Unprompt vs VibeCSS: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of Unprompt and VibeCSS — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

Unprompt

Polymorph

Freemium

iPhone and Mac app that measures your AI usage in tokens, API-rate cost and water, without judging it.

Automatic Measurement: Mac reads local AI tool logs and iPhone uses Screen Time, so there is nothing to count manually.
Evening Check-In: A one-tap daily confirmation of personal versus work AI use, with adjustments allowed.
Pixel Calendar: Each day becomes a pixel colored against your own average, with streaks and a full-year band.
Usage and Cost (Premium): Tokens, the API-rate cost and estimated water use over today, 30 days and full history.
Codex Quotas and Widgets (Premium): Quota countdowns plus USAGE and LIMITS widgets.
Milestones and Friends: 62 milestones and friend trends via QR code or link with no account needed.
Private by Design: Data stays on device and in your iCloud, with no conversation read and no ads or tracking.

Self-Awareness: See how much you rely on AI day to day without being blocked or lectured.
Cost Tracking: Estimate what your token use would cost at API rates.
Environmental Awareness: View an estimate of the water behind your AI usage.
Work-Life Separation: Separate personal AI use from work-hours use.
Quota Planning: Watch Codex limits and reset countdowns to avoid wasting capacity.
Group Accountability: Compare trends with friends without sharing exact numbers.

VibeCSS (extension maintainer)

Free

Chrome extension for natural‑language CSS editing that applies layout and style changes directly on any website.

Natural Language Styling: Generates CSS from plain-language descriptions so users can request styling or layout changes without writing code manually.
Live Page Edits: Applies generated CSS directly to the current webpage in real time, enabling rapid prototyping and immediate visual feedback.
Element Targeting: Allows users to target specific DOM elements (via selection or selector) so changes apply precisely where intended.
Code Review and Editing: Presents the generated CSS for review and manual edits before applying, giving developers control over the final output.
Screenshot Context Support: Accepts or uses contextual screenshots to improve accuracy of generated styling when adjusting visual elements (as seen in related vibecode extensions).
Export and Persist: Enables exporting or saving the produced CSS or user script for reuse, sharing, or integration into projects.
Natural-language driven CSS edits: describe changes and receive generated CSS or user scripts
Live preview and apply styling changes directly on the open webpage
Side-panel UI for building, reviewing, and running generated code
Element targeting: specify elements to modify or scope changes to selectors
Support for attaching screenshots or visual context to improve generation
Designed to work broadly across sites (cross-site compatibility)
Open-source components and example repos published under MIT license

Rapid Prototyping: Designers and developers can try layout or theme changes on live pages to iterate quickly without modifying source files.
On‑page Bug Fixes: QA engineers or developers can patch visual regressions on a running site by describing the fix and applying a temporary CSS override.
Custom Theming: Power users can restyle web apps or pages for personal preference (dark themes, spacing adjustments) and export styles for persistent use.
Teaching and Learning: Instructors can demonstrate CSS effects by describing desired outcomes and showing the generated code to students.
User Script Creation: Build small user scripts or style overrides that can be exported and re-used across sites or shared with teammates.
Accessibility Adjustments: Quickly apply larger fonts, contrast changes, or spacing improvements to improve readability on-demand.
Rapid prototyping of UI and styling changes without manual CSS coding
Customizing the appearance of third-party websites for personal use or demos
Creating and testing user scripts to modify site behavior or layout
QA and visual regression testing by applying temporary style patches
Learning CSS by inspecting generated code and iterating on descriptions