Changelog

Web app

Changelog for the Neutropic web app (neutropic.io).

v0.1.28

September 13, 2026

  • FeatureDocs site: GitBook-style documentation at /docs — section tree, on-page outline, ⌘K search, previous/next, 41 pages in English, Korean, Japanese and Chinese, plus a reference page for every skill.
  • FeatureChangelog pages: Release notes for the web app, agent & API and desktop app inside the docs — one page per product, every entry tagged Feature, Improvement or Fix, with a version outline.
  • FeatureInline docs assistant: Ask a question at the bottom of any docs page and get an answer right there, streamed and grounded in the documentation, with links to the pages it used and a "Continue in a chat" hand-off.
  • FeatureCopy page: Copy any docs page as Markdown or its link, or open it in ChatGPT/Claude.
  • ImprovementDocs layout: Slim top bar, light canvas with a white content card, section icons, system/light/dark theme toggle, and a mobile breadcrumb bar that opens the tree.
  • ImprovementAccount and settings screenshots: Sign-in, profile menu, language, promotion, Customize (General, Skills, Add skill, Connectors, Usage), delete account, plan, projects and the @ picker, captured in all four UI languages.
  • ImprovementMarkdown renderer: One renderer for blog and docs — anchored headings, ordered lists, callouts, tables, code blocks with copy, italics.
  • ImprovementTerms and Privacy Policy: Rewritten to cover plan and refund mechanics, acceptable use, AI-output responsibility, data inventory, processors and cross-border transfers, retention periods, your rights and remedies, and contacts — in English, Korean, Japanese and Chinese.
  • FeatureProduct introduction deck: A slide-by-slide product introduction at /intro-of-product — keyboard, click and swipe navigation, contents menu, full screen, shareable slide links, and print-to-PDF; in all four UI languages with matching screenshots.
  • FixLogin destination: Signing in from a deep link (for example /new?q=…) now returns to that page instead of the default new chat.

v0.1.27

September 12, 2026

  • FeatureLanding research workflow: The features section now walks through the six stages — literature, research design, data analysis, statistics, figures, writing — with real session captures for each.
  • FeatureUse-case walkthroughs: Eight blog posts (literature, hypothesis, experiment, data analysis, statistics, figures, writing, review) rewritten as step-by-step walkthroughs of one real session, with screenshots.
  • FeatureSkills catalog and guides: /skills rebuilt from the live catalog (59 skills); each workflow skill links to a guide post in the new Skills blog category.
  • FeatureLocalized blog and screenshots: All 31 posts in Korean, Japanese and Chinese; screenshots switch to captures taken in the matching UI language.
  • FeatureDesktop bridge: When a chat is attached to the desktop app, file and code tools run on the device; first-run folder setup, native file attach, @ autocomplete for local files, media pack and on-device storage controls.
  • FeatureMobile shell groundwork: Session persistence, safe-area layout, audio/video recording from the attach menu, push-token registration.
  • ImprovementSlash commands in your language: /research, /analyze and the other commands expand in the interface language, so reports and figures come out in that language.
  • FixArtifact file names: Artifacts created without an extension get the right one for their type, and the workspace renders extension-less Markdown correctly.
  • FixReview turns: A review that produced only structured data now also writes the readable review report.

v0.1.26

September 11, 2026

  • FeatureLive streaming: Answers stream token by token as the agent writes them.
  • FeatureAudio and video uploads: Attach .wav/.mp3/.m4a/.flac/.ogg/.aac/.aiff and .mp4/.mov/.webm/.avi/.mkv/.m4v for transcription, voice, facial expression, pose and rPPG analysis.
  • FeatureEEG analysis: Attach a multichannel EEG table for preprocessing, band power, topomaps, ERP, ERD/ERS and SSVEP.
  • FeatureGoogle Drive connector: Connect Drive under Customize → Connectors, control each tool (Always allow / Ask each time / Block), import files from the + menu, and approve tool use inside the chat. Hidden until Google app verification completes.
  • FeatureDiscount coupons: Admin can create Paddle discount codes; codes are entered at checkout.
  • FeatureStorage usage: Customize → Usage shows uploads + artifacts against the plan quota; plan cards list storage limits.
  • FeatureSkip the rest: Survey cards get a "Skip the rest — search now" button that fills unanswered questions with defaults.
  • ImprovementStatistics: Group comparisons choose parametric or non-parametric tests from assumption checks and report the rationale, effect sizes, post-hoc tests and descriptives.
  • ImprovementSlash menu: All top-level skills as aliases with descriptions; unknown /commands are caught before sending; commands that need a topic disable Send until one is typed.
  • ImprovementTurn banners: Step-limit stops with deliverables read as an informational notice, not a failure.
  • ImprovementList performance: Artifact cards load previews only in the viewport; artifacts, chats and projects paginate 50 at a time.
  • ImprovementSign-up consent: Separate required (terms, privacy) and optional (marketing) checkboxes, unchecked by default, with consent time and version recorded.
  • FixPanel auto-open: Helper artifacts (structured JSON, screening tables, descriptives) no longer open first when a turn ends.
  • FixStop and reconnect: Send is locked until the server confirms a stop; connection failures show a Retry button and keep your text.
  • FixHydration warning: Footer dot pattern moved to CSS, removing the React hydration mismatch on every page.

