Comparison

The Great Lock In Challenge vs Testosterone Tracker

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

Head to head
About

The Great Lock In Challenge

Features
Read full description

Lock in. Level up. Become the version of you that doesn't quit. The Great Lock In Challenge is the Gen-Z inspired habit app turning TikTok's hottest trend into real-world results. Whether you're chasing better health, mindful mornings, sharper focus, or creative growth - this app gives you the tools to build habits that stick. The app's metadata is missing the following required information: Features You'll Love - Custom Lock In Challenges - Create your own goals tailored to your lifestyle - 90+ Curated Challenges - Fitness, mindfulness, nutrition, productivity, and more - Build Streaks & Earn Aura - Stay motivated and watch your score rise as you crush challenges - Progress Tracker - See your wins over days, weeks, and months - SMART Reminders - Adaptive daily nudges and evening prompts so you never fall behind - Free Mode & Pro Mode - Pick 1 challenge daily for free, or upgrade to Pro for unlimited selections and custom challenges - Leaderboard (Coming Soon) - Compete with friends and peers for ultimate bragging rights Stay Consistent, the Smart Way SMART reminders learn your habits and adjust: - Set daily or weekday reminders - Get gentle evening nudges if you haven't completed your challenge - Snooze, skip, or adjust on the fly - no guilt, just progress Why Lock In? Because habits aren't built overnight - they're built smartly. The Great Lock In Challenge makes it fun, flexible, and social. Start your 3-day free Pro trial today and prove to yourself you can stay locked in. Download now and join the movement. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Testosterone Tracker

Scan food barcodes or ingredient labels to understand their impact on testosterone levels. Track key health pillars and receive personalized daily protocols for men's hormonal health optimization.

Highlights
  • Barcode food scanning
  • AI ingredient label scanner
  • T-Impact Score
  • 7 key health pillars tracking
  • Personalized daily action checklist
  • AI face health analysis
  • HealthKit integration
Read full description

Meet T-Boost Scan: a testosterone optimization app with an AI food scanner that returns a T-Impact Score, calories and macros from a single photo, plus lab-report scanning, an AI coach, and daily protocols built from your real data. Not another generic fitness app. Built for men's testosterone — powered by AI, backed by cited research. SCAN ANYTHING WITH AI Snap a barcode, an ingredient label or your plate. Our AI reads it instantly and delivers a T-Impact Score from -50 (Danger Zone) to +50 (T-Booster), cross-referenced against OpenFoodFacts, USDA and NIH databases. Seed oils, endocrine disruptors, zinc, ashwagandha, magnesium, omega-3s — every compound research links to testosterone gets flagged. CALORIES AND MACROS, WITHOUT THE LOGGING Every scan also estimates calories, protein, carbs and fat, and rolls them into a running daily total on your home screen. No food diary, no weighing, no entries. Scan the plate once and the numbers are there. READ YOUR REAL BLOODWORK Scan any lab report with your camera. Total T, Free T, SHBG, albumin and estradiol are read on-device, reviewed by you, and tracked draw over draw. Compare against men your age, set retest reminders, and export a clean PDF history for your doctor. YOUR T-SCORE, BUILT FROM YOUR REAL DATA Not a generic quiz. Your T-Score pulls from 7 pillars — Sleep, Energy, Workout, Drive, Diet, Recovery, and Appearance — plus live HealthKit data updated daily. See where you stand and what's dragging your number down. Every pillar is source-attributed. AI DAILY PROTOCOL A personalized 5-item plan built around your weakest pillars. Doesn't fit your life? Swap any habit and it adapts. Tracked with streaks and a consistency heatmap. T-BOOST AI COACH Ask anything — nutrition, training, supplements, your protocol, your lab results — and get a direct answer grounded in your actual profile, scan history and panels. AUDIT YOUR SUPPLEMENT STACK Scan every bottle you take. Each gets a verdict — KEEP, REDUNDANT, or RECONSIDER — with the reason: overlapping doses, ingredients doing the same job, or nothing behind them. MONTHLY FACE + BODY SCAN Track visible markers month over month — jawline definition, facial leanness, symmetry — plus body composition and estimated body fat from a physique photo (face optional). Photos stay on your device. EARN XP. CLIMB THE RANKS. Earn XP for protocols, scans and check-ins, and rise from Recruit to Immortal. Ranks reward consistency. Share your T-Score card with friends. WEIGHT + WIDGETS Log weight by hand or let a smart scale sync it through Apple Health, see the 90-day trend, and keep your score, streak and today's protocol one glance away. FREE - 5 food scans per day - Personal T-Score across 7 pillars - Ingredient breakdown per scan PRO — SUBSCRIPTION REQUIRED Unlimited scans with calories and macros, lab-report scanning with history and PDF export, the full 7-pillar dashboard, AI daily protocol with swaps and streaks, supplement stack audit, monthly face + body scans, unlimited coach questions, XP and Spartan ranks, weight log and home-screen widgets. Pro is a Weekly or 3-Month auto-renewing subscription. It renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. WHY SCANNING BEATS TRACKING Most men count calories. Calories don't tell you which ingredients research links to your hormones. Don't log every macro — scan it once and get both: the one score that matters, and the calories and macros as a byproduct. *For educational purposes only. Scores are lifestyle estimates based on ingredient analysis and published research — not medical measurements. Lab values you enter are stored for your own tracking and never used to calculate your T-Score. Not intended to diagnose, treat, cure, or prevent any condition. Always consult a qualified healthcare professional before making health-related decisions. Terms of Use: https://tboostscan.com/terms-conditions

Screenshots

The Great Lock In Challenge4 screens
Testosterone Tracker4 screens

Verdict

The call

The Great Lock In Challenge and Testosterone Tracker are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. The Great Lock In Challenge sells 2 in-app purchases, starting at $3.99 per 7 days and Testosterone Tracker sells 4 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
The Great Lock In Challenge versus Testosterone Tracker: the parameters behind the verdict, then further details
ParameterThe Great Lock In ChallengeTestosterone Tracker
PriceFreeFree
Rating—4.3 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequency—Every 10 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size21 MB45 MB
Age rating12+12+
DeveloperTHIERRY VICTOR E DE BELDERAnton Dimas

In-app purchases

2 purchases

The Great Lock In Challenge

Subscriptions2
  • Lock In Pro Weekly$3.997 Days
  • Lock In Pro Yearly3 Days trial$49.991 Year
4 purchases

Testosterone Tracker

Subscriptions4
  • T-Boost Scan Weekly Pro3 Days trial$7.997 Days
  • T-Boost Scan Weekly3 Days trial$14.997 Days
  • 3 Months – Intro Offer$24.993 Months
Show 1 more
  • T-Boost Scan 3 Months$49.993 Months

Questions

Is The Great Lock In Challenge free?
The Great Lock In Challenge is free to download, with in-app purchases available.
Is Testosterone Tracker free?
Testosterone Tracker is free to download, with in-app purchases available.
Do The Great Lock In Challenge or Testosterone Tracker have ads?
Neither The Great Lock In Challenge nor Testosterone Tracker shows ads.

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