Comparison

Peptide Stack OS vs Vialo

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

Head to head
About

Peptide Stack OS

Features
Read full description

Peptide Stack OS is the precise way to track your peptide protocol. Log every dose across multiple substances, see exactly what's scheduled today, monitor adherence at a glance, and never miss a scheduled injection again. Built for users running multi-peptide stacks, testosterone replacement protocols, and longevity regimens — with the same calm precision serious athletes expect from their training apps. WHAT YOU CAN TRACK - Multiple peptides on rotation — BPC-157, CJC-1295, Ipamorelin, MOTS-c, Tirzepatide, Retatrutide, NAD+, Tesamorelin, Sermorelin, Selank, Semax, KPV, GHK-Cu, Melanotan II, PT-141, TB-500, Thymosin Alpha-1, Epitalon, and more - Dosage, frequency, route, and reminder time per substance - TRT-style protocols including testosterone esters (cypionate, enanthate, propionate, sustanon), HCG, and supporting compounds - Daily check-ins for symptoms and overall feeling - Side-effect logs categorized for quick pattern-spotting - Weight trends in lb or kg with weekly result snapshots DAILY USE - Today's stack — exactly what's scheduled, in order, with logged-vs-upcoming status - Quick-log tiles for doses, daily check-ins, side effects, weekly results, and weight - Calendar view of every dose, every day — backfill missed entries any time - Adherence stats once a week of data accumulates - Local notifications that ping before each scheduled dose CUSTOMIZE THE LOOK - Personalize fonts, colors, and button shapes - Light and dark theme presets - Override any token live from the Settings → Customize Theme editor PRIVACY-FIRST - Anonymous accounts by default — no sign-up required to use the app - Email sign-in is an optional upgrade if you want to sync across devices - Delete your account from Settings any time — every log, every photo, every setting is wiped - Encrypted token storage via the iOS Keychain IMPORTANT This app is a self-tracker. It is not medical advice and is not a substitute for a licensed clinician. Peptides used outside of approved indications carry risk. Consult a qualified healthcare professional before starting, stopping, or adjusting any protocol. Free during early access.

About

Vialo

This app provides precise peptide dosing calculations and a comprehensive safety and education library. It offers evidence-based information on peptide handling, side effects, and injection techniques, ensuring users can administer peptides safely and accurately.

Highlights
  • Precise dosing calculator
  • Safety and education library
  • Sterile handling guidance
  • Injection technique instructions
  • Peptide handling and storage
  • Side effect recognition
  • Evidence-based compound breakdowns
  • Protocol saving and reminders
Features
Read full description

Vialo is built for people who take peptides seriously and need to get it right. It pairs a precise dosing calculator with a real safety and education library, so you know both the exact amount to draw and the reasoning behind it. SAFETY FIRST, NOT AS AN AFTERTHOUGHT The Safety Hub covers what actually keeps you safe: sterile handling and infection control, injection technique, rotating your sites, storage and stability, and how to recognize a bad product. You get clear guidance on which side effects are normal and which ones mean you should stop and seek care right away. LEARN EVERY COMPOUND Evidence-based, plain-English breakdowns of how each peptide works, typical dosing ranges, and how to handle it. More than 40 peptides are covered, including blends like GLOW and KLOW. No forum guesswork, no hype. ACCURATE RECONSTITUTION AND DOSING Enter your vial strength, the bacteriostatic water you added, and your target dose. Vialo shows the exact number of units to draw on an insulin syringe, with a clear "draw to this mark" indicator, plus concentration, doses per vial, and a warning when a dose is too large or too small to measure accurately. Tap any result to see how it was calculated. PROTOCOLS AND REMINDERS Save any dose as a protocol, set how often you take it, and check it off each day. Optional reminders stay on your device and keep you consistent without the clutter. FIND THE RESEARCH Search PubMed, Google Scholar, ClinicalTrials.gov, and preprint servers for studies on any peptide, without leaving the app. PRIVATE BY DEFAULT No account, no login, no tracking. Everything you enter stays on your device. Vialo is an educational and harm-reduction reference tool. It is not medical advice and does not replace a licensed healthcare professional. Always verify your calculations and use sterile technique.

Screenshots

Peptide Stack OS4 screens
Vialo4 screens

Verdict

The call

Peptide Stack OS and Vialo are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Peptide Stack OS versus Vialo: the parameters behind the verdict, then further details
ParameterPeptide Stack OSVialo
PriceFreeFree
Rating—5.0 (5 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—5 — better
Update frequency—Weekly
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size53 MB30 MB
Age rating12+17+
DeveloperLeverage Ventures Limited Liability CompanyMATTHEW ELLIOTT ALEXANDER

In-app purchases

None

Peptide Stack OS

No in-app purchases

None

Vialo

No in-app purchases

Questions

Is Peptide Stack OS free?
Peptide Stack OS is free to download, with no in-app purchases.
Is Vialo free?
Vialo is free to download, with no in-app purchases.
Do Peptide Stack OS or Vialo have ads?
Neither Peptide Stack OS nor Vialo shows ads.

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