Goal-First Structure
Start with your outcome and ARCYN maps a block that fits your level.
Mobile AI Fitness
The final evolution
of training intelligence
Log in seconds. Get next-step coaching from your own trends.ARCYN translates every session into the next move with zero filler.
Any levelAny goalAny style
For anyone who wants direction without spreadsheets.
Runner’s LabPeak ClubIron CollectiveTempo CrewHybrid HQCoachNetEndurance LabMetronomePaceForgeThreshold Co.LiftLabStrideWorksVelocity HubPeak TempoForm FoundryAthleteOSMarathon MastersPowerStrideElite EngineCadence Co.Speed SyndicateForm FlowPR PursuitChampion’s CircleThe Recovery RoomTrack TribeGear GridRunner’s LabPeak ClubIron CollectiveTempo CrewHybrid HQCoachNetEndurance LabMetronomePaceForgeThreshold Co.LiftLabStrideWorksVelocity HubPeak TempoForm FoundryAthleteOSMarathon MastersPowerStrideElite EngineCadence Co.Speed SyndicateForm FlowPR PursuitChampion’s CircleThe Recovery RoomTrack TribeGear Grid
Progress, uninterrupted.
Minimal taps. Maximum signal. Everything tuned for the way you actually train.
Most apps
Logging + charts you interpret
- You record sessions… then guess what to change.
- Insights are buried in graphs and tabs.
- Plans drift when life changes.
ARCYN
Logging + next-step guidance
- ARCYN reads your recent training and surfaces what matters.
- You get clear next steps: adjust volume, pace, intensity, or recovery.
- Stay consistent without overthinking.
Build a plan.
Set your focus, constraints, and weekly rhythm. ARCYN turns it into a practical starting block.
Recovery Guardrails
Set intensity boundaries so progress keeps moving without redlining.
Hybrid Scheduling
Blend lifting and running days with intent, not guesswork.
Week-One Blueprint
Generate a clean starting week you can actually stick to.
Plan Builder Example
Set constraints. Generate a real week.
ARCYN turns your goal, training availability, and recovery boundaries into a week-one blueprint you can follow immediately.
Choose outcome + timeframe.
Set available days and non-negotiables.
Generate and review week one before starting.
ARCYN Plan Builder
Hybrid Strength + 10K
Primary Goal
Increase bench + maintain 10K pace
Block Length
8 weeks
Training Days
5 days/week
Long Run Day
Saturday
Constraints
No doubles on weekdays
Leg day not before speed session
Max 2 high-intensity days/week
Week 1 Preview
5 sessions
Mon
Upper Push Strength
RPE 7-8
Tue
Easy Run
45min Zone 2
Wed
Lower Strength
Volume + technique
Thu
Threshold Run
3x8min @ 10K effort
Sat
Long Run
70min aerobic
Week one is generated from your constraints first, then ARCYN layers progression targets across the full block.
Log sessions your way.
Track training in seconds, or import completed sessions from Apple Health and Strava.
Quick Log
Capture sets, reps, pace, and RPE fast with smart defaults.
Manual + templates
Apple Health Import
Pull in workouts from HealthKit so your data stays complete.
HealthKit sync
Strava Import
Bring in run sessions and pace trends without manual entry.
Run imports
Quick Log Example
Strength workout logged in seconds.
Use a saved template, adjust the top sets, and log the session with clean structure and minimal typing.
Start from your Push Day template.
Update load, reps, and RPE for the main lifts.
Save once and ARCYN updates volume + fatigue trends.
ARCYN Quick Log
Push Day Template
Strength
Week 3 Day 2
Exercises
4
Sets Logged
10
Elapsed
09:42
Rest Timer
01:30
Bench Press
3 x 8-10
Set
Load
Reps
RPE
OK
1
100kg
8
8.5
•
2
92.5kg
10
8.0
•
3
87.5kg
11
8.0
•
Overhead Press
2 x 6-8
Set
Load
Reps
RPE
OK
1
60kg
8
8.0
•
2
60kg
7
8.5
•
ARCYN auto-fills last session loads, calculates volume live, and updates fatigue trends after save.
Analyze trends over time.
Plot performance, fatigue, and consistency across weeks so progress and adjustments are obvious.
Last 6 weeks
Bench change
+5.0kg
107.5kg -> 112.5kg
Squat change
+7.5kg
147.5kg -> 155kg
Signals
High-RPE sets
9 -> 4
Missed reps
3 -> 1
Sleep consistency
Improving
Bench, squat, and row are all moving up while fatigue markers trend down. ARCYN can progress top-set load by 2.5kg next week.
Trend Graphs
3 charts
Bench e1RM Trend
Estimated 1RM progression
117.5kg115kg112.5kg110kg107.5kg
W1W2W3W4W5W6
Squat e1RM Trend
Estimated 1RM progression
160kg155kg150kg145kg140kg
W1W2W3W4W5W6
Row Top Set Load
Primary rowing movement
95kg90kg85kg80kg75kg
W1W2W3W4W5W6
See ARCYN Think.
Same session. Different coaching minds. Zero filler.
Workout Details
17 February 2026
Distance
5.00 km
Pace
4'34"/km
Avg HR
168 bpm
Cadence
176 spm
Session Overview
Running
Distance
5.00 km
Duration
22m 52s
Pace
4'34"/km
Avg HR
168 bpm
Cadence
176 spm
RPE
8/10
Route Preview
ARCYN Analysis
Primary LimiterFatigue Resistance
ConfidenceHigh
PhaseBuild
Next FocusTempo
Pace dropped ~8–10 sec/km after 3km while HR kept climbing — that’s fatigue, not speed limitation. Add 1×20min tempo at ~4:40/km mid-week and keep your next easy run under 150 bpm. You don’t need more speed. You need stronger fatigue resistance.
Adapts as you improve.
ARCYN responds to your trend—not your last workout.
Week 1
Identify
Flags late-race pace fade + rising HR.
Late KM pace: −10s/km
Week 3
Adjust
Prescribes threshold volume + easier recovery constraints.
Tempo added: 20min/week
Week 6
Stabilise
Pace holds late; progression continues.
Late KM pace: −3s/km
Reach your goals.
Consistency compounds when your next move is obvious.
“10K PR in six weeks—trend snapshots showed exactly what to tweak.”
Sam • Runner
“Post‑workout summaries feel like a coach texting me what matters.”
Ava • Strength
“Clean, fast logging. Less admin, more training.”
Leo • Hybrid
Be an early member
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FAQ
Which platforms?▾
iOS first. Android is on the roadmap.
Do I need to track food?▾
No. ARCYN focuses on training data and turns it into guidance.
How does AI Coach work?▾
After each workout, ARCYN summarizes trends, flags plateaus, and suggests next steps.
Is my data private?▾
Yes. Your data stays yours, always. We never save or sell it.