v0.1.25

September 10, 2026

  • ImprovementPaper writing: /write turns deliver the manuscript and its figures only; the reference list is built from the [n] citations in the text, so numbering and DOIs always match.
  • ImprovementEffort levels for writing: Lite, Basic and Deep produce progressively longer manuscripts with more figures; Basic and Deep add a review report.
  • ImprovementCitation badges everywhere: Manuscripts, design reports and review reports show [n] badges with reference cards and the source panel, like research reports.
  • FixExperiment design consistency: Sample sizes, effect sizes, α and test types in the power curve and expected-results figure are checked against the design report before saving.
  • FixEEG on numpy 2.4: Band power and PSD analyses work again.

v0.1.24

September 09, 2026

  • ImprovementArtifact language: Artifacts follow the language of the request more reliably.

v0.1.23

September 08, 2026

  • ImprovementIllustrations: Better scientific illustration quality.
  • ImprovementHero video: Updated landing hero video.

v0.1.22

September 07, 2026

  • ImprovementIllustrations: Illustration skill tuned.
  • FeatureSubscription alerts: Email alert when a subscription is upgraded.

v0.1.21

September 05, 2026

  • FeatureModel catalog 2026-09: Gemini 3.8 Flash (default), 3.1 Pro, 3.5 Flash-Lite; Claude Fable 5.1, Opus 5, Sonnet 5, Haiku 4.5; GPT-6 Astra and GPT-5.6 Sol/Terra/Luna.
  • FeatureDaily cap: Plan cards and the comparison table show the daily token cap and when it refills; the composer shows today's remaining tokens.
  • ImprovementLaTeX in chat: Better math rendering in chat responses.
  • FixToken figures: 1 credit now maps to ≈1,000 tokens (previous display was 4.5× too low).
  • FeatureRefund policy: Paddle refund policy published.

v0.1.20

September 04, 2026

  • FeatureFigure editor: Select, drag, rename, add and connect nodes on server-rendered vector figures; group, align and edit properties; changes are saved as revisions.
  • FeatureVector figures: Figure artifacts render inline as SVG with SVG download and PNG export.
  • ImprovementPlan card placement: The agent plan appears under the latest request instead of at the bottom of the chat.
  • ImprovementToken display: Per-answer token count sits next to the copy button; a remaining-tokens gauge lives in the composer.
  • FixPicker scrolling: Keyboard navigation in the / and @ pickers keeps the selected item visible.

v0.1.19

September 03, 2026

  • FeatureFigure export: PDF and PPTX (editable objects) from the panel download menu, plus journal presets (single 90 mm, double 180 mm, poster, slide) and 300-dpi PNG.
  • FeatureVersion history: The artifact ⋮ menu lists revisions and restores earlier versions of text and figures.
  • FeatureEffort levels: Lite / Basic / Deep in the composer control search breadth, report length, review loops and step limits.
  • FeatureIllustrations in figures: Generate or pick an illustration for a figure node, with reference images from the chat.
  • ImprovementFigure editor: Resize handles, color inputs, alignment and distribution, snapping while dragging, full-page "Edit in workspace".
  • ImprovementCompressed tool results: Tool steps show a "compressed N%" badge when the model received a shortened result.

v0.1.18

September 01, 2026

  • FeatureProject knowledge panel: Evidence graph with search, synonym merging and a full-screen graph modal; artifacts list with filters.
  • FeatureStructured-output editor: Edit the fields of a <skill>_structured.json artifact and re-render the document.
  • FeaturePermissions: Customize → Permissions shows per-session approvals with one-click revoke.
  • ImprovementReview details: Review panels list issues with severity, location, problem and suggested fix; reproducibility shows source datasets and the agent run.
  • ImprovementExample project: Read-only for everyone, including the owner.
  • FixTool errors: Failed steps show the error code, whether it is retryable, and the recovery hint instead of disappearing.
  • FixArtifact loading: Failures show the reason with a Retry button instead of an endless spinner.

