Comparison

IntervalCoach vs Phase

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IntervalCoach

This AI-powered coach adapts your training based on over 60 recovery signals like HRV and sleep. It provides daily readiness assessments and personalized workouts for cyclists, runners, triathletes, and Hyrox athletes. Receive insights into your performance and adjust your plan for optimal results.

Highlights
  • AI-driven daily adaptive training
  • Recovery signal analysis (HRV, sleep, load)
  • Personalized workout targets (power, pace, HR)
  • Goal-oriented training plans
  • Conversational AI coach (Coach+)
  • Race course analysis (Race Recon)
  • Integration with popular wearables and platforms
Features
Read full description

Your training, adjusted to how you actually recovered. IntervalCoach is an AI training coach for cyclists, runners, triathletes, trail runners and Hyrox athletes. It reads 60+ recovery signals, including HRV, sleep, sleep debt, training load and how you feel, and adjusts today's session when the data calls for it. When you are ready, the plan stands. When you are not, it changes and tells you why. TODAY FIRST Open the app and today comes first: your readiness, a coach's outlook and today's session. Next to readiness, a focus tile shows the one thing that matters most right now: a race this week, a health signal, the session you just finished, a load spike, or how your week is going. WHAT YOU GET - Daily readiness from HRV, sleep, resting heart rate, form and training load - Workouts that adapt to your recovery, with power, pace or heart rate targets - A training plan built toward your goal event, with phases and weekly targets - Coach+, a conversational coach that knows your training and can adjust your plan - Race Recon: the climbs, pacing and fuelling of your race course - Post-workout analysis, with what you actually did next to the plan - Signals grouped by recovery, sleep, HRV, load and body - Cycling, running, trail running, triathlon, swimming, strength, walking and hiking, with bike-to-run bricks - Training for a Hyrox: your plan builds the running and strength work the race asks for - Weekly summaries, monthly progress reports and a home-screen widget - Clubs with a shared feed and fair leaderboards FOR COACHES With the Coach Plan, a coach gets a roster sorted by who needs attention, one inbox for approvals and a view of the whole squad. WORKS WITH Apple Health, Apple Watch, Garmin, Wahoo, Polar, Coros, Suunto, Zwift, Whoop and Oura. PRICING 14-day free trial, no credit card required. Pro, €3/month: adaptive workouts, your plan four weeks ahead and 20 Coach+ messages a month. Max, €8/month: everything in Pro, plus eight weeks ahead, 200 Coach+ messages and performance benchmarks. Available in 25 languages. Built and updated every week. Requires a free Intervals.icu account. Terms of Use: https://www.intervalcoach.app/terms Privacy Policy: https://www.intervalcoach.app/privacy

About

Phase

This interval timer adapts to your fitness level, offering personalized workout journeys or allowing you to build custom routines. It provides audio cues and visual guidance, tracks progress without pressure, and saves your training data locally.

Highlights
  • Adaptive workout journeys
  • Customizable interval timers
  • Spoken audio cues
  • Visual transition guidance
  • Progress tracking without streaks
  • Offline workout saving
Read full description

Phase is an interval timer for starting where you are, and not where you think you should be. Coming back to running? Choose a run/walk Journey that gives you something manageable today and only suggests the next step after you finish. Already know your HIIT, Tabata, EMOM, circuit, boxing, swim, or gym workout? Build it your way and let Phase handle the clockwork. # START AT A LEVEL YOU CAN HANDLE Your First Mile begins with one-minute runs and 90-second walks. After each completed session, tell Phase how it felt. If the opening session is too hard, Phase can offer something gentler, down to 15-second runs. If it feels right, stay with it. If you’re ready for more, Phase can offer one small step forward. You decide whether the plan changes. You can also work toward a continuous 5K or 10K. Journeys move by completed sessions and your feedback—not calendar weeks—so missing Tuesday doesn’t put you behind. # LET PHASE CALL THE WORKOUT Keep your hands free and your phone in your pocket. Spoken phase cues and countdowns guide the workout, including while the phone is locked, and can mix with music already playing. On screen, color and a clear “Next” preview make each transition easy to follow. Vibration adds another cue when it’s available. A call or a trip to the background won’t make the timer quietly drift. When you return, Phase checks the clock and catches up honestly. # BRING YOUR OWN WORKOUT Make a simple work/rest timer in a few taps, or add a warm-up, cool-down, repeats, and individual times and names for every round. Save a favorite once; run it again. Or start with 28 ready-made workouts for HIIT, Tabata, EMOM, circuits, boxing, running, stretching, and swimming—plus three guided running Journeys. # SEE PROGRESS WITHOUT LOSING A STREAK Phase keeps the time, distance, active days, and completed workouts you earned. There are no streaks to lose, because a rough week can’t erase work that already happened. Favorites and Collections organize your routines. History records each session. Journey Milestones preserve evidence-backed changes when completed workouts show a meaningful change. Stop early? Phase saves the time you actually trained without calling the workout complete. # THE CATCH, PLAINLY Your first 14 completed workouts are free. No card. No deadline. No automatic charge. No account. After that, Phase Unlock removes the workout limit and includes all 28 ready-made workouts, all three Journeys, unlimited custom workouts, and the current customization features for one payment. There is no subscription or recurring charge, and Phase has no ads, analytics, or “pro” tier. Your workouts, settings, Journey progress, Milestones, and history live on your phone. Export a backup whenever you want. GPS is optional for ordinary workouts. Final distance workouts in the running Journeys need it because distance is the finish line. When GPS is on, Phase calculates distance on your device, including while the phone is locked. It saves the total, not a route, and doesn’t send your location to us. Start where you are. We’ll handle the clockwork.

Screenshots

IntervalCoach4 screens
Phase4 screens

Verdict

The call

The clearest difference is ratings volume: IntervalCoach at 16 against Phase's 1. IntervalCoach also leads on device support (4 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. IntervalCoach sells 4 in-app purchases, starting at $2.99 per month and Phase sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for IntervalCoach against 5.0 for Phase. That said, the two scores are not equally well evidenced: IntervalCoach has 16 ratings behind it against 1, so its average is the more settled of the two.

Scorecard2 real differences · 8 level
IntervalCoach versus Phase: the parameters behind the verdict, then further details
ParameterIntervalCoachPhase
PriceFreeFree
Rating4.9 (16 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings16 — better1
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size37 MB53 MB
Age rating4+4+
DeveloperMartijn RusschenZHUYE DENG

In-app purchases

4 purchases

IntervalCoach

Subscriptions4
  • Pro Monthly$2.991 Month
  • Max Monthly$6.991 Month
  • Pro Yearly$24.991 Year
Show 1 more
  • Max Yearly$69.991 Year
1 purchases

Phase

One-time1
  • Phase Lifetime$8.99

Questions

Is IntervalCoach free?
IntervalCoach is free to download, with in-app purchases available.
Is Phase free?
Phase is free to download, with in-app purchases available.
Which has better reviews, IntervalCoach or Phase?
Phase is rated higher. IntervalCoach averages 4.9 out of 5 from 16 ratings, while Phase averages 5.0 from 1 ratings.
Do IntervalCoach or Phase have ads?
Neither IntervalCoach nor Phase shows ads.

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