| Price from | $23.17/mo | $0.30/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Plans published | 4 | 5 |
| Spec score · AI Essay Writers | 9.0 (#3) | 8.2 (#16) |
| Age requirement | Users must be at least 13, and users under 18 require parent or guardian consent. | Users must be at least 13; users under 18 need parent, guardian, or teacher permission and supervision. |
| API and SDKs | The publicly accessible maker pages reviewed do not describe a public API, SDK, webhooks or developer documentation. | The public pages describe no Writium API, SDK, or developer documentation. |
| Integrations | The maker lists partnerships with Accelerate Academy and AI Plus Prep tutoring centers. | The privacy policy lists optional Google sign-in and names Vercel, Supabase, Exa, Anthropic, Stripe, and Resend as service providers. |
| Licence | AlternativeTo describes Arzo AI as proprietary rather than open source. | The public pages do not identify Writium as open source or publish a software licence. |
| Security | Arzo says traffic between users and its servers is encrypted and its Anthropic API communication uses secure transmission protocols. | The privacy policy says passwords are salted and hashed, traffic uses HTTPS, login cookies are HTTP-only, and database access is scoped to each account. |
| Self-hosting | Arzo is presented as a hosted web service; the reviewed pages provide no self-hosting package or deployment instructions. | The public pages describe a hosted web service and provide no self-hosting option. |
| Support | The site lists [email protected] for privacy questions and says inquiries will receive a response within 45 days. | The maker says a small team reads messages directly and invites users to contact it through its contact form. |
| What it does | Arzo is an AI college-application coaching platform for high-school students. | Writium is a student research workspace combining essay drafting with live-web source discovery and organization. |
