Comparison

2PEAK vs Strength IO

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

Head to head
About

2PEAK

Personalized training plans for endurance athletes in triathlon, cycling, and running. Adapts to your schedule, progress, and goals, ensuring your training moves you forward for race day. Integrates with popular fitness devices.

Highlights
  • Personalized training plans
  • Adaptive workout adjustments
  • Supports triathlon, cycling, running
  • Integrates with Garmin, Strava, Apple Watch
  • Tracks fitness and performance
  • Workout intensity based on zones
Features
Read full description

Train for your next race with a clear plan and the confidence that your training is moving you forward. 2PEAK creates a personalized training plan for triathlon, cycling and running and continuously updates it based on your workouts so you stay on track for race day. Many endurance athletes struggle with the same problem: they train hard but are not sure if their training plan is actually leading to better performance. 2PEAK helps solve that. Your training plan adapts to your schedule, your progress and your goals so you always know the right workout to do next. Whether you are preparing for an Iron-distance triathlon, marathon, Granfondo, cycling race or your first endurance event, 2PEAK helps you train smarter and improve your performance over time. WHY ATHLETES USE 2PEAK Know exactly what to do every day Follow a clear training plan so you always know the right workout and training intensity. Stay on track for race day If you miss a workout or change your schedule, your training plan adjusts so you keep progressing toward your race goal. Train for real endurance events Prepare for triathlon races, cycling events, marathons, Granfondos and other endurance competitions with structured training plans. Training that fits your life Choose when you want to train and how much time you have available. Your training schedule is built around your real weekly routine. Train with the right intensity Workouts use heart rate, pace or power zones so every session has a clear purpose and contributes to improving your endurance. Works with the devices you already use Sync your training with Garmin, Apple Watch, Strava, Polar, Suunto, Wahoo, Coros and many other platforms. Completed workouts are automatically imported into your training plan. Track your fitness and performance See how your endurance, training load and fitness develop over time and understand how your training prepares you for race day. TRAINING FOR TRIATHLON, CYCLING AND RUNNING 2PEAK supports training for many endurance sports and events including: • Triathlon training plans • Ironman-distance triathlon preparation • Marathon and half marathon training • Cycling training plans and Granfondo preparation • Running training plans for 5k, 10k and longer races Whether you are a beginner starting structured endurance training or an experienced athlete preparing for an important race, 2PEAK helps guide your training. Used by endurance athletes worldwide to prepare for races and achieve personal bests. The 2PEAK platform was founded in Switzerland and has been continuously developed since 2003 by a team passionate about endurance sports and training science. 2PEAK offers a free version and a membership with additional premium features. Payment will be charged to your Apple ID at confirmation of purchase. Your subscription will automatically renew unless cancelled at least 24 hours before the end of the current period. You can manage subscriptions in your App Store settings after purchase. https://www.2peak.com/agb/ Privacy: https://en.2peak.com/2peak/data_protection.php

About

Strength IO

This app intelligently adapts your strength training sessions based on your daily recovery signals and logged activities from other apps. It analyzes multiple health metrics to determine optimal workout intensity, preventing overtraining and maximizing gains. Track your progress with detailed athlete profiles and personalized insights.

Highlights
  • Adaptive training based on per-muscle recovery
  • Integrates with Apple Health for activity logging
  • Readiness score from seven health signals
  • Training load analysis (7-day vs. 28-day)
  • Smart weekly volume tracking
  • Comprehensive athlete profile with strength and cardio scores
  • Private by default, on-device coaching
Features
Read full description

