QuillBot vs Writesonic: Trust Facts Side by Side
At a glance: verified facts
| Fact | QuillBot | Writesonic |
|---|---|---|
| Operated by | Learneo, Inc. | Writesonic, Inc. |
| Country | United States | United States |
| Founded | 2017 | 2020 |
| Founders public | Yes | Yes |
| Domain registered | — | 2021-01-14 |
| Official iOS app | ✓ Quillbot-AI Writing & Keyboard | — |
| Policy changes we track | 4 detected (2 major) | 7 detected (1 major) |
| Last data check | 2026-11-01 | 2026-11-01 |
From public records (company registry, RDAP, App Store metadata) and our policy snapshots — a "—" means we have no verified data for that field yet.
What we checked
Both are ai writing & paraphrasing tools we track. We have sourced facts for QuillBot on 4 of 5 areas and for Writesonic on 4 of 5. The tables on this page set them side by side; we don't pick a winner. An area without sourced facts is not yet checked, and is left blank rather than guessed.
Quick verdicts
QuillBot: QuillBot was checked on 4 of 5 trust dimensions using public records. Evidence found for: company & identity, data & privacy, billing & subscription, community reputation. Not yet assessed: product reality.
Writesonic: Writesonic was checked on 4 of 5 trust dimensions using public records. Evidence found for: company & identity, data & privacy, billing & subscription, community reputation. Not yet assessed: product reality.
What their privacy policies say about AI training
QuillBot (policy captured 2026-10-31):
Improving our Services: We perform internal
analytics and applied machine learning on data about your engagement
with our Services to help develop and improve our Services.
Writesonic (policy captured 2026-10-09):
ProviderTraining on customer dataDefault retentionConfiguration we useOpenAI (direct API)Not used to train OpenAI models.
Quoted verbatim from each vendor's own privacy policy — full context and more excerpts on each tool's report page.
Frequently asked questions
Is QuillBot legit?
QuillBot is operated by Learneo, Inc.. We have sourced facts on 4 of 5 areas so far, each linked to its source on the full report. Anything not yet checked is marked as pending.
Is Writesonic legit?
Writesonic is operated by Writesonic, Inc.. We have sourced facts on 4 of 5 areas so far, each linked to its source on the full report. Anything not yet checked is marked as pending.
How this comparison works
Both tools are checked on the same five areas — company identity, data privacy, billing, product reality and reputation — using documented evidence only; an area with no evidence stays unchecked instead of guessed. Read the full reports: QuillBot trust report · Writesonic trust report, or run any other tool through the trust check.