Comparison

Vial vs Loop

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

Head to head
About

Vial

Log peptide doses, visualize plasma concentration curves in real-time, and manage cycles with curated protocols. Track inventory, rotate injection sites, and access contextual guidance. Designed for serious research with a private-first approach, keeping all data on your device.

Highlights
  • Log doses in seconds
  • Real-time plasma concentration visualization
  • Curated protocol templates
  • Inventory and reconstitution calculator
  • Injection site rotation map
  • Context-aware peptide guidance
  • Home screen widgets and Siri integration
Read full description

Track peptide and GLP-1 doses, manage reminders, and keep a clear injection log. Vial brings your schedule, dose history, and half-life estimates into one calm, organized app. A Vial Pro subscription is required to use the tracking features. There is no free tier. YOUR ROUTINE, AT A GLANCE See scheduled doses on Home. Log a dose, mark it skipped, and choose reminder times and days that match your existing routine. A DOSE LOG YOU CAN TRUST Search and filter your Logbook by date, compound, or protocol. Record amounts, injection sites, and notes. Correct an entry or undo a recent log without losing track of your history. Choose mg or mcg for dose displays. HALF-LIFE ESTIMATES, CLEARLY EXPLAINED Explore estimated remaining amounts for supported routes and formulations, based on recorded doses and linked published half-life references. Compare curves, focus on a compound, and inspect a point in time. Older doses remain part of the estimate when you pause a protocol. These are simplified informational models, not measured blood concentrations, measures of effect, or instructions for when or how much to dose. SCHEDULES THAT FIT YOUR PLAN Create custom tracking schedules by entering your prescribed amount, frequency, route, and duration. Follow the plan you have agreed with your healthcare professional. INJECTION SITES AND TRACKING INSIGHTS Record injection sites on a body diagram and review your site history. See adherence trends and logging activity over time. YOUR RECORDS, ON YOUR DEVICE Core tracking does not require a Vial account. Tracking records are stored locally on your device and can be exported. If your subscription expires, your records are preserved, with options to export your data and restore access. MEET MIRA Your optional AI companion helps you find and summarize your Vial records and understand the informational chart. Review and confirm proposed tracking actions before they are saved. Mira requires a recurring Vial Pro subscription, Sign in with Apple, and explicit AI-sharing consent. Usage limits apply. Mira does not provide medical or dosing advice. VIAL PRO Choose a weekly, monthly, or annual subscription. Current prices, billing periods, and any eligible introductory trial are shown before purchase. Trial eligibility is determined by the App Store. Payment is charged to your Apple Account at purchase confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account settings. Any unused portion of a free trial is forfeited when you purchase a subscription, where applicable. FOR TRACKING, NOT MEDICAL ADVICE Vial does not sell peptides, recommend vendors, diagnose conditions, or prescribe treatment. Consult a licensed healthcare professional about medications, dosing, and your care. Support: https://vialtracker.com/support Privacy: https://vialtracker.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Loop

Read full description

Loop is a private, easy-to-use tracker for your peptide, GLP-1, or TRT injection routine. It keeps your schedule, dose history, reminders, supplies, and injection sites organized in one place - so you can stay consistent without spreadsheets or guesswork. Loop is a personal tracking tool. It does not provide medical advice, dosing recommendations, or any way to obtain medications. Always follow the guidance of a qualified healthcare professional. WHAT YOU CAN DO WITH LOOP • Build your schedule - set up recurring injections and see your whole routine at a glance • Log every dose - keep a clear, private history of what you recorded and when • Stay on time - reminders so you never miss a scheduled dose • Track your supply - know how much you have left and reorder in time • Rotate injection sites - log sites on a body map to keep your rotation organized PRIVATE BY DESIGN Your data is yours. Loop is built around privacy, with secure sign-in and full control over your information, including in-app account deletion. LOOP PRO Loop requires a subscription to use. Choose a monthly or yearly plan; the yearly plan may include an introductory free trial where offered. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. HEALTH DISCLAIMER Loop is designed for personal tracking and educational purposes only. It is not intended to provide medical advice, diagnosis, treatment recommendations, or dosing instructions. Always consult a qualified healthcare provider for any medical decisions or health concerns. All features are for personal record-keeping and educational reference only. Privacy Policy: https://tryloop.health/privacy-policy Terms of Service: https://tryloop.health/terms-of-service Support: hello@tryloop.health

Screenshots

Vial4 screens
Loop4 screens

Verdict

The call

The clearest difference is update cadence: Vial at every 9 days against Loop's every 2 months. Vial also leads on iOS requirement (17.0 vs 26.5). 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. Vial sells 3 in-app purchases, starting at $5.99 per 7 days and Loop sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Vial ships an update every 9 days, Loop every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 7 level
Vial versus Loop: the parameters behind the verdict, then further details
ParameterVialLoop
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better26.5
Further details — not scored
Size14 MB37 MB
Age rating12+4+
DeveloperArvion Holdings LLCROK POPOVIC

In-app purchases

3 purchases

Vial

Subscriptions3
  • Vial Pro Weekly$5.997 Days
  • Vial Pro Monthly7 Days trial$9.991 Month
  • Vial Pro Annual$59.991 Year
3 purchases

Loop

Subscriptions3
  • Loop Pro - Monthly$9.991 Month
  • Loop Pro - Yearly Offer$29.991 Year
  • Loop Pro - Yearly3 Days trial$39.991 Year

Questions

Is Vial free?
Vial is free to download, with in-app purchases available.
Is Loop free?
Loop is free to download, with in-app purchases available.
Do Vial or Loop have ads?
Neither Vial nor Loop shows ads.
Which is updated more often, Vial or Loop?
Vial ships an update every 9 days, and Loop every 2 months. Most recently, Vial was updated on October 24, 2026 and Loop on October 28, 2026.

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