Platform · four layers, every app
Oneplatformunderneath every Horvans app
Every Horvans app signs in the same way, takes updates the same way, and reads from the same question bank.
How you reach your app
- Sign in with GoogleNo Horvans password
- Horvans AccountOne account for every app
- Control & Update CenterLicences, revocations, signed updates
- Your centre's appUnder your own name
Layer 02
Horvans Account
The only sign-in page is /account/. Google sign-in is being set up, so you cannot sign in yet.
Google only
You sign in with your Google account. Horvans never asks for or stores a password.
An age step
The first sign-in asks whether you are 18 or older, or under 18 with a parent or guardian's consent (DPDP Act 2023).
What it keeps
Your Google ID, email, name, a copy of your profile photo no larger than 96 px, your age band, and the date and version of the terms you accepted.
Layer 03
Control & Update Center
Licences
Each installed app has a licence for its own website, signed by Horvans.
Revocations
A suspended licence goes on a signed revocation list. The app locks at its next online check.
Signed updates
Updates come as a signed manifest; every file is checked against its SHA-256 before use.
Check-ins
Once per browser session the app asks for its status and checks in.
Signed licences and updates
Two keys, each allowed one job.
- Release key · ES256
- Kept on one computer that is never online. Signs licences and update manifests only.
- Status key · ES256
- On the server. Signs status answers and revocations only.
If our server is unreachable
The app keeps working on its signed licence and tells the admins.
When the app locks
Only for a signed revocation, or real expiry of the signed licence.
The honest limit
A centre that blocks our server can delay a revocation until its licence expires. For hosted centres, enforcement is on our servers.
Service
Question bank service
Questions live only on the Horvans server. Apps fetch what they need. Each question credits its source.
- Total
- 3,69,653 questions (as of 6 Oct 2026)
- Open to the public scope
- 1,60,967
- Official previous-year papers
- 2,561
- Response time from Bengaluru
- p50 140 ms · p95 191 ms
Layer 04
Themes and hosting
Five themes
Paper & Ink, Glass, Minimal, Comic and Ink Black: real theme files, with the centre's own logo and colours.
Horvans cloud
On a Horvans subdomain or the centre's own domain.
Your own server
Self-hosted, with signed updates and a licence bound to the centre's domain.