# RunIntensity: Training Load — Running Readiness & AI Coach

> Smart running app calculating training load with a 5-factor model. (iPhone/iPad app by Zero Di, LLC.)

- Source: https://appshunter.io/ios/app/runintensity-training-load/id6760513963 (this page in markdown: same URL + `.md`)
- Developer: [Zero Di, LLC](https://appshunter.io/developer/1884485197)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Rating: 5.00/5 from 10 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 15 MB
- Languages: American English
- Released: 2026-04-12
- Data updated: 2026-10-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/runintensity-training-load/id6760513963/reviews.md

## What is RunIntensity?

Your 40 miles this week hit like 55. RunIntensity is the running app that knows the difference.

Distance and pace don't tell you how hard a week really was. A hilly run in the heat or a tempo on tired legs costs more than the mileage suggests. RunIntensity scores every run in Stress-Adjusted Miles (SAM), a five-factor training load model built from heart rate, terrain, surface, cumulative fatigue and conditions. Your weekly mileage becomes a weekly training load you can plan around.

TWO NUMBERS, ONE ANSWER EVERY MORNING
RunIntensity reads what your watch already writes to Apple Health and scores two things separately, 0–100:

• Recovery — heart, nervous system and sleep. HRV, sleep and resting heart rate against your own baseline. Snaps back overnight.
• Freshness — muscles, tendons and joints. How much of your recent training your legs have absorbed. Drops with a hard session, climbs back over hours or days.

Then one call: Ready, Steady or Recover. Ready only when both are high; Steady when one system is still catching up; Recover when rest is the workout. Recovered isn't the same as healed — this is the app that knows when you're overdoing it.

KNOW WHAT TO DO TODAY
Your verdict, today's workout, your weekly training load budget and a one-tap start. Widgets, Siri ("What's my readiness?") and Control Center keep it one glance away.

FREE FOR EVERY RUNNER
• Stress-Adjusted Miles — the real cost of every run
• Recovery, Freshness and a daily Ready / Steady / Recover verdict
• Weekly SAM budget with mid-week pacing tips
• 26-week training load charts
• Training planner with periodized phases and race milestones
• Personal records and trophies
• Shoe mileage tracking
• Body soreness tracker — spot patterns before you overdo it
• The peer-reviewed research behind every number

WORKS WITH ANY WATCH
Apple Watch, Garmin, COROS, Polar and more — any run that syncs to Apple Health flows in automatically, duplicates merged. No manual logging.

APPLE WATCH APP
• Workouts from your wrist with live heart rate, pace and distance
• Race Pace interval timer with custom segments and repeats
• Complications and Watch widgets with Recovery, Freshness and today's verdict
• Live Activity on the Dynamic Island during workouts

FRIENDS & THE BOARD — FREE
See how your friends are training: readiness, training load, workouts, reactions, weekly leaderboards, head-to-head challenges and streaks.

COACH BRADY — YOUR AI RUNNING COACH ($19.99/year, 7-day free trial)
An AI running coach that has actually read your training. Every answer is grounded in your readiness, training load and workout history. Coach Brady plans workouts onto your calendar, sends weekly reviews and tracks your goals. Includes the web coach dashboard.

COACH MODE — FOR COACHES ($39.99/year)
Everything in Coach Brady plus unlimited athletes and groups, side-by-side readiness and load comparisons, assigned plans and push notifications when athletes sync.

Coach Brady and Coach Mode require Sign in with Apple and an auto-renewable subscription.

PRIVACY FIRST
Core calculations happen on your device. RunIntensity reads Apple Health but never writes to it, and syncs only what you choose to share. No ads. No analytics SDKs. No tracking. A training tool, not a medical device.

REQUIREMENTS
iOS 17.0 or later; watchOS 10.0 or later for the Watch app (optional). Sign in with Apple for Friends, Coach Brady and Coach Mode.

SUBSCRIPTION TERMS
Coach Brady and Coach Mode are auto-renewable yearly subscriptions charged to your Apple ID at confirmation and renewed automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in Settings > Apple ID > Subscriptions.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://www.zerodi.net/runintensity-privacy

## Key features

- Stress-Adjusted Miles (SAM) calculation
- Daily readiness score
- Readiness-first "Today" home screen
- Training planner with periodization
- Social features to train with friends
- AI coaching options
- Shoe mileage tracking

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Coach Mode — Yearly | $39.99 | per year |
| Coach Brady — Yearly | $19.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/runintensity-training-load/id6760513963/reviews.md

### 5/5 — Game Changer

*2026-04-19*

This app is a total game changer for me. Having these metrics allows me to alter my trainings to avoid injuries, optimize my performance and set more realistic goals. Whoever created this app, I am loving it!