Everything in. Your session out. Strength IO reads everything you do: your lifts, the runs, rides and games you log in other apps, and your recovery from Apple Health. Then it builds the strength session your body can handle today, and an AI coach explains why. WHAT IT DOES • Workouts built for your week: every muscle gets the sets it needs, with the right mix of movements. Your main lifts rotate among your favorites, and accessory lifts vary. • Weights anchored to real effort: each lift's weight comes from your own history. Heavy lifts that load your spine keep a rep in reserve, and tired muscles get pulled back. • AI coach: a short daily overview of your vitals, sleep and training, plus a note on your training load, built on Apple Intelligence. • Your whole week counts: logged a run in Strava, a ride on Peloton or a game in Apple Fitness? Strength IO reads it through Apple Health and adjusts today's lifting. No double-logging. • Readiness from five overnight signals: HRV, sleep, sleeping heart rate, breathing rate and wrist temperature, each judged against your own normal and combined into one daily estimate. It shows exactly what's lowering or raising your score. • Training load: your last 7 days against your usual 28, with a clear read on whether you're ramping up too fast, holding steady or backing off. • Records and plateaus: personal records for every lift, and early warning when one stalls. • Ready for iOS 27: heart-rate zones from your Apple Watch, and Siri answers about your readiness and today's workout. • Private by design: the AI coach uses Apple's models only, on your iPhone or on Apple's Private Cloud Compute. Never a third-party AI. BUILT FOR The multi-sport lifter. If you train 3–4 times a week, wear an Apple Watch, and also run, ride or play, Strength IO reads all of it. STRENGTH IO PRO Strength IO starts with a free trial of the full app, nothing held back. After the trial, a monthly or yearly subscription keeps everything unlocked. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings. Terms: https://strengthio.app/terms Privacy: https://strengthio.app/privacy iPhone & Apple Watch. AI coach requires an iPhone that supports Apple Intelligence. Estimates based on your data. Not medical advice.

Screenshots

2PEAK4 screens
Strength IO4 screens

Verdict

The call

The clearest difference is rating: Strength IO at 5.0 against 2PEAK's 3.9. Strength IO also leads on update cadence (every 6 days vs every 2 weeks). 2PEAK's advantage is ratings volume (11 vs 1) and iOS requirement (15.1 vs 26.4). On price, ads, in-app purchases and monetization model 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. 2PEAK sells 10 in-app purchases, starting at $14.99 per month and Strength IO sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Strength IO holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: 2PEAK has 11 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

2PEAK ships an update every 2 weeks, Strength IO every 6 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
2PEAK versus Strength IO: the parameters behind the verdict, then further details
Parameter2PEAKStrength IO
PriceFreeFree
Rating3.9 (11 ratings)5.0 (1 ratings) — better
Positive reviews29.5% of reviews—
Number of ratings11 — better1
Update frequencyEvery 2 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.1 — better26.4
Further details — not scored
Size116 MB27 MB
Age rating4+4+
DeveloperQuevita AGCrimson IO LLC

Customer experience

2PEAK

All ratings11 ratings
Positive72.7%
Neutral0.0%
Negative27.3%
Written reviews44 reviews
Positive29.5%
Neutral4.5%
Negative65.9%

Strength IO

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

2PEAK

Subscriptions8
  • Race PRO Monthly$14.991 Month
  • Race PRO Monthly14 Days trial$19.991 Month
  • Unlimited monthly$25.491 Month
Show 5 more
  • Race monthly$27.491 Month
  • Fit$65.991 Year
  • Race$106.996 Months
  • Unlimited$184.996 Months
  • RACE (1 year)14 Days trial$199.991 Year
One-time2
  • 1 Training Plan Recalculation$2.99
  • Fall-Winter Package$159.99
2 purchases

Strength IO

Subscriptions2
  • Strength IO Pro7 Days trial$9.991 Month
  • Strength IO Pro7 Days trial$59.991 Year

Questions

Is 2PEAK free?
2PEAK is free to download, with in-app purchases available.
Is Strength IO free?
Strength IO is free to download, with in-app purchases available.
Which has better reviews, 2PEAK or Strength IO?
Strength IO is rated higher. 2PEAK averages 3.9 out of 5 from 11 ratings, while Strength IO averages 5.0 from 1 ratings.
Do 2PEAK or Strength IO have ads?
Neither 2PEAK nor Strength IO shows ads.
Which is updated more often, 2PEAK or Strength IO?
2PEAK ships an update every 2 weeks, and Strength IO every 6 days. Most recently, 2PEAK was updated on October 24, 2026 and Strength IO on October 10, 2026.

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