Comparison

Tendon Tracker vs StackIQ

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

Head to head
About

Tendon Tracker

Features
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TENDON PAIN THAT WON'T RESPOND TO REST? YOU'RE NOT ALONE — AND REST ISN'T THE ANSWER. Whether tendinopathy or other tendon injuries, research shows complete rest often makes things worse. Tendon Tracker helps you find the right loading balance for real recovery. Built for tendon rehab but informed by the whole kinetic chain, it helps you spot weak links (ankle, hip, core, low back) that affect tendon load. WHY TRACKING MATTERS: Morning stiffness and 24-48h pain response tell you if yesterday's load was appropriate. Track these patterns to know when to push, catch overload early, and make informed decisions. This is the same monitoring used by sports medicine professionals — now in your pocket. SMART GUIDANCE & TRACKING (Free): DAILY RECOMMENDATIONS: Every morning, get a personalized recommendation — Train, Rest, Isometrics Only, or Modify Load — with clear reasoning based on your symptoms. DAILY TRACKING: Morning stiffness & tendon strength Training sessions with intensity, duration & pain levels 24-48h pain response monitoring Recovery actions: sleep, heat, massage, sauna, protein & collagen intake Pain location tagging and session notes AUTOMATIC FLARE-UP DETECTION: If your strength drops, pain spikes, or stiffness jumps, the app detects it and applies graduated load caps (50% → 75% → 90% over 21 days) to protect you during recovery. PROGRESSION FRAMEWORK: Traffic light pain monitoring system 5-phase load management with stimulus optimization Exercise framework: Isometrics → Heavy Slow Resistance → Plyometrics → Sport Custom exercises tailored to your routine DAILY PLANNER & PROGRESS CHARTS: Plan your training day with recommended exercises for your current phase. Track morning stiffness, tendon strength, and sleep trends over time. STAY ON TRACK: Configurable morning, evening, and custom reminders. Set your own motivation anchor — record why recovery matters to you. ADVANCED FEATURES (Premium — one-time purchase): 8-REGION BODY READINESS PROFILE: Full-body assessment across ankle, knee, hamstring, hip/glute, low back, core, shoulder, and elbow — with bilateral and unilateral tests, spider chart visualization, and weakness identification. RETURN-TO-SPORT ASSESSMENT: Combines tendon health, readiness profile, and sport-specific demands into a clear Ready / Caution / Not Ready verdict with action items. TRAINING CALENDAR: Plan your week and log every session as you train — sets with reps, weight (in kg or lb), and built-in rest & hold timers. Set per-exercise goals and track your progress on a per-exercise history chart. Import or export your plan anytime. DEEP-DIVE ANALYTICS: Training Pain Impact Chart, Training Volume Chart, acute vs chronic load ratio tracking, and advanced trend analysis. COMPREHENSIVE GUIDANCE: In-depth biomechanics guidance, activity-level customization (recreational → competitive), and detailed rehabilitation scenarios. Available for all 9 supported tendons. One-time purchase — no subscriptions, lifetime access, all future premium features included. SUPPORTED TENDONS: Achilles • Patellar • Plantar Fascia • Hamstring • Rotator Cuff • Lateral Elbow • Gluteal • General YOUR DATA STAYS YOURS: All data stored locally on your device. Export to CSV anytime. WHO IT'S FOR: Runners, lifters, climbers, tennis players, weekend warriors — anyone dealing with stubborn tendon pain who's tired of guessing and ready for real progress. EVIDENCE-BASED APPROACH: Built on current tendinopathy research including Silbernagel's pain-monitoring model, Cook & Purdam's continuum model, Rio et al. isometric analgesia, and Malliaras progressive loading principles. Available in English and French. READY TO ACTUALLY HEAL? You've tried rest. You've tried random exercises from YouTube. Your app detects flare-ups before they derail you, tells you what to do each morning, and tracks your whole-body readiness for sport. Stop guessing — start recovering.

About

StackIQ

Organize your daily vitamin and supplement intake, identify ingredient overlaps, and understand timing for better health decisions. This tool helps you view your entire supplement stack holistically, not just individual products.

Highlights
  • Track daily vitamins and supplements
  • Build and manage supplement routines
  • Review supplement ingredients
  • Spot overlapping ingredients
  • Catch duplicate dosing
  • AI-powered stack insights
  • Export supplement details
Features
Read full description

StackIQ is a supplement tracker that helps you organize your routine, review ingredients, and better understand your supplement stack. Most people take supplements without a clear way to track what they use each day, spot overlapping nutrients, review dosage patterns, or understand whether timing may be working against them. StackIQ helps you manage your supplements in one place and see your routine more clearly. Whether you take vitamins daily, rotate different supplements, or want a better way to manage your stack, StackIQ helps you stay organized and make more informed decisions. Use StackIQ to: - Track your daily vitamins and supplements - Build and manage your supplement routine - Review supplement ingredients in one place - Spot overlapping ingredients across products - Catch duplicate dosing and stack issues - Review timing considerations for your routine - Organize your supplement schedule more clearly - View AI-powered insights about your stack Why StackIQ: StackIQ is built for people who want more than a simple checklist. Instead of treating each product separately, StackIQ helps you look at your supplement stack as a whole. Great for people who want to: - Keep a consistent vitamin routine - Track supplements more easily - Review ingredients across multiple products - Understand stack overlaps and timing - Make smarter supplement decisions over time - Export their supplement details to share with health care provider or nutrition coach Important: StackIQ is for informational and educational purposes only and is not medical advice. Always consult a qualified healthcare professional before making changes to supplements, vitamins, medications, or your health routine. Privacy Policy: https://getstackiq.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Tendon Tracker4 screens
StackIQ4 screens

Verdict

The call

The clearest difference is price: StackIQ at Free against Tendon Tracker's $1.99. StackIQ also leads on update cadence (every 2 weeks vs every 2 months). Tendon Tracker's advantage is iOS requirement (13.0 vs 15.1). On 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

StackIQ is free to download; Tendon Tracker costs $1.99 up front. Tendon Tracker sells 1 one-off in-app purchase and StackIQ sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Tendon Tracker ships an update every 2 months, StackIQ every 2 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 6 level
Tendon Tracker versus StackIQ: the parameters behind the verdict, then further details
ParameterTendon TrackerStackIQ
Price$1.99Free — better
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size41 MB57 MB
Age rating17+12+
DeveloperInnovation Codotek inc.Axon Technologies, LLC

In-app purchases

1 purchases

Tendon Tracker

One-time1
  • Tendon Tracker Premium$29.99
2 purchases

StackIQ

Subscriptions2
  • StackIQ Pro_Monthly$4.991 Month
  • StackIQ Pro_Yearly$39.991 Year

Questions

Is Tendon Tracker free?
Tendon Tracker costs $1.99, and also offers in-app purchases.
Is StackIQ free?
StackIQ is free to download, with in-app purchases available.
Do Tendon Tracker or StackIQ have ads?
Neither Tendon Tracker nor StackIQ shows ads.
Which is updated more often, Tendon Tracker or StackIQ?
Tendon Tracker ships an update every 2 months, and StackIQ every 2 weeks. Most recently, Tendon Tracker was updated on October 2, 2026 and StackIQ on October 6, 2026.

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