Comparison

Pep vs Vialy

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

Head to head
About

Pep

Features
Read full description

Never miss a dose or lose track of your protocol. Pep is the tracker built specifically for peptides, TRT, HRT, and GLP-1 medications. Protocols, reminders, inventory, insights, and a reconstitution calculator, all in one beautifully designed app. YOUR PROTOCOL AT A GLANCE Open Pep and see exactly what's due today: every compound, every dose, in one clean daily view. Log in a single tap, and let the Insights hub turn your history into a real picture of your protocol. Light and dark mode included. TRACK EVERY DOSE, EFFORTLESSLY • One-tap dose logging from your daily view • Flexible scheduling: daily, specific days, custom intervals, or titration schedules that step your dose up automatically • Push reminders for every scheduled dose • Multiple compounds and stacked protocols, side by side • Pause, resume, end, or clone protocols anytime UNDERSTAND YOUR PROTOCOL • Insights & analytics: adherence trends, dose history, and estimated compound levels over time • Injection site tracking with a visual body map, so you can rotate sites with confidence • Symptom logging tied to doses and compounds, so you can spot patterns • Progress photos to see changes over time DIAL IN EVERY DRAW • Reconstitution calculator: know exactly how much bacteriostatic water to add and how many units to draw • Works with vials, pens, tablets, and ampules • Inventory tracking with automatic depletion and low-stock alerts, so you reorder before you run out BUILT FOR YOUR PROTOCOL Whether you're on BPC-157, TB-500, CJC/Ipamorelin, GHK-Cu, testosterone replacement therapy, semaglutide, tirzepatide, retatrutide, or HRT, Pep has you covered. The compound library includes 145+ peptides, TRT medications, and GLP-1s, with pre-built protocol templates to get you started in minutes. HOW IT WORKS 1. Set up your protocol: compounds, doses, frequency, timing 2. Get reminders for every scheduled dose 3. Log with one tap and track how you feel 4. Watch your insights build with every dose 5. Manage inventory and know when to reorder Pep Free includes up to two active protocols. Upgrade to Pep Pro for unlimited active protocols, inventory tracking, insights, templates, and more. Pep is a tracking tool and does not provide medical advice. Always consult a healthcare professional about your treatment. Ditch the spreadsheets, notes, and alarms. Download Pep today. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Vialy

This app helps adults using prescribed peptides track their doses, manage protocols, and log injections. It calculates concentrations and units, plans injection schedules, and tracks vial usage. A reference library and dose reminders are included.

Highlights
  • Live dose and concentration calculation
  • Customizable protocol planning
  • Body map injection logging
  • Vial usage and cost tracking
  • Built-in peptide reference library
  • Dose reminders
  • Data export (JSON/CSV)
Features
Read full description

Vialy is a personal tracking and calculator tool for adults using prescribed peptides. It handles the math so you do not have to. Free. No ads. No subscriptions. No in-app purchases. RECONSTITUTE WITH CONFIDENCE Scrub the BAC water amount and watch the dose, the concentration, and the syringe units update live. No more squinting at a calculator app between hand washes. PLAN YOUR PROTOCOL Build phases with custom durations, scheduled days (daily, 5-on-2-off, weekly, or anything custom), dose in milligrams, multiple dose times per day, and a grace window for missed doses. Vialy keeps track of where you are in the protocol and what is next. LOG INJECTIONS Tap to log a dose from a body map. Vialy remembers each site you have used and warms up the map with halos so rotation becomes automatic. No spreadsheet required. TRACK YOUR VIALS Each vial shows the doses remaining, the estimated days until empty, and the cost. Plan-backed vials are sorted by soonest-empty first; as-needed vials get their own simpler view. Archive a vial when it is retired and the stats stay with it. PEPTIDE REFERENCE LIBRARY A built-in catalog of common peptides with mechanism notes, half-life, storage guidance, common side effects, and contraindications. This information is for context only and is not medical advice. DOSE REMINDERS Optional local notifications at your scheduled dose times, plus a heads-up when a vial is running low so you have time to reorder. EXPORT YOUR DATA JSON or CSV from Settings, anytime. Your data is yours. PRIVATE BY DESIGN - Sign in with Apple only - no passwords, no third-party logins - No tracking, no analytics, no advertising - No HealthKit access, no location, no camera, no contacts - Account deletion is one tap; your data is removed from our servers IMPORTANT Vialy is not a medical device and does not provide medical advice. It does not replace your clinician. All doses are entered by you for personal reference only. Always follow the guidance of a licensed clinician who has prescribed your protocol.

Screenshots

Pep4 screens
Vialy4 screens

Verdict

The call

The clearest difference is in-app purchases: Vialy at none against Pep's 3. On price, update cadence, ads 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. Pep sells 3 in-app purchases, starting at $6.99 per month. Vialy asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
Pep versus Vialy: the parameters behind the verdict, then further details
ParameterPepVialy
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhoneiPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size91 MB15 MB
Age rating17+17+
DeveloperQuriocity Inc.Lunium AB

In-app purchases

3 purchases

Pep

Subscriptions2
  • Monthly$6.991 Month
  • Yearly3 Days trial$59.991 Year
One-time1
  • Lifetime$79.99
None

Vialy

No in-app purchases

Questions

Is Pep free?
Pep is free to download, with in-app purchases available.
Is Vialy free?
Vialy is free to download, with no in-app purchases.
Do Pep or Vialy have ads?
Neither Pep nor Vialy shows ads.
Which is updated more often, Pep or Vialy?
Pep ships an update every 2 days, and Vialy every 2 days. Most recently, Pep was updated on October 6, 2026 and Vialy on October 15, 2026.

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