v0.1.17

August 31, 2026

  • Feature/study: Literature → design → analysis plan → integrated proposal in one turn, with stage progress.
  • FeatureSlash commands: /analyze, /stats, /hypothesis, /write, /review, /fact and /compact.
  • FeatureAgent plan panel: A collapsible step list with per-step status above the reasoning indicator.
  • ImprovementTurn restore: A notice explains when an interrupted turn was resumed from its checkpoint, or why it could not be.
  • ImprovementReview criteria: Review blocks show which criteria were applied.

v0.1.16

August 28, 2026

  • ImprovementFree tier: 500K managed tokens for Free accounts.
  • ImprovementAdmin: User names in the admin user list.

v0.1.15

August 27, 2026

  • FeatureProjects: Artifacts and chats linked at the project level; project deletion; an example project for new accounts.
  • FeatureSuggested tasks: Prompt suggestions on the new-chat screen.
  • ImprovementFollow-ups: Follow-up requests build on the previous answer.
  • FeatureMermaid diagrams: Diagram generation in artifacts.

v0.1.14

August 26, 2026

  • ImprovementResearch artifacts: Better artifact interface for research outputs.
  • ImprovementAdmin dashboard: Expanded admin page; Vercel Analytics connected.

v0.1.13

August 25, 2026

  • FeatureMobile menu: Hamburger navigation on phones.
  • ImprovementChat titles: Titles summarize the conversation instead of repeating the prompt.
  • ImprovementCSV and Markdown views: Better table and research-report rendering; research highlights restored.
  • ImprovementSettings language: The settings dialog follows the UI language.

v0.1.12

August 24, 2026

  • FeatureAdmin dashboard: First version of the admin dashboard.
  • FeatureSettings → General: Profile and preferences.
  • ImprovementCredits display: Token and credit figures in chat, usage and plan views.
  • ImprovementOpen Graph images: Background image for link previews.

v0.1.11

August 23, 2026

  • FeaturePaper table: Literature searches produce a screening table ranked by citation score, journal score and similarity.
  • FeatureTransactional email: Sign-up and subscription emails via Resend.
  • ImprovementMobile views: Settings dialog, source modal and bottom sheets fit the phone screen; Google profile pictures shown.
  • FixInterrupted turns: A stopped turn is marked as such in the chat.
  • FixDesign reports: Reference annotations attach correctly; sample size matches the power curve.

v0.1.10

August 21, 2026

  • FeatureBlog and SEO: Blog section, metadata, sitemap and robots.
  • FeatureLanguages: Korean, Japanese and Chinese UI.
  • ImprovementDocument view: Markdown artifacts render as a typeset document with reading width, heading hierarchy, tables and quotes.
  • ImprovementCitation cards: [n] badges with hover reference cards in research reports.
  • ImprovementArtifact names: Files show their real file names, including extensions.

v0.1.9

August 20, 2026

  • FeatureDesktop app shell: App mode hides marketing chrome; Google sign-in through the system browser with a deep-link callback.
  • ImprovementGoogle account switching: Sign-in always shows the account chooser.
  • FixGhost sessions: A revoked server session no longer leaves the UI signed in with failing requests.
  • FixUsage gauge: The plan gauge reads used/granted instead of the remaining balance.

v0.1.8

August 19, 2026

  • FeatureBilling: Paddle checkout connected; pricing and token policies revised.
  • ImprovementLogo: Updated brand mark.

v0.1.7

August 18, 2026

  • ImprovementResearch skills: Search and report quality.

v0.1.6

August 14, 2026

  • FeatureGemini 3.x: Gemini 3.6 Flash (default), 3.1 Pro and 3.5 Flash-Lite.
  • ImprovementReport references: Source composition and per-database contribution shown as badges in the References section.
  • FixEmpty turns: Tool calls written as text and questions written after the clarifying budget no longer end a turn without a result.
  • FixGemini function calls: Restored the thought signature Gemini 3.x requires on tool calls.

v0.1.5

August 12, 2026

  • ImprovementResearch skills: Search and report quality.

v0.1.4

August 11, 2026

  • ImprovementResearch skills: Search and report quality.
  • ImprovementLogo: Updated brand mark.

v0.1.3

August 09, 2026

  • ImprovementLogo: Updated brand mark.

v0.1.2

August 06, 2026

  • FeatureResearch tracks: Papers, patents and web as separate tracks composed by /research; /patents searches Google Patents, PatentsView and KIPRIS.
  • ImprovementSkill keys: Hyphenated skill keys (experiment-design) with legacy aliases.

v0.1.1

August 05, 2026

  • ImprovementResearch skill: First round of research-skill improvements.

v0.1.0

July 28, 2026

  • FeatureNeutropic 2.0: Initial draft of the new web app.