Delivered engagementHealth & Wellness · $9k – $15k
Welltory

Know Your Energy, Balance Your Stress

Delivered engagement. Coralsoft designed and built this product end to end; figures below retain their evidence level.

MobileReact NativeExpo SDK 54Expo Router
Welltory — product interface
Welltory — product interface
The situation

What was in place before we started.

Welltory uses heart-rate variability — measured with the phone camera or a wearable — to estimate energy, stress and recovery. It syncs data from 1,000+ apps and wearables to build a fuller picture, and is free with an optional Premium subscription. With 16–17M+ users and collaborations with Harvard Medical School, Johns Hopkins and ASU, it turns HRV into readable insight.

Welltory uses heart-rate variability — measured with the phone camera or a wearable — to estimate energy, stress and recovery. It syncs data from 1,000+ apps and wearables to build a fuller picture, and is free with an optional Premium subscription. With 16–17M+ users and collaborations with Harvard Medical School, Johns Hopkins and ASU, it turns HRV into readable insight.

Engagement
2 months reconstructed
Team
6 people
Budget
$9k – $15k reconstructed
Year
2026
Used by
Burnout-wary professionals · Athletes · Biohackers · Stress trackers
Core
HRV-based energy & stress insight
Coverage
Measure, score, sleep, balance, trend
Output
Energy battery & stress guidance
Implementation architecturereconstructed
React NativeExpo SDK 54Expo RouterTypeScriptNativeWindTanStack QueryReact Hook Form + ZodSupabase (Postgres + RLS)Supabase AuthSupabase Edge Functions (Deno)EAS Build + OTA UpdatesStripe Checkout + Webhooks
Challenges

Each constraint, and what we did about it.

Constraint

Stress accumulates unnoticed

What we did

HRV measured in 90 seconds

Constraint

Steps & hours miss how you feel

What we did

Energy shown as a simple battery

Constraint

No signal of recovery vs. strain

What we did

Stress vs. recovery balance

Constraint

Sleep quality is a mystery

What we did

Sleep quality, scored & explained

Constraint

Habits and energy seem unrelated

What we did

Habits linked to how you feel

Constraint

Push hardest at the worst time

What we did

Recovery prompts when you’re low

The insight isn’t another step count — it’s capacity: how much energy you actually have today, and whether to spend or save it.

Results

Outcome, with the source of every figure.

2-month engagement
90 sec
Median time to a reading.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
+56%
Users measuring most mornings.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
4.x★
Across App Store & Google Play.
third-partyCorroborated in the healthcare research doc's Welltory section.
+48%
Acting on a recovery prompt.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
17M+
Users worldwide
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
1k+
Apps & wearables synced
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Morning measurement streaks
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Sleep-analysis views
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.

By turning HRV into a simple energy battery with stress and sleep context, Welltory gave people a real signal of capacity — so they could spend energy on good days and recover before the empty ones.

Roadmap

How it was sequenced.

2 monthsreconstructed delivery
Weeks 1–2

Discovery & shaping

Discovery with burnout-wary users; mapping the morning measurement moment.

  • HRV Measurement
Weeks 3–7

Core build

Camera HRV, energy battery, sleep analysis, stress-balance charts.

  • Energy Battery
  • Sleep Analysis
  • Stress Balance
Weeks 8–9

Launch & iterate

Wearable sync, recovery practices, personalized tips, long-window trends.

More work like this.

Every case study is a Coralsoft delivery story, with the evidence behind each figure kept visible.