# Sophon LLC

> Sophon LLC builds office agents and the products their work lands in. This is the
> corporate site. Products are sold on their own domains and in the app stores.

Every figure on this site carries its basis and an as-of date. Where a claim cannot be
checked from outside, it is labelled as ours rather than presented as evidence.

## Identity

- Legal name: Sophon LLC (the domain reads "inc"; the entity is an LLC)
- Registered address: 75 E 3rd St, Sheridan, WY 82801, United States
- Contact: feedback@sophoninc.com · +1 281-912-4379
- Google Play developer name: NEXT AI Lab (formerly iAI Lab; the documents under the old name are an earlier version): https://play.google.com/store/apps/dev?id=8020090021189424158
- App Store seller name: Yang Yang (a personal seller account, not the company name; the listing is ours)
- Social accounts under the name PDF AI Lab: https://www.youtube.com/@PDFAILab · https://www.tiktok.com/@pdf_ai_lab
- GitHub organisation: https://github.com/Sophon-LLC
- Not connected to: SOPHGO / Sophon Technology (Bitmain); the Sophon blockchain project; Sophon Consulting; the Google Play app "Sophon - PDF, Safe, Fast Cloud" (com.cloud.sophon). Cue is not Cue Desk (cuedesk.com), Cue AI (cueai.app) or CUE Office by Honeycomb.

## Products (as each product's own site or store page states them, checked 15 September 2026)

- Cue: desktop voice agent for macOS 13+ and Windows 10 1809+; free to start, Cue Plus $19.99/month. Site https://heycue.io · its own llms.txt https://heycue.io/llms.txt · privacy https://heycue.io/privacy
- Cue Office: Docs, Sheets, Slides and PDF in one app; Windows, macOS, Linux, Android and iOS; free download. Site https://cueoffice.ai · privacy https://cueoffice.ai/privacy
- PDF AI: turns a document into a podcast, slides or a visual digest, and answers questions from the text. Google Play (package chatpdf.pro) https://play.google.com/store/apps/details?id=chatpdf.pro · App Store (id6581489325) https://apps.apple.com/us/app/pdf-ai-editor-scanner-chat/id6581489325 · privacy as declared on the Play listing https://sophoninc.com/privacy
- PPT AI: presentation drafts from a prompt, a document or a link; web. Site https://ppt.sophoninc.com
- PDF Scanner Max: camera to PDF; Android. https://play.google.com/store/apps/details?id=pdf.cam.scanner.pro · privacy https://sophoninc.com/privacy/next-ai-lab
- Evolve: a book condensed to fifteen minutes of reading or listening; Android. https://play.google.com/store/apps/details?id=com.sophon.book · site https://myevolve.ai · privacy https://myevolve.ai/privacy
- Also published under NEXT AI Lab and covered by the same policy, not actively developed: [PDF Reader Pro](https://sophoninc.com/pdf-reader-pro) (pdf.reader.pro), [PDF Reader - Viewer & Editor](https://sophoninc.com/pdf-reader) (pdfreader.editor.viewer.document), Word Office (com.wordaioffice)

## Published evidence

- Google DeepMind case study on Cue (figures current as of May 2026): median dictation polish latency 876 ms → 488 ms with Gemma 4 E4B running locally via Ollama; Cue's agent mode uses a cloud model. https://deepmind.google/models/gemma/gemmaverse/cue-ai/
- Voice Agent Benchmark Landscape, by Sophon LLC, MIT licence, v1.0.2 (1 September 2026): concept DOI https://doi.org/10.5281/zenodo.22227265 · https://github.com/Sophon-LLC/voice-agent-benchmark-landscape · https://huggingface.co/datasets/chatjesus/voice-agent-benchmark-landscape. A landscape, not a leaderboard; it does not contain Cue's private 227-sample benchmark.
- Store figures on the home page are as of 27 September 2026, recomputed listing by listing at https://sophoninc.com/docs/figures. Installs are the Google Play ranges summed across six listings, so 1.41M is a floor; ratings are added up across seven listings, six on Google Play and one on the App Store. A ratings figure of 15,936 dated 13 September 2026 stood on the home page until 16 September and was withdrawn rather than updated, because it could not be reconciled with the day-to-day movement in the same listings: https://sophoninc.com/docs/corrections

