System status

Everything you depend on, in real time.

If the app, the scoring engine, or our counsellor inbox is down, you'll see it here before you see it in your screen. Status updates every 60 seconds.

All systems operational

No active incidents. Last incident closed 11 days ago.

Last refreshed
just now

Student-facing surfaces

Bandlingo website (bandlingo.com)
Marketing site · routing, contact form, booking
Operational
Mobile app — iOS
App Store v3.4.2 · 99.97% uptime last 90 days
Operational
Mobile app — Android
Play Store v3.4.2 · 99.96% uptime last 90 days
Operational

Backend services

Scoring engine — AI grader
Powers Speaking, Writing, Reading, Listening scores
Operational
Examiner-review queue
Human re-grade SLA · 24 hours
Operational
Cross-exam compare API
Public score-conversion endpoint
Operational
Authentication & accounts
Sign-up, login, password reset, OTP
Operational

Counsellor & support

Counsellor WhatsApp inbox
India hours (Mon–Sat, 10am–8pm IST) · 3 min average reply
Operational
Booking system
Free 30-min call calendar
Operational
In-app chat
Live chat widget · website + app
Operational

Third-party dependencies

Razorpay (payment processing)
Cards, UPI, netbanking, EMI · status.razorpay.com
Operational
AWS Mumbai (ap-south-1)
Primary hosting region
Operational
SendGrid (transactional email)
Booking confirmations, invoices, score notifications
Operational

90-day SLA

Rolling averages for the metrics that matter to a student in the middle of a prep cycle.

App uptime
99.96%
↑ 0.02 vs prev 90 days
Scoring P95 latency
28s
↓ 4s vs prev 90 days
Examiner-review SLA
98.4%
↑ 1.1 vs prev 90 days
WhatsApp reply time
2.6min
↑ 0.3 min vs prev 90 days

Recent incidents

Every incident from the last 30 days. We post-mortem anything that affected more than 10 students, in writing.

Minor

Examiner-review queue delayed by ~6 hours

17 May 2026

Two examiner partners were unavailable simultaneously, causing the human re-grade queue to back up by an extra ~6 hours. 14 students saw delayed feedback. We refunded the +3 credit fee for every affected attempt automatically. Onboarded one additional examiner that week. Resolved 17 May 22:30 IST.

Resolved

Scoring engine — partial regression on Speaking

04 May 2026

A model deployment introduced a regression in Speaking scores for accents from north-east India. Detected within 3 hours, rolled back. 38 attempts received a corrected score the same day with an in-app notice. Post-mortem published in the engineering blog. Resolved 04 May 14:15 IST.

Minor

Razorpay UPI rail intermittent

28 April 2026

Razorpay reported a partial UPI outage for ~45 minutes affecting credit-purchase transactions. We surfaced a banner in-app pointing students to netbanking as an alternative. No student lost money. Resolved upstream by Razorpay 28 Apr 17:00 IST.