Mac browser where your Claude Code and Codex agents work beside you, taking tasks from any page and reading the web in tabs of their own.
Key features
- Send Tasks From Any Page: Press Cmd+E on a page to hand a task to your agent, which Rill routes to the right project automatically.
- Project Auto-Detection: Finds your projects from Claude Code and Codex history with nothing to set up.
- Agent Tabs Without Your Logins: Agents read the web in tabs of their own, and you can take one over at any time.
- Safe Task Boundaries: Agents stop before paying, ordering, sending, posting or deleting, and cannot type into password, card or one-time-code fields.
- AI Tab Sorting: Groups open tabs by what you were doing while keeping your tab bar as you left it.
- Compare Tabs: Pick up to six tabs and get a table that quotes each page.
- Searchable Journal: Daily history of where you went, what you asked and what got done, with describe-to-find page recall.
- Voice Tasks (Beta): Hold Fn and speak a task for your coding agent.
Best for
- Capture Ideas In Context: Sending a coding task to your agent straight from the page where you found the idea.
- Web Research Delegation: Having an agent look up flights or products in a background tab and report back.
- Reproduce Release Notes: Testing a library change from its release notes page in the right project.
- Compare Sources: Producing a quoted comparison table across several open tabs.
- Review Agent Work: Checking what your agents did today across all projects.
- Re-find Pages: Describing a half-remembered page to locate it again.
Tonefold
vkfolio
Open-source desktop AI music composer that writes editable chords, melody, bass and drums into a piano roll from plain-language prompts.
Key features
- Layered Composer: Writes chords, melody, bass and drums on separate layers and sections, with eleven layer kinds.
- Editable Piano Roll: Every generated part is plain notes you can draw, move and resize, with velocity and drum lanes.
- Producer Mode: A producer agent proposes a plan and nothing is written until you approve it; four specialists then write only their own layers.
- Built-in Synth Playback: A General MIDI synth plays the song immediately, before choosing instruments.
- Flexible Export: Exports MIDI, a stereo WAV mix and one WAV stem per layer.
- Local or Cloud Models: Chat uses your Claude Code login or an Ollama model on your PC or LAN; the app itself works offline.
- DAW Plugin and CLI: Optional CLAP/VST3 plugin (FL Studio tested) and a CLI so Claude Code or Codex can compose.
Best for
- Song Sketching: Describe a mood and genre to get a full multi-layer draft in minutes.
- MIDI Production: Export generated parts as MIDI into a DAW for further arrangement.
- Stem Creation: Render one WAV per layer for mixing elsewhere.
- Learning Composition: Inspect and edit the notes of generated chords and melodies to learn structure.
- Agent-Driven Composing: Let Claude Code or Codex compose through the CLI and skill file.
- Kids and Simple Songs: Quickly generate simple key-specific songs and tweak them by hand.