## Pages

- [About](https://sophoninc.com/about): the entity, the names it uses in the stores, the registered details, and where each governing document lives
- [Products](https://sophoninc.com/products): the six products we actively develop, one row each, with the store or site each is sold from
- [PDF AI](https://sophoninc.com/pdf-ai): the Google Play and App Store listings side by side — each listing's own wording per capability, the versions, languages, installs and per-storefront ratings, and the fact that the App Store serves a shorter description outside the United States
- [PDF Reader - Viewer & Editor](https://sophoninc.com/pdf-reader): the Android PDF reader and editor published as pdfreader.editor.viewer.document
- [PDF Reader Pro](https://sophoninc.com/pdf-reader-pro): the separate Android document reader published as pdf.reader.pro
- [What happens to your files](https://sophoninc.com/data): how each product handles documents, stated separately per product and quoted from its own policy
- [Join us](https://sophoninc.com/careers): how we hire, and what we have not figured out yet
- [Delete your account](https://sophoninc.com/delete-account)
- [Privacy policy — NEXT AI Lab](https://sophoninc.com/privacy/next-ai-lab): the current policy, covering the five Google Play listings named in it
- [Terms — NEXT AI Lab](https://sophoninc.com/terms/next-ai-lab): the current terms for the same listings
- [Privacy policy — iAI Lab](https://sophoninc.com/privacy/iai-lab) · [Terms — iAI Lab](https://sophoninc.com/terms/iai-lab): earlier versions, covering PDF AI only
- Security contact: https://sophoninc.com/.well-known/security.txt

## Blog

- [Check a two-PDF comparison against both sources](https://sophoninc.com/blog/check-two-pdf-comparison-against-sources): Verify a two-PDF comparison using passages from both sources. Practice equivalence, conflicts and scoped one-source claims with fictional notes. (2026-10-13)
- [Check a PDF chart's numbers before reusing them](https://sophoninc.com/blog/check-pdf-chart-values-against-source): Check PDF chart values against their source. Practice separating labelled values, calculations and unknowns with three fictional cards and a review record. (2026-10-13)
- [Check a PDF podcast against its source, one timestamp at a time](https://sophoninc.com/blog/check-pdf-podcast-against-source): Record an audio version and interval, then check the claim against the same PDF version, page and passage. Use a fictional example and a manual review log. (2026-10-06)
- [Check scanned PDF text before trusting an AI summary](https://sophoninc.com/blog/check-scanned-pdf-text-before-ai-summary): Compare a scanned page with its recognized text. Use a fictional exercise to catch identifier, unit and approval errors before summarizing a document. (2026-10-03)
- [Adobe adds PDF tools to Claude: check the file, not just the reply](https://sophoninc.com/blog/check-ai-pdf-edits-before-sharing): Adobe announced Acrobat tools in Claude. Use a fictional three-page exercise to check page order, requested edits and unchanged text before sharing a PDF. (2026-10-03)
- [What a template page owes a reader](https://sophoninc.com/blog/what-a-template-page-owes-a-reader): Our 3,926 template pages render about 90 distinct words each. What we measured before adding more, why the sample was weighted, and what it found. (2026-09-16)
- [Our store names do not match our legal name](https://sophoninc.com/blog/our-store-names-do-not-match-our-legal-name): Our 16 September 2026 record of store and account names, with a 14 October update on PDF AI's US App Store identity. The original record is preserved below. (2026-09-16)
- [Local by default, cloud as fallback: how Cue's polish step ended up on the user's machine](https://sophoninc.com/blog/local-by-default-cloud-as-fallback): Cue's dictation polish step was designed cloud-first with a local fallback. A 227-sample benchmark reversed that. What the case study records about the decision. (2026-09-15)
- [What the DeepMind case study says about Cue, and what it does not](https://sophoninc.com/blog/deepmind-case-study-what-it-says): Google DeepMind published a case study on Cue in 2026: what it measured, what runs where, how we quote it, and the claims it does not support. (2026-09-15)
- [Counting installs: why the home page says 1.41M+ and not a larger number](https://sophoninc.com/blog/counting-installs): Google Play publishes install ranges, the App Store publishes none, and estimators publish figures nobody can check. How the home page numbers are built from that. (2026-09-15)
- [How the voice-agent benchmark landscape was built, and why it is not a leaderboard](https://sophoninc.com/blog/benchmark-landscape-not-a-leaderboard): Thirteen public benchmarks, one row each, with capability coverage and licences from first-party sources. What the dataset answers and what it refuses to. (2026-09-15)

