Comparison

Spark DietTracker vs HardCORE Fit

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

Head to head
About

Spark DietTracker

Easily track your diet, including Keto, Paleo, and Low-Carb plans. This app automatically reads ketone and pH test strips, providing immediate and accurate results. Monitor your weight, mood, and macronutrients with weekly summaries and recipe recommendations.

Highlights
  • Automatic ketone and pH test strip reading
  • Diet tracking (Keto, Paleo, Low-Carb)
  • Weight and mood tracking
  • Macronutrient monitoring (calories, net carbs, protein)
  • Recipe and supplement recommendations
  • Weekly diet summaries
Features
Read full description

Spark DietTracker app provides a new and simple way to keep track of your diet (Keto, Paleo, Low-Carb, Atkins or Alkaline). The app integrates automatic test strips reading of the Spark Diagnostics’s Ketone Test Strips (Ux-1k) and Ketone/pH Test Strips (Ux-2ka) products. It seamlessly integrates the Spark Diagnostics test products to measure ketones or pH of Urine to record and track the effectiveness of the diet. The urine ketone test strip reader included in app automatically reads the test strip from the image of the test strips and delivers hassle-free, immediate, and accurate results in your phone screen without having to interpret the complex visual color chart. Note: App requires the use of Spark Diagnostics products. Further, also track your weekly summary of the key diet parameters for you such as calories, net carbs, and protein for users to keep informed and adjust your diet plan accordingly. You can record and track your weight and mood too! APP FEATURES: FAST, FREE, AND CONVENIENT FREE SMARTPHONE MOBILE APP READING of KETONE TEST STRIPS for Ketosis – automatically reads the test strip and delivers hassle-free, immediate, and accurate results in your phone screen without having to interpret a complex visual color chart. RECORD/TRACK YOUR DIET GOALS AND MONITOR YOUR MACROs - The App keep tracks all the key parameters including your Urine Ketone, Urine pH, weight, calories, and even your mood! It shows daily trends that help to improve consistency in maintaining your Diet goals and weight. I RECOMMENDATION ON RECIPES and SUPPLEMENTS: get a recommendation on Recipes and Supplements that can help to stay on track with your diet. Note: Instructions on the product package take precedence over the recommendations made by the app. In the event of unexpected or questionable results by App follow instructions from product package inserts.

About

HardCORE Fit

Features
Read full description

Hard 'CORE' Fitness, by Lisa Hansen, is not your ordinary fitness program.  Our workouts focus on CORE strength and FUNCTION - the "powerhouse" of our body. Learn how to engage your muscles effectively, how to move in a way that suits YOUR mobility, fitness level and physical limitations (such as pelvic floor dysfunction or back/hip pain, sore knees or sore wrists!).... so that you not only avoid injuries but feel maximum benefits from your workouts. The Ultimate CORE FOCUSED TRAINING to Change Your Life! Choose from a variety of training - from pilates/stretching to bootcamp, pregnancy fitness, postpartum core recovery and total beginner programs.  From pregnancy through to your postpartum recovery and beyond. SAFE and EFFECTIVE training that is suitable for the common issues faced by mums - pelvic floor dysfunction, ab separation, back/hip pain, sore wrists and knees.  PREGNANCY Workouts: * Suitable for ALL trimesters and all fitness levels. 
 * Entirely low impact.
 * The perfect mix of pelvic floor work, pelvic stability work (hips) and chest opening/back strengthening work.
 * Suitable for pelvic floor dysfunction and diastasis recti.
 POSTPARTUM CORE RECOVERY Workouts: * Suitable for ALL stages of postpartum recovery (no matter how old your kids are!).
 * In depth pelvic floor work, lower abs and butt muscles. 
 * Suitable for Pelvic floor dysfunction and diastasis recti (ab separation).
 * Strengthen hips and knees and reduce/alleviate back/hip pain.
 POSTPARTUM FITNESS and MENOPAUSE Workouts: * Suitable for ALL fitness levels. 
 * PILATES/STRETCH and Full Body Fitness Workouts.
 * Entirely low impact (NO jumping/running/bouncing).
 * The perfect mix of pelvic floor work, hip/knee/ankle stability work and chest opening/back strengthening work.
 * Suitable for pelvic floor dysfunction, core weakness and hip/back pain. 
 TOTAL BEGINNER Workouts: * Starting with just 5 minute workouts and slowly building up to 20 minute workouts by week 5! 
 * Suitable for ALL fitness levels, including total beginners. This is a great way to ease back in to workouts after an injury/illness, after a baby, or the perfect place to START if you haven't exercised in years (or ever!!!).
 * A focus on technique so you can workout safely, prevent injuries and get maximum results. ALL LOW IMPACT (no jumping).
 * Learn how to ACTIVATE your core effectively - including butt muscles and lower abs.
 PLUS much more including CHALLENGES, MINDSET COURSES and INTENSE SHORT Workouts! Regain your spark and lust for fitness!
 No more exacerbating or causing ISSUES or INJURIES!  Create a STRONG, FUNCTIONING CORE and feel your best yet! INFORMATION ABOUT THE APP AND PURCHASE OPTIONS By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync. The download of HardCORE Fit is free of charge. Should you use HardCORE Fit to access in-app content via available subscription(s), a payment will be charged to your credit card after the trial period ends and when a subscription renews. A subscription renews automatically unless canceled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Subscription(s) can be managed and auto-renewal turned off in Account Settings in the App Store after purchase. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy

Screenshots

Spark DietTracker4 screens
HardCORE Fit3 screens

Verdict

The call

The clearest difference is in-app purchases: Spark DietTracker at none against HardCORE Fit's 8. Spark DietTracker also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement 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. HardCORE Fit sells 7 in-app purchases, starting at $3.95 per month. Spark DietTracker asks for nothing beyond the download.

UpkeepUpdate frequency

Spark DietTracker ships an update monthly, HardCORE Fit every 4 weeks. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
Spark DietTracker versus HardCORE Fit: the parameters behind the verdict, then further details
ParameterSpark DietTrackerHardCORE Fit
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews16.7% of reviews—
Number of ratings2 — better—
Update frequencyMonthlyEvery 4 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size52 MB65 MB
Age rating12+4+
DeveloperSPARK DIAGNOSTICS, LLCLisa Hansen

In-app purchases

None

Spark DietTracker

No in-app purchases

7 purchases

HardCORE Fit

Subscriptions7
  • Monthly Subscription$3.951 Month
  • Monthly Subscription2 variants$5.951 Month
  • Monthly Subscription7 Days trial$12.951 Month
Show 4 more
  • Beginners Workouts!$20.001 Month
  • 7 min Workouts7 Days trial$20.001 Month
  • Core Recovery$25.001 Month
  • Pregnancy Fitness$30.001 Month

Questions

Is Spark DietTracker free?
Spark DietTracker is free to download, with no in-app purchases.
Is HardCORE Fit free?
HardCORE Fit is free to download, with in-app purchases available.
Do Spark DietTracker or HardCORE Fit have ads?
HardCORE Fit shows ads; Spark DietTracker does not.
Which is updated more often, Spark DietTracker or HardCORE Fit?
Spark DietTracker ships an update monthly, and HardCORE Fit every 4 weeks. Most recently, Spark DietTracker was updated on October 12, 2026 and HardCORE Fit on October 9, 2026.

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