shinobi.fit

What It Is

Shinobi is a browser-based tool for endurance sports and HYROX/race preparation, positioned as an “Endurance & Race Readiness Tracker.” It builds a race index across running, triathlon, cycling, swimming, OCR, adventure, multi-sport, and special events, and uses a tier system to map users from 5K, half marathon, and Olympic triathlon through to ultra-distance challenges.

Core Capabilities

According to the page, Shinobi asks users to enter 32 metrics covering cardio, running, swimming, cycling, strength, sleep, and nutrition, such as VO₂, threshold pace, FTP, CSS, resting heart rate, weekly training load, average sleep, and carbohydrate intake. The system calculates readiness for specific events, shows the gap between the user and the target race across 7 demand axes, and then converts those gaps into a personalized training plan. Its scoring mechanism is described as including five weighted components, a weakest-link penalty, and research-based thresholds, but the page does not specify any particular AI model or machine-learning method.

Pricing and Privacy

The text does not disclose pricing, subscriptions, or paid features. The current version emphasizes “no account, no backend, fully local,” with data stored only in the browser’s LocalStorage and never leaving the user’s device. This is a clear advantage for privacy-conscious athletes, but it also means cross-device sync, long-term backup, and recovery capabilities may be limited.

Pros and Cons

Its strengths are that it is easy to get started, requires no registration, offers a rich metric framework, and uses race difficulty plus tier progression to make training goals feel more concrete. It covers a broad range of event categories and is well suited to pre-race gap analysis. The limitations are that its AI capabilities are not explained in much detail, and the reliability, validation approach, and safety boundaries of its personalized training plans are not disclosed. Native apps, watch sync, Partner Mode, and other features are still in the coming soon stage, while Chinese-language support, customer service, and payment methods are also not clearly stated.

Who It’s For and Access from China

Shinobi is suitable for runners, triathletes, cyclists, and trail/OCR enthusiasts who have clear race goals and want to self-assess their readiness. If you need coach-level periodized planning, automatic device sync, or a Chinese-language ecosystem, it may be worth comparing it with TrainingPeaks, Strava, Garmin Connect, Intervals.icu, and similar platforms. The text does not provide information on access or payment availability from mainland China, so this remains unknown.