Get Treblew

For iPhone and Apple Watch

Every swing, set and rally, recorded.

Treblew is an app for iPhone and Apple Watch that records your sport and training, and shows you how it’s going.

43 activities, from golf and tennis to running, strength and yoga.

Download Treblew on the App Store

Free to use.
Treblew Pro is optional.

A golf practice in Treblew: average tempo 3.2 to 1, 7 swings detected by Apple Watch, with backswing and downswing times A tennis session in Treblew: 82 minutes, 412 hits detected, and the heart rate and energy Apple Watch measured A pickleball session in Treblew: 75 minutes, 399 hits detected, and the heart rate and energy Apple Watch measured A strength workout in progress in Treblew: set 2 of 3 of the bench press, 5 reps at 100 lb, with the sets done so far Treblew’s Today screen: the run planned for now, Apple Health activities to review, and what’s up next
Two positions of a push-up, drawn as a muscle diagram and seen from the side. Start: a straight line from head to heels, on the toes, arms straight with the hands on the floor directly below the shoulders. Bottom: the same straight line lowered until the chest is just above the floor, elbows bent back close to the sides. The chest, the back of the upper arms and the shoulders are coloured red; the trunk and the glutes a paler orange.

Exercise guide

Push-Up

Primary: Chest, Triceps, Shoulders

3 × 12 planned

Two positions of a barbell bench press, drawn as a muscle diagram and seen from beside the bench and slightly above. In both, lying face up on a flat bench with the head, shoulders and hips on it and the feet flat on the floor, hands on the bar slightly wider than the shoulders. Start: arms straight, the bar above the chest. Bottom: the bar lowered to the chest, elbows bent out to the sides and level with the bench top. The chest is coloured red; the front of the shoulders and the back of the upper arms a paler orange.

Exercise guide

Bench Press

Primary: Chest

3 × 5 planned

  • No ads
  • No tracking
  • No third-party analytics
  • Strength
  • Golf practice
  • Golf round
  • Tennis
  • Pickleball
  • Running
  • Badminton
  • Squash
  • Cycling
  • Open water swimming
  • Pool swimming
  • Walking
  • Circuit training
  • Core
  • Cross-country skiing
  • Downhill skiing
  • Elliptical
  • Functional strength
  • HIIT
  • Hiking
  • Indoor cycling
  • Pilates
  • Rowing
  • Snowboarding
  • Stair climbing
  • Stretching
  • Wheelchair, running pace
  • Wheelchair, walking pace
  • Yoga
  • American football
  • Baseball
  • Basketball
  • Boxing
  • Climbing
  • Dance
  • Hockey
  • Kickboxing
  • Martial arts
  • Paddling
  • Soccer
  • Table tennis
  • Volleyball
  • Other

Golf · At the range

From the range to the 18th green.

Tempo from your Apple Watch, an AI read of a swing you film, your own clubs, and your round hole by hole.

  1. DetectedTreblew Pro

    Apple Watch picks up your swings at the range and estimates its tempo, backswing to downswing. Practise with a number to aim for.

  2. DetectedTreblew Pro

    From your watch’s motion, estimated: each swing’s tempo, backswing and downswing, and its path to impact.

  3. Treblew Pro

    Film a swing with your iPhone. Treblew picks a few frames on your phone, and an AI reads what’s visible and what to try next. The video stays on your iPhone.

  4. Your clubs, named, with their length and loft, in bags you choose from. Each club’s GPS distance from your rounds, its usual range, and your own carry estimate.

  • Enter a swing’s carry yourself, and see your average carry by club.
  • Draw your own lines on a swing clip, and play it at ¼×. Save or share it with only the lines you show, in slow motion at ¼×.
  • Tag a swing or a shot: its strike, the line it started on and its curve.
A golf practice in progress in Treblew, detected by Treblew with Apple Watch listening: 16 swings and an average tempo of 2.7 to 1, estimated; swing 16 at 2:05 PM, its tempo 3.06 to 1, backswing 1.110 s and downswing 0.360 s; swing detection on Auto; and swings 16, 15 and 14, each detected, at 3.06, 3.25 and 2.76 to 1
A swing’s 3D replay in Treblew, face on: tempo 3.02 to 1, backswing 1.102 s, downswing 0.365 s, and the swing’s path to impact, all estimated from the watch’s motion
Swing 1’s 3D replay playing face on, from takeaway through impact to the finish, its path in golf green, estimated from the watch’s motion
A swing analysis in Treblew, clear enough to assess: the takeaway and top look settled and the change of direction is the place to work; what the AI noticed at the top, starting down and near impact; a counted rhythm rehearsal to try; and what a smoother change of direction may mean
Your bag in Treblew: two bags, one active, and your clubs by name, each with its length, its loft and your own carry estimate
Treblew on Apple Watch at a golf practice: swing 16 detected, its tempo 3.06 to 1, the average 2.7 to 1 over 16 swings, heart rate 114 Swing 16 on Apple Watch, detected: its tempo 3.06 to 1 and its timing, 1.106 and 0.362 seconds, both estimated The practice’s 16 swings on Apple Watch: swing 16 at 3.06 to 1 and swing 15 at 3.25 to 1, with the time of each and the heart rate

