Comparison

Engine vs CoachSLY

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

Head to head
About

Engine

Features
Read full description

Train Smarter. Run Stronger. Engine is a running companion built to help you boost your VOβ‚‚ max and unlock real endurance gains β€” without guesswork. Through personalized training plans and guided runs, Engine gives you the right workout at the right time, so every session actually moves your fitness forward. Designed for runners who want measurable progress, not random mileage, Engine turns every run into a step toward higher performance and stronger confidence. Features You’ll Love: - VOβ‚‚ Max Running Plans: Get personalized running plans designed specifically to improve your VOβ‚‚ max, endurance, and efficiency. - Guided Run Player: Hit start and let Engine guide your session β€” pace cues, structure, and automatic tracking included. - Clear Performance Insights: Visualize your VOβ‚‚ max, endurance, and consistency with clean stats and easy-to-read trends. - Train With Confidence: Know why you’re running each workout β€” and how it’s pushing your fitness higher. Turn Every Run Into Progress. Each workout has a purpose. No junk miles, no overthinking. Download Engine and watch your fitness rise. Run focused. Build power. Go further. A subscription is required to access the full app experience and features. Terms of Use: https://legal.rocapine.com/terms Privacy policy: https://legal.rocapine.com/privacy

About

CoachSLY

Features
Read full description

CoachSLY is your AI fitness coach for structured, personalized workout programming. Built for real-life athletes, CoachSLY helps you train with purpose by generating complete daily workouts based on your fitness level, available equipment, training focus, and personal constraints. Whether you train for CrossFit, HYROX-style conditioning, strength, endurance, or general functional fitness, CoachSLY gives you clear sessions without the guesswork. What CoachSLY helps you do: β€’ Generate structured daily workouts β€’ Train with your available equipment β€’ Choose your workout focus β€’ Add personal training constraints β€’ Save personal records for better load guidance β€’ Adjust workouts when life gets in the way β€’ Track your progress with smarter feedback β€’ Build consistency without overthinking CoachSLY is not a random workout generator. It is built around structured progression, practical scaling, and real-life training decisions. For athletes who want direction, structure, and momentum. Just Keep Moving. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Engine4 screens
CoachSLY4 screens

Verdict

The call

Engine and CoachSLY are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Engine sells 2 in-app purchases, starting at $9.99 per month and CoachSLY sells 1 in-app purchase, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.

ScorecardNo meaningful differences
Engine versus CoachSLY: the parameters behind the verdict, then further details
ParameterEngineCoachSLY
PriceFreeFree
Update frequencyEvery 10 daysEvery 10 days
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 β€” better16.6
Further details β€” not scored
Size54 MB40 MB
Age rating4+4+
DeveloperLes NantsRaphael Mushailov

In-app purchases

2 purchases

Engine

Subscriptions2
  • Monthly Plan$9.991 Month
  • Yearly Plan7 Days trial$39.991 Year
1 purchases

CoachSLY

Subscriptions1
  • CoachSLY Pro$7.991 Month

Questions

Is Engine free?
Engine is free to download, with in-app purchases available.
Is CoachSLY free?
CoachSLY is free to download, with in-app purchases available.
Do Engine or CoachSLY have ads?
Both Engine and CoachSLY show ads.
Which is updated more often, Engine or CoachSLY?
Engine ships an update every 10 days, and CoachSLY every 10 days. Most recently, Engine was updated on September 30, 2026 and CoachSLY on October 5, 2026.

Other comparisons