What Users Say About Complexity and What's Planned Next

Complexity (cplx.app) is a browser extension that adds quality-of-life features to Perplexity.ai, and the available user feedback is positive: reviewers highlight faster model and focus-mode switching, UI improvements, and a responsive developer. A Prompt Library is listed as in development, and one reviewer says the extension is expected to go open-source, though no release date is given. If you depend on Perplexity daily and want to judge whether Complexity is worth adopting long-term, the evidence below covers what users report and what's officially on the roadmap.

What users say

The site's testimonial section includes two named reviews. Both are from 2024, so treat them as early-adopter impressions rather than a large-scale survey.

Two themes run through both reviews:

• Efficiency for heavy users. The most-praised features are the ones that remove friction — switching models, focus modes, and collections without leaving the thread or opening a settings page.
• An engaged developer and community. Both reviewers point to responsiveness and the Discord community as reasons they stay involved, which matters if you're weighing whether the extension will keep up with Perplexity's changes.

One caveat: these are self-selected testimonials published on the product's own site. They tell you what satisfied users value, not how common problems are.

What's in development

The site lists one feature explicitly under "In Development":

• Prompt Library — described as "a sophisticated system that allows you to create, manage, and share prompts with ease."

The same section adds "and many more couldn't fit in here," so the published roadmap is not exhaustive. No timelines or version numbers are given for the Prompt Library.

Open-source plans and long-term viability

The open-source expectation comes from the Markus Weninger review, not from an official announcement on the page — he writes that "once this extension goes open-source" he and others would be willing to help it grow. Treat this as a stated expectation rather than a confirmed plan with a date.

For assessing long-term availability, the more concrete signals are:

• Two distribution channels. The page links to the Chrome Web Store and Mozilla Add-ons, so the extension is installable on both Chrome and Firefox (one reviewer chose Brave, a Chromium browser, which is consistent with Chrome Web Store availability).
• An active feedback channel. The Discord community is the stated place to suggest features and report issues, which is where roadmap changes are most likely to surface first.
• A version still short of 1.0. The reference to "v0.0.1 and the prompts" in the July 2024 review suggests the project was early-stage at that point.

How to decide

• If you use Perplexity daily and frequently switch models or focus modes, the reported workflow gains are the strongest reason to try it — install from the Chrome Web Store or Mozilla Add-ons and judge the selectors against your own habits.
• If you need guaranteed long-term support or a committed open-source license, the current evidence isn't enough. Open-sourcing is a user expectation, not a published commitment, and the Prompt Library has no release date.
• If you want influence over direction, join the Discord community, which the page presents as the channel for feature suggestions and issue reports.

To track what actually ships, watch the Discord community and the extension's store listings rather than relying on the testimonials, which reflect mid-2024 impressions.