Golf · On the course

Your round, hole by hole.

  1. Free on iPhone

    Your score, putts and shots on every hole, with the GPS distance to the green where the course data has it.

  2. DetectedRound tracking on Apple Watch: Treblew Pro

    On Apple Watch, round tracking adds shot detection: each shot detected from your watch’s motion.

  3. Each shot’s GPS distance to the next, in a straight line, with its margin. Your shots numbered and joined where you hit them, and where you are now, a dashed line from your last shot.Course data © OpenStreetMap contributors (ODbL 1.0) via OpenGolfAPI

  4. Finish the hole yourself, then enter your score and putts.

  5. Each hole’s score against its par, your total and where you stand to par.

Hole 1 of a golf round in Treblew, par 4 at Pine Ridge Golf Club: no shots yet, its length 344 m, 325 m to the green ±5 m from you, and Record shot The same hole after the drive: shot 1 with the driver, detected by Apple Watch, its tempo 3.08 to 1 estimated, and 113 m to the green The same hole after the approach: shot 1 with the driver, 212 m ±7, and shot 2 with the 7 iron, both detected by Apple Watch, and 5 m to the green Hole 1’s review, opened with Finish hole 1: the approach with the 7 iron, detected by Apple Watch, its estimated tempo, and the score, 4, and putts, 2, entered above Save score The round’s scorecard in Treblew after hole 1, with the golfer on hole 2’s tee: hole 1 scored 4, par; to par E, score 4; the holes not yet scored empty The scorecard after hole 2: its 2 circled, a birdie; to par −1, score 6 The scorecard after hole 3: its 5 in a square, a bogey; to par E, score 11 The scorecard after hole 4: its 5, par; to par E, score 16, and 16 out so far

Racket sports

Count your hits.

Tennis, pickleball, badminton and squash, recorded on Apple Watch.

  1. DetectedTreblew Pro

    Stroke detection on Apple Watch: your hits, and your forehands, backhands and serves. Treblew names each stroke after learning yours in a short calibration; how well it names them varies from player to player, and you can correct any.

  2. DetectedTreblew Pro

    Stroke detection on Apple Watch: your hits, and your dinks, forehand and backhand drives, and serves.

  • Rally recording with your iPhone’s camera: each rally cut into its own clip, and in tennis each point its own row. Detected Treblew Pro
  • Time, heart rate and energy for every session, free.
A tennis session in Treblew: 82 minutes, 412 hits detected, and the heart rate and energy Apple Watch measured A pickleball session in Treblew: 75 minutes, 399 hits detected, and the heart rate and energy Apple Watch measured
A forehand’s sheet in Treblew: Stroke 7, estimated a forehand topspin, and its 3D replay from behind, the hand’s path round the elbow in tennis orange, estimated from the watch’s motion
The forehand’s 3D replay playing from behind, from the stroke’s start to just after the contact
A forehand drive’s sheet in Treblew: Stroke 7, estimated a forehand drive, and its 3D replay from behind, a left hand’s path round the elbow in pickleball pink, estimated from the watch’s motion
The forehand drive’s 3D replay playing from behind, from the stroke’s start to just after the contact

Strength

Your plan, set by set.

  1. A workout plan with sets of reps or timed sets, with the rest between sets timed.

  2. Treblew Pro

    Your planned workout follows you onto Apple Watch.

  3. Instructions for 129 exercises, each with a muscle diagram.

  4. 1 plan free at a time; more plans with Treblew Pro.

