Comparison

Metabolica vs Aligner Diary

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

Head to head
About

Metabolica

Features
Read full description

You want to take control of your weight but are unsure which nutrition plan actually works for your body. Metabolica replaces guesswork with science, giving you a clear picture of your metabolism and a realistic path to your goals. SCIENTIFIC CALCULATION ENGINE Metabolica uses three evidence-based formulas β€” Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle β€” to calculate your BMR (Basal Metabolic Rate), TDEE (Total Daily Energy Expenditure), and BMI (Body Mass Index) in seconds. Choose the formula that fits your body best and switch at any time. Enter your age, height, weight, and activity level to get a precise daily calorie target. 8 NUTRITION PROFILES From standard balanced eating to ketogenic, high-protein athletic nutrition, Mediterranean, vegan, low-carb, and intermittent fasting β€” 8 science-backed nutrition profiles are built in. Each profile applies its own macro split to your daily calorie target. Switch profiles anytime to experiment with different approaches. FOOD DATABASE A food database with more than 100 everyday foods makes calorie counting effortless. Search foods, adjust portions, and log daily meals from a single screen. Track protein, carbs and fat against your daily targets. EXERCISE PROGRAMS Build personalized workout plans with 50 plus movements aligned with ACSM and NSCA standards. Each exercise includes form guidance and calorie burn estimates. Your plan is built automatically from your profile, activity level and goal, from cardio to strength work. PROGRESS TRACKING Visualize your weight and calorie data with clear, intuitive charts. Weekly calorie charts and a long-term weight trend let you spot your progress at a glance. Water intake tracking and all key health metrics are managed in one place, giving you a complete picture of your progress. PREMIUM: 8 ADVANCED SCIENTIFIC MODULES Metabolica PRO unlocks 8 advanced analysis modules: Metabolic Adaptation Radar β€” Detects diet plateau risk before it happens and suggests strategy adjustments. Prevents metabolic slowdown during prolonged calorie restriction. Insulin-Mineral Optimizer β€” Provides personalized mineral and nutrient recommendations to stabilize blood sugar fluctuations. Addresses energy crashes at their root. EPOC Tracker β€” Measures post-exercise oxygen consumption and the resulting calorie burn. Shows how long your metabolism stays elevated after each workout. Circadian Nutrition β€” Aligns meal timing with your body clock to maximize metabolic efficiency. Recommends what to eat and when based on circadian biology research. Vitamin Shield β€” Creates a personalized supplement plan to reduce sarcopenia risk. Identifies micronutrient deficiencies based on your age and activity level. NEAT Analyzer β€” Maximizes energy expenditure from everyday movements like walking and climbing stairs. Quantifies non-exercise activity contribution to daily calorie burn. Nutrient Interaction Detector β€” Checks whether foods consumed together affect each other's absorption. Flags beneficial combinations and potential conflicts. Digestive Efficiency β€” Shows how much of the energy in your food your body can actually use. Breaks down the energy spent on digestion and digestive losses using Atwater factors. METABOLICA PRO Unlock all 8 advanced analysis modules, unlimited food logging, your personal workout plan, progress charts and photos, hormone health and widgets. Choose a weekly, monthly, 3-month or yearly plan, or a one-time lifetime unlock. Eligible new subscribers get a free trial on selected plans. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage them in your App Store account settings. Privacy Policy: https://gokhanatar.github.io/metabolica/privacy-policy.html Terms of Use: https://gokhanatar.github.io/metabolica/terms-of-use.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Aligner Diary

Features
Read full description

Aligner Diary is a private personal tracker designed to make clear-aligner routines easier to follow and treatment progress easier to review. WEAR TIME AT A GLANCE Record when your aligners go in or come out. The app totals today’s wear and time-out periods and shows how much time remains within your daily goal. CLEAR TRAY-CYCLE PLANNING Set your current tray, total number of trays and change interval. See your current stage, goal streak and next planned tray change from the Today and Progress screens. PHOTO PROGRESS JOURNAL Add teeth photos from the camera or photo library and revisit them by date, so small changes are easier to notice over time. CHECK-INS AND TRENDS Log soreness, fit, attachment concerns, aligner damage, sharp edges and gum bleeding. Trend views help you organize recent observations and decide what to discuss with your dentist or orthodontist. CALENDAR AND EDITABLE HISTORY Use the calendar to review daily wear, photos and check-ins. Edit or delete entries whenever something was recorded incorrectly. REMINDERS, THEMES AND TWO LANGUAGES Use optional wear and tray-change reminders, choose from multiple interface themes, and switch between Simplified Chinese and English. ALIGNER DIARY PRO Optional Pro access adds dentist-ready PDFs, shareable photo comparison cards, advanced reminders and a device privacy lock. Choose monthly, annual or lifetime access and restore eligible Apple purchases. ACCOUNT, PRIVACY AND LOCAL DATA Core aligner records and teeth photos stay on your device. No registration is required to buy or restore Pro through Apple. An optional account can sync membership entitlement; any account can be permanently deleted in the app. Export, preview and restore local backups at any time. Aligner Diary is for personal tracking only. It does not provide medical diagnosis, treatment advice or emergency services. Contact a dentist or orthodontist about persistent pain, damaged aligners, poor fit or other health concerns. Terms of Use: https://alignerdiary.com/terms Privacy Policy: https://alignerdiary.com/privacy Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Metabolica4 screens
Aligner Diary4 screens

Verdict

The call

The clearest difference is update cadence: Aligner Diary at weekly against Metabolica's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Metabolica sells 6 in-app purchases, starting at $3.99 per 7 days and Aligner Diary sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Metabolica ships an update every 3 weeks, Aligner Diary weekly. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

Scorecard1 real difference Β· 5 level
Metabolica versus Aligner Diary: the parameters behind the verdict, then further details
ParameterMetabolicaAligner Diary
PriceFreeFree
Update frequencyEvery 3 weeksWeekly β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details β€” not scored
Size12 MB47 MB
Age rating17+4+
DeveloperGokhan Alp Atar思佳 李

In-app purchases

6 purchases

Metabolica

Subscriptions5
  • Premium Weekly3 Days trial$3.997 Days
  • Metabolica Premium Monthly$8.991 Month
  • Premium 3 Months$19.993 Months
Show 2 more
  • Premium Yearly Offer$29.991 Year
  • Yearly Premium7 Days trial$53.991 Year
One-time1
  • Metabolica Premium Lifetime$149.99
3 purchases

Aligner Diary

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Annual$3.991 Year
One-time1
  • Pro Lifetime$7.99

Questions

Is Metabolica free?
Metabolica is free to download, with in-app purchases available.
Is Aligner Diary free?
Aligner Diary is free to download, with in-app purchases available.
Do Metabolica or Aligner Diary have ads?
Neither Metabolica nor Aligner Diary shows ads.
Which is updated more often, Metabolica or Aligner Diary?
Metabolica ships an update every 3 weeks, and Aligner Diary weekly. Most recently, Metabolica was updated on October 24, 2026 and Aligner Diary on October 5, 2026.

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