Comparison

Optimized Human vs LeibFit

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

Head to head
About

Optimized Human

Manage peptide protocols with ease. Plan cycles, calculate doses, track injections, and monitor inventory. Syncs across devices and offers free basic tracking with an optional Pro subscription for advanced features.

Highlights
  • Protocol planning with cycling and periodization
  • Titration support for dose adjustments
  • Reconstitution calculator for precise dosing
  • Dose logging with visual injection site tracking
  • Inventory management with low-stock alerts
  • Cross-device data synchronization
Features
Read full description

Optimized Human is the simplest way to manage your peptide protocols — built for people who want their schedules, doses, and inventory organized in one place. PLAN YOUR PROTOCOLS • Build schedules with real cycling and periodization — not just daily reminders • Titration support for ramping doses up or down over time • Smart defaults so setup takes seconds, with advanced options when you need them GET THE MATH RIGHT • Built-in reconstitution calculator converts your vial size and diluent into exact syringe units • Per-dose breakdowns so you always know how much to draw TRACK EVERY DOSE • Log doses in a tap from a weekly dashboard • Back-date a missed dose to the day you actually took it • Visual body map to rotate and track injection sites • Weight and progress tracking to see how things are going STAY STOCKED • Inventory tracking with low-stock alerts • Forecasting so you reorder before you run out YOUR STACK, EVERYWHERE • Your data stays in sync between the mobile app and the web app • Discover, import, and share protocols FREE TO START Track your stack for free. Upgrade to Pro for unlimited schedules, inventory forecasting, and more. — Optimized Human is an informational tracking tool. It does not provide medical advice, diagnosis, or treatment, and it is not a substitute for guidance from a qualified healthcare professional. Always consult your doctor before starting, stopping, or changing any protocol. You are responsible for complying with the laws that apply to you. Optimized Human LLC · Sheridan, WY, USA Optimized Human Pro is an auto-renewable subscription ($20.00/month or $192.00/year). Payment is charged to your Apple ID at confirmation. It renews automatically unless canceled at least 24 hours before the end of the current period; manage or cancel anytime in your Apple ID account settings. Terms of Use (EULA): https://optimizedhuman.app/terms Privacy Policy: https://optimizedhuman.app/privacy

About

LeibFit

Features
Read full description

Your daily readiness every morning in one number from 0 to 10, for iPhone and Apple Watch, no band and no subscription required. LeibFit combines recovery, sleep and the strain you have already carried today into your readiness. An arc shows where you are today and where you usually are. Your strength training adapts to it. Works with any watch that writes to Apple Health, or directly with your fitness band. Everything stays on your device: no account, no cloud, no tracking. YOUR READINESS IN ONE NUMBER A number from 0 to 10 and a word: Go for it, Ready, Pace yourself, Take it easy, In reserve, Wind down. The arc shows your personal range from the last 30 days, and below it you see which signals carry today's number. Missed the night? LeibFit estimates with your answer to "How fit do you feel?". Personal bests show up right away. SLEEP, RECOVERY, STRAIN Three lenses in the Health tab, each with its own arc and your own range: - Recovery from HRV, resting heart rate and sleep, measured against your own 30-day norm. - Sleep with stages, need, sleep debt, naps and a bedtime for tonight. - Strain from heart rate zones and training, with today's target. Share any area or personal best as an image. Plus 30-day trends, heart rate curve and vitals. YOUR PLAN KNOWS YOUR EQUIPMENT Tell LeibFit once what you have: barbell, dumbbells, machines, bands or bodyweight. It only plans with what you own, at home, at the gym or both. 91 exercises with explanations. STRENGTH AND CARDIO IN ONE WEEK The weekly view shows strength and cardio days side by side, plus your weekly strain against your usual range. AI plan, your own plan or free training. For running and cycling, LeibFit works out today's session: duration, zone, heart rate window. ADAPT INSTEAD OF GRINDING Your weight suggestion learns. Hit all reps and it goes up next time. Low recovery and the increase waits. On weak days LeibFit removes unfinished sets. DURING YOUR WORKOUT Check off every set, "Last" is right next to it, today's strain and target are in view, the rest timer runs as an arc. The same on your Apple Watch, with complications for readiness and strain. GOALS, HONESTLY ESTIMATED Running, weight, fitness or strength goal. The arc shows the way from start to goal and where you typically are this week, as a range, never a promise. No smart scale? Just enter your weight. YOUR BAND, DIRECTLY Wear an Amazfit Helio Strap and LeibFit fetches your night directly via Bluetooth, without the maker's app. The connection uses an unofficial interface; a firmware update can interrupt it. JOURNAL: WHAT LINES UP FOR YOU A short morning check-in: alcohol, stress, caffeine. After enough days you see which answers line up with recovery, sleep and strain. Correlations, not causes. YOUR DATA IS YOURS No account, no servers, no analytics SDK. Health, journal and reminders are switched on one by one. Export any time. FREE AND LEIBFIT PRO Readiness, sleep, recovery and strain, journal, your goal with feasibility, sharing and export are free, no subscription. Pro unlocks: creating plans and starting workouts, free training, adapting to your recovery, history and weekly report, the way to your goal, the fitness lens, your own norm and journal correlations. Try Pro free for 7 days, then €6.99/month or €44.99/year. The subscription renews automatically unless cancelled, any time via your Apple ID. Note: coach chat and AI selection need Apple Intelligence and iOS 26. Everything else runs on iOS 17.6 or later without AI. Guidance, not diagnosis. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Optimized Human4 screens
LeibFit4 screens

Verdict

The call

The clearest difference is iOS requirement: Optimized Human at 15.1 against LeibFit's 17.6. On price, update cadence, ads and in-app purchases 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. Optimized Human sells 2 in-app purchases, starting at $19.99 per month and LeibFit sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Optimized Human ships an update fortnightly, LeibFit weekly. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 8 level
Optimized Human versus LeibFit: the parameters behind the verdict, then further details
ParameterOptimized HumanLeibFit
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.1 — better17.6
Further details — not scored
Size50 MB27 MB
Age rating17+4+
DeveloperOptimized Human LLCSebastian Leib

In-app purchases

2 purchases

Optimized Human

Subscriptions2
  • Pro — Monthly$19.991 Month
  • Pro — Annual1 Year trial$191.991 Year
2 purchases

LeibFit

Subscriptions2
  • LeibFit Pro – Monat$5.991 Month
  • LeibFit Pro – Jahr$39.991 Year

Questions

Is Optimized Human free?
Optimized Human is free to download, with in-app purchases available.
Is LeibFit free?
LeibFit is free to download, with in-app purchases available.
Do Optimized Human or LeibFit have ads?
Neither Optimized Human nor LeibFit shows ads.
Which is updated more often, Optimized Human or LeibFit?
Optimized Human ships an update fortnightly, and LeibFit weekly. Most recently, Optimized Human was updated on October 24, 2026 and LeibFit on October 15, 2026.

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