An Upper body workout in progress in Treblew, 1:13 in: 4 of 11 sets done, in set 2 of 3 of the dumbbell bicep curl, 10 reps at 12.5 kg, 0:08 in, with Complete set, set 3 next The same workout’s exercises in Treblew: Lat Pulldown, 3 × 10 at 45 kg, 3 of 3 sets done; the dumbbell bicep curl, 3 × 10 at 12.5 kg, 1 of 3, its set 2 under way; Dumbbell Bench Press, 3 × 8 at 40 kg, and Hammer Curl, 2 × 10 at 12.5 kg, still to do The dumbbell bicep curl’s guide in Treblew, opened from its picture mark: a muscle diagram in two positions, the biceps its primary muscle and the forearms its secondary, and its first step, holding the dumbbells at your sides The same workout at 1:27, set 2 of the curl completed: 5 of 11 sets done, resting before set 3 of 3, Rest +0:11, the rest 11 seconds past the planned 0:30, with Start set, and the dumbbell bench press next
Set 2 of 3 of the dumbbell bicep curl on Apple Watch in Treblew, 10 reps at 12.5 kg, in set 0:08, with Complete set, set 1 done at 10 × 12.5 kg; heart rate 86 The Upper body workout’s exercises on Apple Watch: 4 of 11 sets, Lat Pulldown’s 3 sets done, the dumbbell bicep curl at its set 2 of 3, then Dumbbell Bench Press and Hammer Curl; heart rate 88 The dumbbell bicep curl’s guide on Apple Watch in Treblew: its muscle diagram in two positions An Upper body workout on Apple Watch in Treblew: set 3 of 3 of the dumbbell bicep curl, 10 reps at 12.5 kg, Rest +0:11, the rest 11 seconds past the planned rest, with Start set; heart rate 76

Running

Your running form, from your wrist.

  1. Treblew reads your runs from Apple Health, with your permission, or records them on your iPhone or Apple Watch.

  2. A run’s page shows what your watch measured.

  3. Measured

    Heart rate and its zones, pace, distance and your route, measured by Apple Watch.

  4. Measured

    Running form: Apple Watch SE, or Series 6 and later, on outdoor runs.

  • Keep the running app you like. Every run in Apple Health can count toward your goals, once you’ve reviewed it in Treblew.
A run in progress in Treblew, Apple Watch recording it: 5 minutes 13 seconds in, 0.41 km at 12:50 per km, heart rate 97 in zone 1, 18 kilocalories The same run 16 minutes in: 1.16 km at 13:47 per km, heart rate 98 in zone 1, and the energy so far The same run 27 minutes in: 1.94 km at 13:57 per km, heart rate 98 in zone 1 The same run 36 minutes in: 2.59 km at 14:01 per km, heart rate 108 in zone 1
The finished run’s page in Treblew: 36 minutes 44 seconds; its route, a loop of 2.6 km marked kilometre by kilometre; Along the run, its pace, heart rate and elevation through the run; each kilometre’s pace; and what Apple Watch measured, down to the running form, stride length 0.62 m, vertical oscillation 6.8 cm and ground contact 312 ms
A run in progress on Apple Watch in Treblew: 5 minutes 13 seconds, 0.41 km at 12:50 per km, 18 active kilocalories, heart rate 97 in zone 1, 96 to 114 beats per minute The finished run on Apple Watch in Treblew: 36 minutes 44 seconds, 2.60 km at 14:07 per km on average, average heart rate 98, maximum 113 The finished run’s route on Apple Watch in Treblew: 36 minutes 44 seconds, the route drawn as a line from its start, with no map

Running

Measured
Distance
2.60 km
Pace
14:07 per km
Stride length
0.62 m
Vertical oscillation
6.8 cm
Ground contact
312 ms

Goals

Everything you do counts toward what you’re after.

Breaking 90 isn’t only rounds and range time. One session can count toward several of your goals.

A goal in Treblew, Break 90: 3 sessions and 140 minutes this week, and the sessions each week against a dashed line at the target of 4

Set a goal

In your own words, with a weekly target.

A new goal’s name, in your own words: Break 90Its weekly target: sessions, 4 a week, set in the new goal form

Everything counts

Golf, a workout, a run: each session you add to it.

See it on Today

Your week, the moment you open the app.

Weekly targets on Today: Break 90, 3 of 4; Run more, 120 of 180 minutes

Coach

Ask about your training.

