Step 1 of 3
Connect and get your scorecard
Nox reads your workouts, steps, sleep, weight and meals from Apple Health or Health Connect, then grades your last 30 days across six areas, in plain words.
Achieve your peak health with Nox.
Nox AI reads your training, food and sleep, plans your weeks, and checks every lift, meal and night.
Try NoxExample goals: Bench 225 lb, Down to 180 lb, Run a 5K, Squat 315 lb, Sleep 7 h a night. For each, Nox AI picks the three things to track from your Apple Health data.
Goal
Strength
3
a week steady
Endurance
7,557
steps up 18%
Mobility
2
a week steady
Nutrition
2,731
kcal steady
Recovery
6h 37m
a night steady
Vitals
186.1
lb steady
9:41
48:12.34
ZONE 2
128
21:40TIME
IN ZONE
121BPMAVERAGE
HR
How it works
Step 2 of 3
Get a plan
Pick a goal. Nox works out the three things that move it most, and puts a date on your plan.
Your goalsBench 225 lbDown to 180 lbRun 5KNox AIGoal date on your plan14 DecStep 3 of 3
Track your progress on the plan
Every lift, meal and night you log counts. The chart shows how far you have come, and where your pace lands.
1Every logged single goes on the line.
2Your pace runs on to where it meets the goal.
3That point is your date: around 30 Nov, two weeks early.
2,700 kcal a day
Then, every day
Log your lifts and meals as you go. Nox reads each entry and tells you where the day stands.
- Tick each set as you finish it.
- Beat last week and Nox marks the set as a PR.
- Sets and volume add up while you train.
Nox AI
Six trackers, one coach
Lifts, runs, food, water, steps and sleep. Nox sets each one a target from your own numbers, fills it from your phone, your watch or a quick log, and tells you what to do next.
Moves the goal: Bench 225 lb by mid December
Every set lands on a muscle.
- How it fills
- Log sets as you train, or sync a workout from your watch.
- Your target
- Sessions a week from where you lift now: 2 to start, then 3.
Compete with friends
Invite friends to one of your targets. Each of you gets your own number, and the leaderboard ranks you on how often you hit it. Track Record puts your lifts side by side, week by week.
Track Record
Maya has not lost a session since August. You're one behind her, and the closest anyone has come.
RankingsMet / Missed
Maya
63d31 / 0Streaks
1Oct
2Oct
3Oct
4Oct
5Oct
6Oct
7Oct
8Oct
9Oct
10Oct
You21d26 / 1
Jordan28d25 / 24
Tyler14d25 / 2
Tyler14d25 / 25
Emily35d24 / 3
Emily35d24 / 36
Megan21d23 / 4
Megan21d23 / 47
Daniel7d22 / 5
Daniel7d22 / 58
Chris7d20 / 7
Chris7d20 / 7Deadlines are midnight in each member's own timezone.
You205lbJordan195lbMaya165lb
Best · Sep 1 - Oct 5
Progress
205 lb +20 · Sep 1 - Oct 5
Days logged, out of 35: You 10 · Jordan 13 · Maya 11
From people using Nox
“I’ve been motivated to work out regularly, and even pushed myself on some days to finish my steps!! Would recommend the app to anyone looking to form a habit.”
“Extremely motivational app that makes me want to follow my goals even if I am not up for it. Very smooth and the AI is very effective in giving workable suggestions with respect to your goals”
Questions
Which phones and watches does it work with?
Nox is on iPhone and Android. It reads Apple Health on iPhone and Health Connect on Android, so if your watch, ring, scale or another app saves there, Nox can read it. You choose which kinds of data it sees. No watch? Health sync is optional, and you can log lifts and meals in the app.
I log in Hevy or Strong. Do I have to switch?
No. If Hevy or Strong saves your workouts to Apple Health or Health Connect, Nox reads them like any other workout. To bring your past sessions over, export a CSV from either app and send it to Nox AI in a chat.
What goals can I set?
Goals with a number on them: lose fat, put on size, lift a heavier top set, run a faster time or a new distance, sleep more or move more. You can work toward several at once.
How does Nox work out my goal date?
From fixed rates in published research, worked out in code rather than by the AI. Fat loss is paced at 0.5 to 1% of your body weight a week. For a lift or a run, you pick the timeframe and Nox sets a number you can reach by then (for lifts, based on how long you've been training). As you log, Nox projects when you'll land from your last four weeks and shows whether you're ahead or behind.
How is this different from asking ChatGPT?
Nox AI coaches from your own numbers: your goals and plan, every lift and meal you log, and the health data you let it read. It remembers what you've told it from one chat to the next and tracks your plan every day.
What does Nox do with my health data?
The raw records Nox reads from Apple Health or Health Connect stay on your phone. Nox sends its servers summaries, like one line per workout, daily totals and each night of sleep, and Nox AI (which runs on OpenAI) uses them to coach you. Nox never sells your health data or uses it for ads. You can delete your account in Settings, and Nox erases your data from its servers within 48 hours. Privacy policy
What if I skip a day?
If a target is a set number of days a week, a skipped day counts as rest as long as you can still hit the week. If the target is daily, or the week can no longer be hit, the day counts as missed and Nox reminds you. If you keep stalling on a target, or keep beating it, Nox can rework it.
Can I train with friends?
Yes. Invite friends to one of your targets. Each of you gets your own number, and you share a leaderboard ranked on how often you hit it. Only the people in it see that leaderboard, and there's no public one.
Is it free?
Nox is free to download and start. Pro is a subscription with a free trial when you subscribe. You see the price in the app before you pay, and you can cancel any time from your App Store or Google Play subscriptions.
Give your goal a date.
Free to start on iPhone and Android.
Scan with your phone camera