Comparison

The Running Algorithm vs Sympathetic

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

Head to head
About

The Running Algorithm

Features
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The Running Algorithm is your personal running coach in your pocket. Tell us when you're available and we'll handle everything else. All you need to do is run. Most training plans break the moment real life gets in the way. A late meeting, a rough night's sleep, a missed session, and suddenly you're behind and trying to cram. The Running Algorithm works differently. It builds a fully flexible plan around your schedule, then adapts automatically as your week, and your body, changes. ADAPTIVE TRAINING THAT FITS YOUR LIFE Plans are built around the days and times you can actually run. If your plans change, your plan changes with them. No more falling behind, no more guesswork about.how to adjust your training, we handle it for you. TRAIN FOR ANY DISTANCE Whether you're chasing your first 5K, a 10K personal best, a half marathon, or your first full marathon, The Running Algorithm builds the right plan for your goal. Add as many events as you like and we'll plan the training around all of them. No need to cancel and restart plans between events, we remember what you’ve done and use that to build toward your next goal when one finishes. FEEDBACK THAT SHAPES YOUR PLAN After every run, you tell us how it went. The platform uses that feedback to track your freshness and fatigue, then adjusts upcoming sessions so your training always matches how you're feeling and how much time you have. SMART, INJURY-AWARE PROGRESSION Our fatigue model is designed to keep your training sustainable. By balancing hard and easy days intelligently, we help you avoid the back-to-back hard sessions that lead to burnout and injury. This means that you can stay consistent and improve faster. BUILT BY RUNNERS, COACHES AND DATA SCIENTISTS We combine cutting-edge machine learning with custom sessions designed by world-leading experts. The result is a plan that's both scientifically grounded and genuinely personal to you. WHY RUNNERS LOVE IT - Plans that flex around work, family and life - Automatic adjustments when your schedule or energy shifts - A clear session waiting for you every time you open the app - Run analysis and fatigue tracking to monitor your progress - Custom expert-built sessions across our five training zones - Support for 5K, 10K, half marathon and marathon goals HOW IT WORKS 1. Plan β€” Add your events and tell us your availability. 2. Train β€” Follow a plan built around your real schedule. 3. Feedback β€” Rate each run so we know how you're progressing. 4. Adapt β€” Your plan updates based on your feedback and your week. 5. Improve β€” Train consistently and optimally to get faster. Optimised training leads to the fastest improvements. Runners using The Running Algorithm stay more consistent and get faster as a result. Stop wrestling with rigid plans that don't understand your life. Let The Running Algorithm handle the planning so you can focus on the running. A subscription gives you full access to The Running Algorithm for Β£9.99 per month. Start your free trial today and run smarter, safer, and faster. No need for payment details until you’re sure you love it. Terms: https://app.therunningalgorithm.com/policies/terms-and-conditions Privacy: https://app.therunningalgorithm.com/policies/privacy

About

Sympathetic

Read full description

Find your pace. Explore your heart's response. Sympathetic brings guided breathing and personal physiology together on your iPhone. Follow a visual breathing guide with optional sound and haptic cues, choose a comfortable pace, and build a regular practice. BREATHE AT YOUR PACE Guided breathing is free and works without a chest strap. Choose your breathing rate, inhale/exhale balance and session length. Use Focus mode to keep the guide in view. EXPLORE WITH POLAR H10 A Sympathetic H10 subscription unlocks Polar H10 connections, heart-rate and HRV feedback, breathing assessments, adaptive feedback and ECG recording. Review your response during training, browse saved waveforms and export recordings for your own analysis. A Polar H10 is required for these features and is sold separately. SUBSCRIPTION OPTIONS Choose an annual or monthly plan. The annual plan offers a lower cost than twelve monthly payments. Eligible new subscribers receive a two-week free trial, followed by automatic renewal at the price shown when subscribing unless cancelled. Manage or cancel your subscription in your Apple Account settings. Restore Purchases is available in the app. Previously saved records remain readable and exportable after a subscription ends. KEEP YOUR PRACTICE PRIVATE Your recordings and analysis stay on your iPhone unless you choose to export them. No app account, advertising or analytics. Apple processes subscription purchases. Optionally save confirmed breathing time to Apple Health as Mindful Minutes. Sympathetic is an independent app and is not affiliated with Polar. It is for personal exploration and general wellness. Its scores, breathing estimates, ECG observations and single-lead measurements are experimental and are not intended for diagnosis, treatment or medical decisions. Privacy: https://www.lucascamillomd.com/sympathetic/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

The Running Algorithm4 screens
Sympathetic4 screens

Verdict

The call

The clearest difference is in-app purchases: The Running Algorithm at none against Sympathetic's 2. Sympathetic's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Sympathetic sells 2 in-app purchases, starting at $3.00 per month. The Running Algorithm asks for nothing beyond the download.

UpkeepUpdate frequency

The Running Algorithm ships an update every 3 weeks, Sympathetic every 3 days. The most recent releases landed on October 8, 2026 and October 29, 2026 respectively.

Scorecard2 real differences Β· 4 level
The Running Algorithm versus Sympathetic: the parameters behind the verdict, then further details
ParameterThe Running AlgorithmSympathetic
PriceFreeFree
Update frequencyEvery 3 weeksEvery 3 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS18.618.0 β€” better
Further details β€” not scored
Size5 MB10 MB
Age rating4+12+
DeveloperTRA Technologies LimitedLucas Paulo de Lima Camillo

In-app purchases

None

The Running Algorithm

No in-app purchases

2 purchases

Sympathetic

Subscriptions2
  • H10 monthly14 Days trial$3.001 Month
  • H10 annual14 Days trial$20.001 Year

Questions

Is The Running Algorithm free?
The Running Algorithm is free to download, with no in-app purchases.
Is Sympathetic free?
Sympathetic is free to download, with in-app purchases available.
Do The Running Algorithm or Sympathetic have ads?
Neither The Running Algorithm nor Sympathetic shows ads.
Which is updated more often, The Running Algorithm or Sympathetic?
The Running Algorithm ships an update every 3 weeks, and Sympathetic every 3 days. Most recently, The Running Algorithm was updated on October 8, 2026 and Sympathetic on October 29, 2026.

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