SkyPacer vs JustRow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SkyPacer
This app helps runners and coaches optimize training and race performance. It offers precise pace calculations, VO2max measurement, and detailed race and nutrition planning. Analyze routes, predict times, and track fitness development with a user-friendly interface.
- Precise pace calculations
- VO2max and performance analysis
- GPX route analysis
- Professional race planning
- Smart nutrition planning
- Export to Excel/Sheets
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SkyPacer – Your Ultimate Running Pace Calculator and Training Companion Revolutionize your running training with SkyPacer, the most advanced pace calculator app for runners, coaches, and running enthusiasts. From your first 5K to marathon goals – SkyPacer delivers the precision you need. Brand New Features! * VO2max calculation with Cooper test – Measure your endurance scientifically * Advanced race planning – Plan every detail of your race * Smart nutrition planning per course segment * Individual notes for every split * Export splits, nutrition notes, and notes to Excel/Sheets * Complete UI/UX redesign for intuitive operation Core Features **Precise Pace Calculations * Calculate pace from distance, time, or speed instantly * Seamless conversion between kilometers and miles * Perfect for race preparation and training **NEW: VO2max and Performance Analysis * Determine your maximum oxygen uptake with the proven Cooper test * Get scientifically-based insights into your endurance performance * Track your fitness development over time **GPX Route Analysis and Strategic Planning * Upload your favorite routes and race courses * Analyze elevation profiles and terrain challenges * Plan strategic splits based on course topology * Optimize your energy distribution across the entire route **Professional Race Planning * Detailed race strategy development * Consider course characteristics and personal goals * Export function for coaches and support teams * Perfect preparation for the big day **Smart Nutrition Planning * Personalized nutrition recommendations for each course segment * Plan hydration and energy intake based on split duration and intensity * Individual note system for race day reminders * Export all plans to share with your team **Performance Analysis * Race time predictions across various distances * Personalized training zone recommendations * Pace optimization for different training goals **Modern User Interface * Completely redesigned for maximum user-friendliness * Intuitive navigation through all functions * Optimized for quick inputs during training **For Every Runner * Runners: Train with scientific precision * Coaches: Develop detailed training plans * Spectators: Track and predict runner performance **Train Like a Pro SkyPacer goes beyond simple calculations. Determine your VO2max, upload your course, visualize every hill, plan your splits strategically, and fuel your body optimally with smart nutrition planning. Example: Sub-3:00 marathon? Hold 6:52/mile pace. SkyPacer shows you exactly how to run each segment, when to fuel, what to expect at every mile – and measures your fitness with precise VO2max testing. Download SkyPacer and unleash your running potential!
JustRow
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Every stroke, in focus. Pair your Concept2 RowErg and row. Your workout is written to your phone first and integrates with Apple Health, your Concept2 logbook and iCloud. WHILE YOU ROW • Focus, or all the data — two views, a tap apart • Your split, big enough to read mid-stroke; rate, watts, distance and time a glance away • A target pace you set, with the split turning orange the moment you drop behind it • Workout to a fixed distance or time • Live heart rate from your Apple Watch BEFORE YOU START • Send a distance or time workout straight to the monitor, splits and all • Pairs over Bluetooth and reconnects on its own WHEN YOU STOP • Splits, a pace chart and a stroke profile for every piece you’ve rowed • Written to Apple Health • Shared to your Concept2 logbook • Synced to your own iCloud, so a new phone starts with your history already on it ON YOUR WRIST • Heart rate on the watch while you row PRIVATE No adverts. JustRow has no server of its own: your rowing lives on your phone and in your own iCloud, and reaches Concept2 only when you sign in and ask it to. Requires a Concept2 RowErg with a PM5 monitor. An Apple Watch is optional, and used only for heart rate. Concept2 and RowErg are trademarks of Concept2, Inc. JustRow is an independent app, not affiliated with or endorsed by Concept2.
Screenshots
Verdict
The clearest difference is update cadence: JustRow at every 5 days against SkyPacer's every 6 weeks. SkyPacer's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SkyPacer ships an update every 6 weeks, JustRow every 5 days. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.
| Parameter | SkyPacer | JustRow |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 6 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Andre Voltmann | Stephen Marsh |
In-app purchases
SkyPacer
No in-app purchases
JustRow
No in-app purchases