Coach answers from what you’ve recorded. Coach is AI, and its answers aren’t medical advice.

Coach sends your question and the parts of your Treblew history it needs to OpenAI, only after you allow it. Health measurements go only if you allow that too, and only when your question needs them.

Free includes 15 questions a month; Treblew Pro includes more.

An answer from Coach in Treblew, 93 at Pine Ridge: where the shots went, what happened, what you noted and Coach’s read
The Coach tab in Treblew: your conversations, and the current picture of your goals, such as Break 90 on a full 18 with 6 sessions in the last 4 weeks

Everything else

43 activities. Free on iPhone and Apple Watch.

Any of 43 activities on iPhone or Apple Watch, with time, heart rate, distance and route where your devices measure them. Goals and a calendar keep your week in view.

Unlimited
sessions on iPhone and Apple Watch, on the free plan.
Apple Health
With your permission, Treblew reads your workouts from Apple Health and saves the ones you record there.
Today, at a glance
What’s planned, what you did this week, and your goals, the moment you open the app.

Tracked in depth8

  • Strength
  • Golf practice
  • Golf round
  • Tennis
  • Pickleball
  • Running
  • Badminton
  • Squash

Distance and pace4

  • Cycling
  • Open water swimming
  • Pool swimming
  • Walking

Fitness and outdoors17

  • Circuit training
  • Core
  • Cross-country skiing
  • Downhill skiing
  • Elliptical
  • Functional strength
  • HIIT
  • Hiking
  • Indoor cycling
  • Pilates
  • Rowing
  • Snowboarding
  • Stair climbing
  • Stretching
  • Wheelchair, running pace
  • Wheelchair, walking pace
  • Yoga

Sports and more14

  • American football
  • Baseball
  • Basketball
  • Boxing
  • Climbing
  • Dance
  • Hockey
  • Kickboxing
  • Martial arts
  • Paddling
  • Soccer
  • Table tennis
  • Volleyball
  • Other

Your privacy

No ads. No tracking. No third-party analytics.

  • Measured values, like your heart rate, stay on your iPhone.
  • Swing and rally videos stay on your iPhone. For an AI swing analysis, only a few frames from the swing you choose are sent.
  • Read the Privacy Policy and the Consumer Health Data Privacy Policy.

Free and Pro

Free to use. Pro when you want more.

What Free and Treblew Pro include
FreeEverything you need to record your sport.Treblew ProFree for a week for new subscribers, then monthly or annual. See the price in the App Store.
Sessions on iPhone and Apple WatchUnlimitedUnlimited
Coach questions15 questions a monthHigher limit
Goals and plans at a time3 goals and 1 planHigher limits
Swing detection, round tracking, stroke detection and planned workouts on Apple WatchA one-off try of eachIncluded
AI swing analysis and rally recordingA one-off try of eachIncluded
Video tempoNot includedIncluded
Download Treblew on the App Store

Treblew Pro is an optional auto-renewing subscription, bought in the app through the App Store. Cancel at least 24 hours before it renews, in your Apple Account’s subscription settings.

Questions

Anything else: support@treblew.com

Do I need an Apple Watch?

No. You can record any of the 43 activities on your iPhone. Apple Watch adds heart rate from your wrist, and Treblew’s own watch features: swing detection, round tracking, stroke detection and planned workouts, with Treblew Pro.

What does Treblew detect, and what does it estimate?

Swings, shots and hits are detected by Treblew from your watch’s motion, and you can review and correct anything it detects. Tempo and stroke names are Treblew’s estimates from that motion, not measurements of the club or the ball. Golf distances on the course are GPS distances, shown with their margin.

Which sports does Treblew know best?

Golf, tennis, pickleball, badminton, squash, strength and running get the most, and all 43 activities can be recorded, planned and counted toward goals.

Where does my data go?

Measured values like heart rate, and your swing and rally videos, stay on your iPhone; for an AI swing analysis, only a few frames from the swing you choose are sent. Coach sends your question and the parts of your history it needs to OpenAI only after you allow it. The Privacy Policy has the full detail.

How do I cancel Treblew Pro?

In your Apple Account’s subscription settings, or in Treblew under Settings › Treblew Pro › Manage subscription, at least 24 hours before it renews. Treblew Pro then lasts until the end of the period, and what you’ve recorded stays yours to read.

Start your next session with Treblew.

Download Treblew on the App Store

For iPhone and Apple Watch.