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n1 · the free training app

Today’s workout. Already built.

n1 builds each session from your recovery, your history and the kit you have. Open it and train.

Build my first workout

Free · Every feature · No credit card

How is n1 free? Its makers also make supplements.

  • 300+exercises
  • 17programs
  • 5languages

What n1 read

Recovery · per muscle
  • Chest100Fresh
  • Back72Ready
  • Shoulders51Recovering
  • Arms84Fresh
  • Legs38Tired
  • Core92Fresh
Readiness
GoodTrain as planned.
Last time

Incline Dumbbell Press10 × 22.5 kg · Just right

Your kit
  • Dumbbells
  • Bench
  • Barbell
  • Cables
  • Bands
  • Bodyweight
+ Log

Today · 4 rounds

20–25 min

Horizontal

Superset · 4 rounds1.5 min rest
1A
Incline Dumbbell Press10 reps · 25 kg
1B
Chest-Supported Dumbbell Row12 reps · 35 kg
Open slotn1’s pick · Seal Row2 × 10 · 30 kg · 3 min rest
Start workout

Today · built

Try another kit
  1. 1Recovery readLegs tired at 38. Chest, arms and core fresh.
  2. 2Readiness 73 · GoodTrain as planned.
  3. 3Kit matchedDumbbells and an adjustable bench.
  4. 4Lifts pickedA push and a pull as a superset, plus an open slot for n1’s pick.
  5. 5Weights setFrom your last sets and how they felt. Swap any lift before you start.
Ready · 20–25 minExample

How is n1 free?

The makers of n1 also make supplements.

n1 is made by Sunfluencer USA LLC, which also makes supplements. Where n1 suggests vitamin D or omega-3, it can show its makers’ own, marked “From the makers of n1”. Your health data never decides what you see, and every habit works with any brand. The card shows at most one day in seven, the same for everyone.

An n1 Spotlight card: Sunfluencer SUN, vitamin D3 and K2, with See what’s in it and Not for me, and the line From the makers of n1, the same card for everyone.

Recovery

Every muscle keeps its own clock.

n1 tracks 26 muscles, each on its own clock, shades them from fresh to wrecked and says when each is ready again. Every clock learns your pace from your own sets and your own answers.

By muscle group

ChestFreshReady now
BackReadyFresh in 18 h
ShouldersRecoveringFresh in 31 h
ArmsFreshReady now
LegsTiredFresh in 44 h
CoreFreshReady now
  • Fresh 80+
  • Ready 60+
  • Recovering 40+
  • Tired 20+
  • Wrecked
Example
The n1 Recovery screen: front and back body figures shaded by band. Most muscles are fresh; the shoulders and lats are recovering. Back is ready on Wednesday at 09:00.

Progress

See where each lift is going.

Your best set each week becomes an estimated max. From eight weeks of sets, n1 draws a forecast for the lift, with its error band.

Biggest mover · since Aug 24Goblet squat
12 → 22kg

+83 % since Aug 24. 10 kg more for the same 10 reps.

Example
Estimated max for the goblet squat, best set each week, from 16 kg on Aug 24 to 29 kg on Oct 12, then a forecast band of 29 to 35 kg by Nov 23. 152535AUG 24OCT 12NOV 23 FORECAST 29 kg
Your est. max, best set each weekForecast, 29–35 kg by Nov 23
n1 Progress, Strength: goblet squat from 12 to 22 kg, plus 83 percent, with a chart of the estimated max and a forecast of 29 to 35 kg by Nov 23.

Also in n1

Everything in n1
  • Readiness
  • The session
  • Easy and Expert
  • Programs
  • Pull-up path
  • Posture warm-up
  • Food and protein
  • The Circle

Your data

Your data is not for sale.

  • Never sold.

    We don’t sell or rent your data. n1 has no ad networks and no third-party analytics.

  • Health data stays out of marketing.

    Data from Apple Health and Health Connect is never used for advertising or marketing, and never decides which supplement or product you see.

  • Take it, or delete it.

    Download everything as JSON or CSV in Settings ▸ Data & privacy. Delete your account in Settings ▸ Account.

This website has no trackers and sets no cookies.

Questions

What does n1 cost?

Nothing. Every feature is free. There is no subscription and no credit card.

Do I need to install anything?

No. n1 runs in your browser at app.iamn1.app. To keep it on your home screen: on iPhone, open it in Safari, tap Share, then Add to Home Screen. On Android, open it in Chrome, open the menu, then Install app or Add to Home screen.

Is there an iPhone or Android app?

They arrive with the store release, with the Apple Watch and Wear OS apps. Until then, use n1 in your browser.

What equipment do I need?

Whatever you have. Tell n1 your kit, from a full gym to a pair of dumbbells, and it plans around it. You can change your kit any time.

Is n1 medical advice?

No. n1 is a fitness tool. Talk to a doctor before you start training, especially with a heart condition, a pregnancy or a recent operation.

More answers on the support page

Your first workout is a few questions away.

Answer a few questions about your training and your kit. n1 builds the first session.

Build my first workout

Free · Every feature
· No credit card · No install