Comparison

Log Nutrients vs Biostacks

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

Head to head
About

Log Nutrients

Features
Read full description

Track your calorie deficit with precision using real energy data from Apple Watch. This app automatically calculates TDEE and daily calorie deficit while logging calories, protein, sodium, potassium, and electrolyte balance without clutter or guesswork. Built for data-driven nutrition tracking, the app combines accurate meal logging with Apple Health energy data to show how intake and burn interact over time. Daily totals, rolling averages, and visual charts make it easy to see trends, not just single days. Features - Automatic TDEE calculation using Apple Watch energy burned - Daily and averaged calorie deficit tracking (week, month, year) - Precise tracking of calories, protein, sodium, and potassium - Sodium-to-potassium (Na:K) ratio monitoring for electrolyte balance - Goal ranges for calories, protein, sodium, potassium, and deficit - Clean charts focused on trends, not noise

About

Biostacks

Easily manage your supplement intake with barcode scanning, AI assistance, and detailed insights. Track routines, monitor nutrient coverage, and analyze your stack's effectiveness and cost. Prioritizes user privacy with offline functionality and optional iCloud sync.

Highlights
  • Barcode scanning for supplement library
  • AI-powered supplement routine analysis
  • Customizable daily and cycle schedules
  • StackScore for routine quality
  • Potential interaction warnings
  • RDA coverage and nutrient overlap analysis
  • Mood, energy, and sleep trend tracking
Features
Read full description

Biostacks helps you track, understand, and improve your supplement routine while keeping your data private. Build your supplement library by: • Scanning barcodes with your camera • Searching NIH DSLD and Open Food Facts data (well-known brands and popular supplements available offline) • Entering supplements, doses, and nutrients manually • Asking the built-in Apple Intelligence assistant (iPhone 15 Pro and newer) • Asking your own AI assistant with a ready-made copy-and-paste prompt Create routines and schedules that match how you take things: • Daily, specific weekdays, or on/off cycles (like 5 days on, 2 off) • Multiple times of day, from a morning multivitamin to an evening magnesium • Peptide support: vial size, reconstitution volume, and a draw-volume calculator Then get insights into your stack: • StackScore, a 0 to 100 quality score for your whole routine • Potential interactions based on public research, each with a source link • Warnings when a nutrient total goes over its safe upper limit • RDA coverage across your vitamins and minerals • Nutrient overlaps between products • Brand quality and trust signals • Adherence history and score trends over 30, 90, or 365 days, with CSV export • Monthly cost per supplement and per stack • Running-low refill alerts Log doses with one tap, mark a whole stack taken at once, and long-press to skip a dose without breaking your streak. Reminders keep you on schedule, and smart tuning suggests a better reminder time when you consistently log late. Progress rings and streaks show your consistency day by day. You can also log a dose by asking Siri. Your day, organized: • Doses grouped into taken, due, and upcoming • A calendar of every past day, with mood dots from your check-ins • Search and filter once your stack grows • Notes on stacks and on individual supplements • Reorder stacks and items to match how you take them • Dark, light, and system themes Check in daily on your mood, energy, sleep, and focus. View your trends, run on/off experiments, and see whether a supplement moves the numbers. Correlations only appear once there is enough data behind them; Biostacks will not show you a pattern it cannot stand behind. Ask questions in the on-device AI chat: review your routine, explain an ingredient, or change your stack by describing what you want. Every suggested change appears as a review you accept or reject, with undo. Prefer your personal assistant? Copy the prompt, paste the answer back, and review the changes the same way. Privacy first: • Works fully offline • No account and no sign-up • Your health data stays on your device • Optional backup and sync to your own iCloud • Snapshots and version history, so you can roll back any change • Export everything anytime as JSON or PDF, or share a stack as plain text Everyday tracking covers dose logging, streaks, reminders, check-ins with rating trends, the library and barcode scanner, export, import, and backups. Biostacks Pro, an annual subscription with a 7-day free trial, adds StackScore insights, check-in correlations, historical trends, cost tracking, smart reminder tuning, and cloud sync. Whether you take a daily vitamin D and omega-3 or manage a full stack of supplements, nootropics, and peptides, Biostacks gives you one private place to log your intake, stay consistent, and understand how your routine fits together.

Screenshots

Log Nutrients4 screens
Biostacks4 screens

Verdict

The call

The clearest difference is update cadence: Biostacks at every 10 days against Log Nutrients's every 3 weeks. Biostacks also leads on iOS requirement (15.1 vs 26.0). On price, 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

Both are free to download. Log Nutrients sells 1 one-off in-app purchase and Biostacks sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Log Nutrients ships an update every 3 weeks, Biostacks every 10 days. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 7 level
Log Nutrients versus Biostacks: the parameters behind the verdict, then further details
ParameterLog NutrientsBiostacks
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, iPod — better
Requires iOS26.015.1 — better
Further details — not scored
Size2 MB63 MB
Age rating4+17+
DeveloperQuiet Mind CreativeHmujo LLC

In-app purchases

1 purchases

Log Nutrients

One-time1
  • Log Nutrients Pro$9.99
2 purchases

Biostacks

Subscriptions2
  • Biostacks Pro - Monthly7 Days trial$3.991 Month
  • Biostacks Pro - Annual14 Days trial$24.991 Year

Questions

Is Log Nutrients free?
Log Nutrients is free to download, with in-app purchases available.
Is Biostacks free?
Biostacks is free to download, with in-app purchases available.
Do Log Nutrients or Biostacks have ads?
Neither Log Nutrients nor Biostacks shows ads.
Which is updated more often, Log Nutrients or Biostacks?
Log Nutrients ships an update every 3 weeks, and Biostacks every 10 days. Most recently, Log Nutrients was updated on October 2, 2026 and Biostacks on October 6, 2026.

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