Comparison

Stark Resistance Band vs EmberRun Calc

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

Head to head
About

Stark Resistance Band

This app provides a comprehensive guide to resistance band exercises with HD video demonstrations. Create custom workouts, track progress, and challenge yourself with various training timers. Integrate with Apple Health to log your fitness data.

Highlights
  • 23 HD video exercises
  • Custom workout creation
  • Full body workouts
  • Step-by-step workout guidance
  • Tabata, HIIT, Circuit timers
  • Progress tracking and rewards
  • Muscle group targeting
  • Apple Health integration
Features
Read full description

Optimise your results with Stark Resistance Band! - Be inspired by 23 exercises presented in sharp HD video. - Create your own personal workout. - Get a full body workout with exercises in all ranges of difficulty - While working out, follow the step by step workout-feature which take you through the workout using timers and your chosen specifics. - The timers support different workout types including Tabata, HIIT and Circuit training. - Challenge yourself, get rewards and keep track of your score. - Find exercises targeting specific muscle groups. Integration with Apple Health: Save burned calories and performed workouts. Exercises are performed by the professional instructor, Jenny Ahlin.

About

EmberRun Calc

This app helps runners plan their training, predict race times, and log their progress. It offers quick calculations for pace, distance, and time, with options to save results and customize the interface. Unlock advanced features like race time predictions and iCloud backup with a one-time purchase.

Highlights
  • Pace, time, and distance calculations
  • Automatic unit conversions
  • Save and backup race results
  • Accurate race time predictions
  • Customizable themes and controls
  • Age grading percentages
Features
Read full description

EmberRun Calc: Plan, Predict & Improve Your Runs Whether you are training for a first 5K or working toward a marathon PR, EmberRun Calc helps you calculate pace, predict finish times, and track your running progress. No ads. Pace, Time & Distance Calculations - Calculate pace, time, or distance - Use miles, kilometers, mph, or km/h - Convert units for training and races - Share results from the Calculator or Saved Results Save & Track Results Available with an in-app purchase. - Save race results, training runs, and predictions - Filter saved runs to view personal records - View age-grade percentages with results - Back up runs, predictions, and settings to iCloud Drive - Restore your data on another device Race Time Predictions Available with an in-app purchase. - Estimate finish times for any distance - Use Riegel’s formula with a known performance - Adjust predictions for your own running profile - Browse predictions in a dedicated tab Themes & Controls Available with an in-app purchase. - Choose Aurora, Daybreak, Horizon, and other themes - Customize race colors - Set pace, time, and distance increments Plan your next run with EmberRun Calc.

Screenshots

Stark Resistance Band4 screens
EmberRun Calc4 screens

Verdict

The call

The clearest difference is price: EmberRun Calc at Free against Stark Resistance Band's $2.99. EmberRun Calc also leads on rating (5.0 vs 4.4) and review sentiment (100% vs 61%). Stark Resistance Band's advantage is in-app purchases (none vs 8) and ratings volume (216 vs 2). On ads 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

EmberRun Calc is free to download; Stark Resistance Band costs $2.99 up front. EmberRun Calc sells 8 one-off in-app purchases. Stark Resistance Band asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EmberRun Calc holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Stark Resistance Band has 216 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 61% of Stark Resistance Band's written reviews are positive against 100% of EmberRun Calc's.

UpkeepUpdate frequency

Stark Resistance Band ships an update every 2 months, EmberRun Calc every 7 months. The most recent releases landed on October 23, 2026 and October 19, 2026 respectively.

Scorecard10 real differences · 1 level
Stark Resistance Band versus EmberRun Calc: the parameters behind the verdict, then further details
ParameterStark Resistance BandEmberRun Calc
Price$2.99Free — better
Rating4.4 (216 ratings)5.0 (2 ratings) — better
Positive reviews61.3% of reviews100.0% of reviews — better
Number of ratings216 — better2
Update frequencyEvery 2 months — betterEvery 7 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#57 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better26.6
Further details — not scored
Size57 MB10 MB
Age rating4+4+
DeveloperPostra ABBrian White

Customer experience

Stark Resistance Band

All ratings216 ratings
Positive84.7%
Neutral3.7%
Negative11.6%
Written reviews93 reviews
Positive61.3%
Neutral8.6%
Negative30.1%

EmberRun Calc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Stark Resistance Band

Reported bugs

6 issues
  • App crashes when building or starting workouts
  • Unable to create or edit customized workouts
  • Exercise override issue when adding multiple exercises
  • Audio/sound not functioning properly on some devices
  • Video content inaccessible despite being advertised
Show 1 more
  • App not updated in years with outdated content

Requested features

12 requests
  • More exercises across all body parts, especially lower body
  • Pre-built workout programs organized by week or month
  • Ability to add custom exercises
  • Calories burned tracking and display
  • Music integration during workouts
Show 7 more
  • Downloadable or advanced workout options
  • Muscle group categorization and filtering
  • Ability to reorder exercises in custom workouts
  • Side-switch feature for bilateral exercises
  • Customizable audio cues and feedback
  • Combination/integration of multiple app features
  • Screen to record band colors used per exercise

EmberRun Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Stark Resistance Band

No in-app purchases

8 purchases

EmberRun Calc

One-time8
  • Race Predictions$0.99
  • Color Themes$0.99
  • Small Tip$0.99
Show 5 more
  • Save Results$2.99
  • Medium Tip$2.99
  • Product Launch Bundle$3.99
  • Large Tip$4.99
  • Extra Large Tip$9.99

Questions

Is Stark Resistance Band free?
Stark Resistance Band costs $2.99, with no in-app purchases.
Is EmberRun Calc free?
EmberRun Calc is free to download, with in-app purchases available.
Which has better reviews, Stark Resistance Band or EmberRun Calc?
EmberRun Calc is rated higher. Stark Resistance Band averages 4.4 out of 5 from 216 ratings, while EmberRun Calc averages 5.0 from 2 ratings.
Do Stark Resistance Band or EmberRun Calc have ads?
Neither Stark Resistance Band nor EmberRun Calc shows ads.
Which is updated more often, Stark Resistance Band or EmberRun Calc?
Stark Resistance Band ships an update every 2 months, and EmberRun Calc every 7 months. Most recently, Stark Resistance Band was updated on October 23, 2026 and EmberRun Calc on October 19, 2026.

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