Comparison

Pacr vs The Running Algorithm

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

Head to head
About

Pacr

Features
Read full description

Your running app should listen to your body. Pacr gives you a personalized training plan one week at a time, while keeping your long-term goals in view. Each new week draws on your running history, fitness, fatigue and targets, adapting as your body and training needs change. Whether you’re working toward your first 5K, chasing a faster 10K or preparing for a marathon, Pacr helps you make each run count. β€’ Get a fresh week of suggested runs shaped by your training. β€’ See distances in miles and follow sessions with pace, heart rate or RPE targets. β€’ Build your own intervals, fartleks, ladders and more. β€’ Receive live guidance during your runs. β€’ Connect supported wearables and track your progress. Pacr is built for coaches too. Host your athletes, plan their sessions and review their runs on web or mobile. Message them in the app and keep their training together in one place.

About

The Running Algorithm

Features
Read full description

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

Screenshots

Pacr4 screens
The Running Algorithm4 screens

Verdict

The call

The clearest difference is in-app purchases: The Running Algorithm at none against Pacr's 3. Pacr's advantage is update cadence (every 2 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. Pacr sells 3 in-app purchases, starting at $16.99 per month. The Running Algorithm asks for nothing beyond the download.

UpkeepUpdate frequency

Pacr ships an update every 2 days, The Running Algorithm every 3 weeks. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

Scorecard2 real differences Β· 4 level
Pacr versus The Running Algorithm: the parameters behind the verdict, then further details
ParameterPacrThe Running Algorithm
PriceFreeFree
Update frequencyEvery 2 days β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 β€” better18.6
Further details β€” not scored
Size38 MB5 MB
Age rating4+4+
DeveloperPACR LTD.TRA Technologies Limited

In-app purchases

3 purchases

Pacr

Subscriptions3
  • Self-Coached Pro14 Days trial$16.991 Month
  • Coach Starter$29.991 Month
  • Coach Pro$99.991 Month
None

The Running Algorithm

No in-app purchases

Questions

Is Pacr free?
Pacr is free to download, with in-app purchases available.
Is The Running Algorithm free?
The Running Algorithm is free to download, with no in-app purchases.
Do Pacr or The Running Algorithm have ads?
Neither Pacr nor The Running Algorithm shows ads.
Which is updated more often, Pacr or The Running Algorithm?
Pacr ships an update every 2 days, and The Running Algorithm every 3 weeks. Most recently, Pacr was updated on October 26, 2026 and The Running Algorithm on October 31, 2026.

Other comparisons