HABLA OCHO IDIOMAS Sthenos está ahora en inglés, español, francés, alemán, japonés, italiano, portugués de Brasil y griego: la app, los widgets de la pantalla de inicio, la app del reloj y las complicaciones, hasta los permisos de Salud que lees al abrirla por primera vez. La reflexión del día también responde en tu idioma, pero solo cuando el modelo en el dispositivo lo habla de verdad. Si le pides un idioma para el que no fue entrenado, produce una imitación convincente en lugar de negarse, y eso te sirve peor que un texto en inglés: en ese caso la tarjeta se queda en inglés. VOICEOVER Y TEXTO GRANDE • Ahora cada gráfico se describe solo: dónde está la lectura, el rango que cubrió, cuántas lecturas contiene y hacia dónde va. La dirección se juzga sobre toda la serie, así que un único pico en un extremo no puede nombrar una tendencia. • Las cuatro pestañas son accesibles de principio a fin, y se anuncia en cuál estás. • El texto sigue de verdad tu ajuste de tamaño. Los números que se quedaban pequeños por muy grande que lo pusieras ahora escalan, y las filas densas se reorganizan en lugar de cortarse. • Los controles de solo icono y la decoración están etiquetados u ocultos, así que una fila se lee como una frase y no como cuatro fragmentos sueltos. CORREGIDO • Una puntuación de cero ya llega al widget y al reloj. Podían seguir mostrando el número anterior mientras la app mostraba correctamente cero: un día realmente agotado se confundía con falta de datos. Todo se sigue calculando en tu dispositivo. Sin cuenta, sin servidores, sin seguimiento.

This is the largest update Sthenos has had. It carries 2.4 and 2.5 as well, which only ever reached TestFlight. A NEW LOOK, ON ONE IDEA Your body is a vessel, and the waterline is the reading. • The score now fills a heart that empties as you deplete and refills as you recover, with a surface that settles as you do. The number lives inside it and inverts where the waterline crosses. It beats at your measured resting heart rate — tap it to see the rate. • Sleep, Recovery, Heart and Freshness are the same vessel at a sixth the size. Tap any of them for a plain-English explanation. • Trends draws your history as a tide, with the colour running along the curve, so a rough fortnight reads warm and a good one reads cool before you've read a number. • "Fatigue" is now "Freshness" — the same figure the right way up. 100 means fully absorbed. NEW: VITALS Every reading your watch takes, each on a rail that shows your own normal range and where today sits: heart rate, resting HR, HRV, blood oxygen, respiratory rate, VO₂ max, steps, active energy, sleep, wrist temperature and weight. Drag one to the top to promote it. These are read-outs — they don't feed the score. NEW: TRAINING LOAD Fitness (42 days), Fatigue (7 days) and Form, built from the training impulse of each workout, with the raw daily load drawn underneath so the sessions behind the averages are visible. Plus the acute:chronic ratio and its sweet spot — and an honest note in About about how contested that ratio is. NEW: FITNESS AGE At the foot of Trends, four weeks of readings scored against published population reference curves. It's the one place in Sthenos that compares you with other people rather than with your own baseline, so it sits apart from everything else and About explains why. WIDGETS AND WATCH • Home-screen widgets redesigned, plus two new configurable Vitals widgets — a four-metric and an eight-metric grid, every slot your choice. Both stay readable in Tinted and Clear. • The watch app now speaks the same visual language, reads Apple Health directly, and adds Vitals and Training Load pages. • Complications: the score as a filling heart, a new Training Load complication, and a configurable single-metric one. FASTER, STEADIER • Trends now opens on what it already knows and only recalculates what has changed, off the main thread. Ninety days and six months are quick. • The score refreshes hourly in the background, so it's current when you look. • Fixed the watch and complication occasionally dropping to zero, and the false "your energy dropped" notifications that came with it. • Health permissions can be re-requested from About, for metrics you turned down the first time. Everything is still computed on your device. No account, no servers, no tracking.

Improvements in the Sthenos algorithm, so it's more accurate

Fixed some cosmetic bugs in the UI of both the iPhone and the Watch apps

Fixed a bug that prevented Apple Watch app to display the correct score

Sthenos is the next generation of Body Battery — a new name and a rebuilt engine. • New name: Body Battery is now Sthenos (Ancient Greek for strength and vigor). Same app, same account, same data — a sharper identity. • A smarter score: rebuilt from the ground up. Instead of a daily rating, your energy is now a live level that recharges with genuine rest and sleep and drains with activity and stress — tuned to your personal baseline, with training fatigue that carries over day to day. • Energy Flow: see whether you're charging or draining right now, and why. • Redesigned onboarding, and a new About tab that explains the science with links to the research. • On-device AI insights, powered by Apple Intelligence. • Now runs on iOS 18 — you no longer need the latest iOS. • Leaner privacy: the app now requests only the health data it actually uses. • Consistent Trends charts, plus Apple Watch and widget refinements. As always, everything is computed privately on your device.

Removed Wrist Temp and Resp Rate from the calculation. Aslo fixed some bugs