## Frequently asked questions about RunIntensity

### What is RunIntensity's core feature?

RunIntensity's core feature is its Stress-Adjusted Miles (SAM) calculation, a 5-factor model that quantifies the true training load of each run by considering heart rate, terrain, surface, fatigue, and environmental stress.

### How does RunIntensity determine daily readiness?

RunIntensity calculates a daily readiness score using data from Apple Health, including HRV, sleep, resting heart rate, and recent training load. This score helps users decide whether to push hard or focus on recovery each day.

### What are the subscription options for RunIntensity?

RunIntensity offers two subscription tiers: Coach Brady for $19.99/year with a 7-day free trial, providing AI coaching and automatic workout planning. Coach Mode, at $39.99/year with a 7-day trial, includes all Coach Brady features plus athlete management capabilities.

### Does RunIntensity require specific wearable devices?

No, RunIntensity does not have wearable lock-in. It reads data from Apple Health, which can be populated by any GPS watch or phone workout. An Apple Watch is optional for specific features like the Race Pace timer and Live Activity.

### What are the system requirements for RunIntensity?

RunIntensity requires an iPhone with iOS 17 or later. For enhanced features, an Apple Watch with watchOS 10+ is recommended. It utilizes Apple Health data from any compatible GPS device or phone.

### How does RunIntensity handle user privacy?

RunIntensity prioritizes privacy with core calculations performed on the device. It reads data from Apple Health but never writes to it. The app also states it has no ads and no third-party tracking SDKs.

### Can I train with friends using RunIntensity?

Yes, RunIntensity offers free social features allowing you to follow friends' readiness, SAM, and workouts. You can also react and comment on a social board, and participate in weekly leaderboards and head-to-head challenges.

### How often is RunIntensity updated?

The latest version of RunIntensity is 1.0.6, last updated on June 18, 2026. While specific update frequency isn't detailed, this indicates active development and maintenance.

## Version history (last 5 releases)

### 1.1.0 — 2026-09-26

Readiness gets two new signals, and hot days finally count.

• Illness signal — when your overnight wrist temperature or breathing rate runs above your own baseline, Readiness says Recover and tells you why. Needs an Apple Watch that records them.
• Heat — a hot, humid run asks more of you than the same run in cool air. Your Freshness now reflects that, and each workout shows the pace it would have been in cool conditions ("feels like 7:25"). Stress-Adjusted Miles are unchanged, so your weekly totals stay comparable.
• Time on your feet — days well past your usual step count now count as easy walking against Freshness, so a 20,000-step travel day no longer looks like a rest day.
• Your intensity-coloured route maps now appear on the coach web dashboard, with the same Stress / Pace / Heart rate / Elevation views and a fly-through of the route.

Plus the usual round of fixes.

### 1.0.9 — 2026-09-22

Readiness, rebuilt as two numbers and one verdict:

• Recovery (heart, nervous system & sleep) and Freshness (muscles, tendons & joints) are now scored separately, each 0–100
• A daily Ready / Steady / Recover call — Ready only shows when both are high, so a great HRV the morning after a long run reads Steady, not Ready
• Freshness runs on two clocks: a fast one that clears in hours and a slow one that counts the days your legs need after a bigger-than-usual load
• Readiness history replays Freshness hour by hour

Also new:

• Your workout map is colored by intensity — Stress (hills count), Pace, Heart Rate or Elevation — with a fly-by of your route
• Cardio fitness on the Health page: VO₂max and heart-rate recovery from Apple Watch, plus race predictions and training paces from your best race
• Widgets, Siri, Control Center, the coach dashboard and new Apple Watch complications show Recovery, Freshness and today's verdict

Thanks for running with us!

### 1.0.8 — 2026-09-10

Stay signed in, always:

• Your session now renews itself automatically in the background — feeds, friends, and sync keep working without re-signing in
• Accounts created in our earliest releases get a one-time “Secure your session” sign-in to enable the new session security
• Fixed a Settings warning that could stay red from an old Apple Watch location denial

Thanks for running with us!

### 1.0.7 — 2026-08-28

Smarter trophies and a fresher Board:

• Fastest Distances are now yearly trophies — your best 400 m-to-marathon times for the current year, resetting each January
• Indoor rides now count — stationary bike workouts import from Apple Health even when no distance was recorded
• The Board stays fresh — new workouts appear automatically after each sync, and pull-to-refresh now picks up your just-finished run
• Fixed a false “Watch GPS is off” warning in Settings — it now reflects what your last workout actually recorded

Thanks for running with us!

### 1.0.6 — 2026-06-18

• Live Activities now show your run on the Dynamic Island and Lock Screen in real time
• New iOS 18 Control Center controls and Action Button support — start a log or check readiness instantly
• Log strength and plyometric sessions with effort (RPE)
• Performance improvements and bug fixes

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## Related topics

[loads training](https://appshunter.io/ios/topics/loads-training)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-07.*