Peptide AI vs LychnoFit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Protocol tracking and reminders
- Biomarker analysis
- AI-powered data summaries
- Body composition scanning
- Research-grade scientific basis
- Secure and private data handling
Read full descriptionHide 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.
LychnoFit
Read full descriptionHide 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
Verdict
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
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.
Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 1, 2026 and September 13, 2026 respectively.
| Parameter | Peptide AI | LychnoFit |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (69 ratings) — better | — |
| Positive reviews | 76.5% of reviews | — |
| Number of ratings | 69 — better | — |
| Update frequency | Every 5 days | Every 5 days |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 37 MB | 52 MB |
| Age rating | 17+ | 4+ |
| Developer | Peptide AI | Hasan ergunt |
In-app purchases
Peptide AI
- 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 moreShow fewer
- Peptide AI Annual Subscription7 Days trial$59.991 Year
LychnoFit
- Monthly$0.991 Month
- Quarterly$2.993 Months
- Yearly$6.991 Year









