AVLYNOR · FLAGSHIP PRODUCT

TETHER

One check-in. One guardian. Zero friction.

A passive voice biomarker platform that detects post-discharge patient deterioration 48 hours before any symptom.

48h
earlier than symptoms
30×
return on spend
15s
of daily speech
Try the live engine → Talk to us

The 72-hour black hole

Every year, hundreds of thousands of patients survive surgery, then quietly deteriorate at home. Discharge is a "send and pray" event. Within hours, patients forget up to 80% of their instructions. Most apps assume health literacy that recovering patients (elderly, medicated, exhausted) simply do not have.

The result: 14–18% are readmitted within 30 days. Not because surgery failed. Because the safety net collapsed the moment they walked out the door.

80%
of instructions forgotten in hours
14–18%
readmitted within 30 days
SEK 160K
per preventable readmission
SEK 785B
annual societal cost

The human voice
is a biological sensor

When fluid builds in the lungs, it increases pressure on the larynx, causing measurable acoustic instability detectable 48 hours before any symptom. Tether captures this in 15 seconds of natural morning speech.
01
Baseline calibration
A nurse records a 30-second voice fingerprint before the patient leaves the hospital. The baseline is calibrated to the patient's home noise environment, so every future reading is compared against the patient, not against a generic population.
02
Passive home monitoring
The patient speaks naturally for 15 seconds each morning. No form. No typing. No app friction. Designed from the ground up for elderly, low-literacy, post-anaesthesia users who cannot navigate a clinical questionnaire.
03
On-device analysis · Shredder Protocol
A Rust-WASM edge AI extracts jitter, shimmer, HNR, and 100+ acoustic features entirely on-device. Audio is captured, analysed, and immediately deleted. No audio leaves the phone, ever. GDPR by architecture, not by promise.
04
Nurse Navigator dashboard
A Live Recovery Score per patient: green is stable, amber is monitor, red is call now. One nurse can monitor far more patients than traditional daily phone follow-up, because she only acts on the patients who actually need her.
05
Sentinel Alert · 48 hours early
When vocal jitter crosses the clinical threshold of 1.04% (Sara et al., 2020), Tether fires an immediate nurse alert, before the patient feels anything. Most readmissions are caught while they are still preventable.

The arithmetic is
almost embarrassing

30 : 1 · RETURN ON SPEND
One readmission SEK 160,000
Tether per patient SEK 500

Monitoring 100 patients costs SEK 50,000. Preventing just 1 of 15 expected readmissions triples the spend. Preventing all 15 saves SEK 2.4 M on that same investment.

Patients

Supported without being overwhelmed. 15 seconds a day, nothing more. No forms. No login battles. No "is this serious?" guessing.

Nurses

Act only when an alert fires. No routine call-arounds. No burnout admin. The dashboard tells you exactly which patient needs you, and why.

Hospitals

Stop absorbing avoidable readmission costs. Free up beds. Comply with national post-discharge policy, measurably.

Every competitor was
built for the wrong continent

Vocalis, Sonde, and HealthMode are cloud-heavy, English-only, hardware-dependent, and built for US private insurance. Rebuilding them to compete in Sweden, let alone the rest of the EU, would take two to three years minimum.

Feature Tether Vocalis / Sonde / HealthMode
On-device processing · no audio leaves the phone✓✕
No hardware required✓✕
26-language support✓✕
EU MDR + GDPR compliant architecture✓✕
Guardian NLP plain-language translation✓✕
Prescribable via Sweden's 1177 national portal✓✕
Swedish LOU public procurement compatible✓✕
Bias-free · patient compared to themselves only✓✕

The moat is not a single feature. It is a stack of decisions that competitors cannot copy quickly.

Team Avlynor

A founding team built around the three things this product actually needs: clinical insight, engineering velocity, and biomedical research depth.

Nitya Mahelay
Co-founder · CEO
nmahelay09@gmail.com +46 73 475 4990 linkedin.com/in/nityamahelay
Arhan Harchandani
Co-founder · CTO
arhan.harchandani@gmail.com +971 52 313 5270 arhan.dev
Kar Yan Su, PhD
Co-founder · Clinical Research
cayenne.sky@gmail.com +46 76 060 9108 linkedin.com/in/kar-yan-su

Bring Tether to your discharge ward.

For Nordic hospitals, regional health authorities, and insurers. We will set up a 30-minute call to walk through the engine, the dashboard, and a pilot proposal tailored to your operating context.

Or reach Nitya directly at nmahelay09@gmail.com.