Comparison

Just Run vs ErgForge

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

Head to head
About

Just Run

This app guides you from a beginner runner to completing a 5K in 9 weeks with a structured workout plan. It also offers a 6-week plan to progress from 5K to 10K. Enjoy ad-free workouts with customizable trainer voices and background operation.

Highlights
  • Zero to 5K training plan
  • 5K to 10K training plan
  • Customizable trainer voices
  • Background operation
  • Music/podcast integration
  • No ads
Features
Read full description

Just Run is a simple workout app to help you get running. I made this app to get myself off the couch and start running to get to 5K. Stick to the workout plan, and you'll be able to run 5K in 9 weeks. It really does work! If you're already able to run 5K, Just Run also has a 6-week plan to help you get up to 10K! WORKOUT PLANS: - Zero to 5K: Gets you from absolute zero running experience to 5K in just 9 weeks, with three 30-minute workouts per week - 5K to 10K: If you can already run 5K, or have finished Zero to 5K, this plan gets you to 10K in only 6 weeks FEATURES: - Target dates for each workout, calculated based on your progress, and optimal exercise days - Choose from multiple trainer voices, which tell you exactly when to run and walk - No ads! Ads are no fun, so Just Run has no ads! - Works with music, audiobook and podcast apps - Just Run will briefly lower the volume of the other app when prompting you to run and walk, so you'll never miss a prompt - Runs in the background. Turn off your screen, or switch to another app, and you'll still hear the run and walk prompts - Upgrade to Premium to get more trainer voices, multiple theme options, and to support continued development of Just Run I'd love to hear how you're getting on with Just Run. You can email me at run@jupli.com.

About

ErgForge

Features
Read full description

ErgForge makes indoor cycling quick, simple and accessible without elaborate 3D virtual worlds or the need for powerful hardware. Connect your compatible Bluetooth smart trainer, choose a workout or route, and start riding. ErgForge focuses on the essentials: responsive trainer control, clear live metrics and practical tools that help you train with purpose. ErgForge works with consumer indoor cycling trainers and fitness heart-rate straps. These are exercise accessories, not medical devices. Features include: - Fast, straightforward ride setup - Structured workouts with automatic ERG resistance control - Live power, cadence, speed and fitness heart-rate metrics - GPX route riding with maps, gradients and progress tracking - Group rides and live leaderboards - Workout scheduling and multi-week training plans - Ride history, power analysis and performance insights - Automatic FTP suggestions based on recent efforts - Optional Strava uploads for completed rides - Support for compatible Bluetooth smart trainers and consumer fitness heart-rate monitors Whether you're following a training plan, riding a favourite route or joining friends, ErgForge gets the technology out of the way so you can spend more time riding. SUBSCRIPTION ErgForge Pro unlocks the full app. A free account keeps working without one. - ErgForge Pro Monthly — £4.99 per month Prices are shown in GBP and vary by region; your local price is always shown in the app before you buy. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically at the same price unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel it any time in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ErgForge Terms of Service: https://ergforge.com/terms Privacy Policy: https://ergforge.com/privacy ErgForge is a fitness training app and is not a medical device. It does not diagnose, treat, or prevent any condition. Consult a physician before beginning any exercise program and before making medical decisions.

Screenshots

Just Run4 screens
ErgForge4 screens

Verdict

The call

The clearest difference is update cadence: ErgForge at every 3 days against Just Run's every 3 weeks. ErgForge also leads on iOS requirement (15.1 vs 18.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Just Run sells 2 one-off in-app purchases and ErgForge sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Just Run ships an update every 3 weeks, ErgForge every 3 days. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
Just Run versus ErgForge: the parameters behind the verdict, then further details
ParameterJust RunErgForge
PriceFreeFree
Rating5.0 (1.3K ratings) — better—
Positive reviews98.9% of reviews—
Number of ratings1.3K — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size9 MB35 MB
Age rating+417+
DeveloperJupliMICHAEL JOHN CHIDLEY

Bugs and requests

Just Run

Reported bugs

2 issues
  • Progress not always saved correctly
  • Occasional app freezing/crashing

Requested features

2 requests
  • Integration with fitness trackers/smartwatches
  • More customization options (e.g. voice selection)

ErgForge

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Just Run

One-time2
  • Premium$3.99
  • Premium + Tip$5.49
1 purchases

ErgForge

Subscriptions1
  • ErgForge Pro Monthly$4.991 Month

Questions

Is Just Run free?
Just Run is free to download, with in-app purchases available.
Is ErgForge free?
ErgForge is free to download, with in-app purchases available.
Do Just Run or ErgForge have ads?
Neither Just Run nor ErgForge shows ads.
Which is updated more often, Just Run or ErgForge?
Just Run ships an update every 3 weeks, and ErgForge every 3 days. Most recently, Just Run was updated on October 24, 2026 and ErgForge on October 11, 2026.

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