## Docs

- [Who operates our store listings](https://sophoninc.com/docs/store-identities): The names on our store listings and social accounts, and how each maps to Sophon LLC. PDF AI's US App Store identity checked 14 October 2026; other checks are dated below.
- [Which policy governs which product](https://sophoninc.com/docs/policy-map): For every product and listing, the privacy policy and terms its own site or store page declares, with the address as published there. Checked 15 September 2026.
- [How the figures on the home page are counted](https://sophoninc.com/docs/figures): The four numbers on the home page: which listings they come from, the arithmetic, and the dates. Installs are a floor; the average is not.
- [Corrections](https://sophoninc.com/docs/corrections): Facts on this site that were wrong, imprecise or out of date, the date each was corrected, and what changed, plus one open item that is blocking a product page.
- [Platforms and versions](https://sophoninc.com/docs/platforms): Where each product runs, the minimum system its site states, and the version current on the date checked, from each product's own site or listing.
- [Cue Office: facts](https://sophoninc.com/docs/cue-office): What Cue Office is, in its own site's words: the apps, the file formats, the platforms, the price and where its policies live. Checked 15 September 2026.
- [Brand assets](https://sophoninc.com/docs/brand): The Sophon wordmark, icon and social image published on this site, and the names and spellings of the company and its products.
- [Published evidence about our products](https://sophoninc.com/docs/evidence): What has been published about our products, by whom, what each source says and what it does not. One entry per source, with the address.
- [Voice Agent Benchmark Landscape: record and citation](https://sophoninc.com/docs/voice-agent-benchmark-landscape): What the dataset is and is not, where it is published, its versions, licence and DOIs, and how to cite it. Maintained by Sophon LLC.
- [Support: which address for which product](https://sophoninc.com/docs/support): Support links for Sophon products and suggested details to include when reporting an issue, with separate routes for privacy and security requests.
- [Security and vulnerability reporting](https://sophoninc.com/docs/security): Where to report a security issue in a Sophon LLC product or site, what to include, and what is in scope. Also published at /.well-known/security.txt.

## Languages

These pages are also published in each language below:
/, /about, /blog, /careers, /data, /delete-account, /docs, /pdf-ai, /pdf-reader, /pdf-reader-pro, /privacy, /products, /terms, /blog/benchmark-landscape-not-a-leaderboard, /blog/check-ai-pdf-edits-before-sharing, /blog/check-pdf-chart-values-against-source, /blog/check-pdf-podcast-against-source, /blog/check-scanned-pdf-text-before-ai-summary, /blog/check-two-pdf-comparison-against-sources, /blog/counting-installs, /blog/deepmind-case-study-what-it-says, /blog/local-by-default-cloud-as-fallback, /blog/our-store-names-do-not-match-our-legal-name, /blog/what-a-template-page-owes-a-reader, /docs/brand, /docs/corrections, /docs/cue-office, /docs/evidence, /docs/figures, /docs/platforms, /docs/policy-map, /docs/security, /docs/store-identities, /docs/support, /docs/voice-agent-benchmark-landscape, /privacy/iai-lab, /privacy/next-ai-lab, /terms/iai-lab, /terms/next-ai-lab

- 日本語 (ja): https://sophoninc.com/ja
- 한국어 (ko): https://sophoninc.com/ko
- 繁體中文 (zh-Hant): https://sophoninc.com/zh-tw
- 简体中文 (zh-Hans): https://sophoninc.com/zh-cn
- Español (es): https://sophoninc.com/es
- Português (Brasil) (pt-BR): https://sophoninc.com/pt-br
- Français (fr): https://sophoninc.com/fr
- Deutsch (de): https://sophoninc.com/de
- Italiano (it): https://sophoninc.com/it
- Nederlands (nl): https://sophoninc.com/nl
- Polski (pl): https://sophoninc.com/pl
- Türkçe (tr): https://sophoninc.com/tr
- Svenska (sv): https://sophoninc.com/sv
- Dansk (da): https://sophoninc.com/da
- Norsk bokmål (nb): https://sophoninc.com/nb
- Suomi (fi): https://sophoninc.com/fi
- Čeština (cs): https://sophoninc.com/cs
- Slovenčina (sk): https://sophoninc.com/sk
- Slovenščina (sl): https://sophoninc.com/sl
- Hrvatski (hr): https://sophoninc.com/hr
- Magyar (hu): https://sophoninc.com/hu
- Română (ro): https://sophoninc.com/ro
- Bahasa Indonesia (id): https://sophoninc.com/id
- Bahasa Melayu (ms): https://sophoninc.com/ms
- Tiếng Việt (vi): https://sophoninc.com/vi
- Filipino (fil): https://sophoninc.com/fil
- Català (ca): https://sophoninc.com/ca
- Eesti (et): https://sophoninc.com/et
- Latviešu (lv): https://sophoninc.com/lv
- Lietuvių (lt): https://sophoninc.com/lt
- Shqip (sq): https://sophoninc.com/sq
- Afrikaans (af): https://sophoninc.com/af
- Kiswahili (sw): https://sophoninc.com/sw
- Íslenska (is): https://sophoninc.com/is
- Euskara (eu): https://sophoninc.com/eu
- Galego (gl): https://sophoninc.com/gl
- Azərbaycanca (az): https://sophoninc.com/az
- Rumantsch (rm): https://sophoninc.com/rm

The blog feed (blog/feed.xml) is published in English only.