Comparison

Peptide AI vs LychnoFit

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

Head to head
About

Peptide AI

Track peptide cycles, log lab results, and gain AI-powered insights into your physiology. Visualize your progress with body scanning and make informed decisions based on research-grade science.

Highlights
  • Protocol tracking and reminders
  • Biomarker analysis
  • AI-powered data summaries
  • Body composition scanning
  • Research-grade scientific basis
  • Secure and private data handling
Features
Read full description

Peptide AI is the complete peptide tracker: reconstitution calculator, dose log with reminders, injection site rotation, GLP-1 and TRT support, bloodwork analysis, and an AI assistant grounded in your own data. Built for people who run real protocols: BPC-157, TB-500, GLP-1s (semaglutide, tirzepatide, retatrutide), CJC-1295/Ipamorelin, GHK-Cu and 50+ more compounds with research-backed profiles. TRACK — Log every dose in two taps. Vial inventory, bacteriostatic water math, syringe units (mcg ⇄ IU ⇄ mL), expiry and low-stock alerts, injection-site rotation map, streaks and Protocol Confidence scoring. CALCULATE — Reconstitution calculator that solves dose-to-volume instantly. Save per-vial settings so the math is done once. DECODE — Upload labs and bloodwork; see biomarker trends against your protocol timeline. Connect Apple Health and wearables for recovery, sleep, and body-composition context. ASK — The AI assistant answers with your logs and labs as context, cites peer-reviewed research, and flags what to discuss with your clinician. Educational only — no medical advice. PRIVATE BY DESIGN — Your protocol data stays yours. No ads, no data sales. Peptide AI is an educational tracking tool, not a medical device. Always consult a licensed clinician before starting or changing any protocol.

About

LychnoFit

Features
Read full description

LychnoFit is an AI-powered personal fitness and bodybuilding app. • AI COACH: Get instant, personalized recommendations on workouts, nutrition, and fitness. • BODY ANALYSIS FROM A PHOTO: Upload a photo, let AI analyze your body composition, and view a realistic 3-month progress projection. • WORKOUT TRACKING: Create your weekly program, log your sets and reps, and view your workout history. • PROGRAM SCANNING: Take a photo of your workout program, and the app will automatically identify the exercises. • PROGRESS GRAPHS: Track your measurements and progress with visual graphs. • SOCIAL: Share your progress, follow others, and stay motivated. • REMINDERS: Stay on track with workout, hydration, and supplement reminders. Unlock unlimited AI analysis and coach chat with a LychnoFit Pro subscription. Terms of Use (EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Peptide AI4 screens
LychnoFit4 screens

Verdict

The call

The clearest difference is iOS requirement: LychnoFit at 15.1 against Peptide AI's 18.0. 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. Peptide AI sells 4 in-app purchases, starting at $6.99 per 7 days and LychnoFit 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

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 1, 2026 and September 13, 2026 respectively.

Scorecard1 real difference · 9 level
Peptide AI versus LychnoFit: the parameters behind the verdict, then further details
ParameterPeptide AILychnoFit
PriceFreeFree
Rating4.4 (69 ratings) — better—
Positive reviews76.5% of reviews—
Number of ratings69 — better—
Update frequencyEvery 5 daysEvery 5 days
AdsYesYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size37 MB52 MB
Age rating17+4+
DeveloperPeptide AIHasan ergunt

In-app purchases

4 purchases

Peptide AI

Subscriptions4
  • Peptide AI Weekly Subscription$6.997 Days
  • Peptide AI Monthly Subscription7 Days trial$14.991 Month
  • Peptide AI Annual Discount7 Days trial$29.991 Year
Show 1 more
  • Peptide AI Annual Subscription7 Days trial$59.991 Year
3 purchases

LychnoFit

Subscriptions3
  • Monthly$0.991 Month
  • Quarterly$2.993 Months
  • Yearly$6.991 Year

Questions

Is Peptide AI free?
Peptide AI is free to download, with in-app purchases available.
Is LychnoFit free?
LychnoFit is free to download, with in-app purchases available.
Do Peptide AI or LychnoFit have ads?
Both Peptide AI and LychnoFit show ads.
Which is updated more often, Peptide AI or LychnoFit?
Peptide AI ships an update every 5 days, and LychnoFit every 5 days. Most recently, Peptide AI was updated on October 1, 2026 and LychnoFit on September 13, 2026.

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