Comparison

StackTrax vs Bio Log

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

Head to head
About

StackTrax

Track peptide protocols and GLP-1 titrations with detailed logging, reminders, and injection site rotation. Access a research library and integrate with Oura for comprehensive health insights. Includes nutrition tracking and an AI protocol importer.

Highlights
  • Peptide and GLP-1 tracking
  • Dose logging and reminders
  • Injection site rotation
  • Research library with compound guides
  • Oura integration
  • AI Protocol Importer
  • Nutrition tracking
Features
Read full description

The peptide tracker built for people who take their protocol seriously. Whether you're running BPC-157, tracking a GLP-1 titration, tracking TRT, or managing a multi-compound stack — StackTrax helps you stay consistent, never miss a dose, and see what's actually working. FREE Research library — 90+ citation-backed compound guides. FDA labels, PMIDs, or community evidence, clearly labeled. PRO (subscription, manage at stacktrax.com) Log doses across multiple compounds and stacks. Set reminders for any cadence — daily, every other day, every 3 / 4 / 5 days, twice weekly, specific weekdays, "as needed," titration phases, cycle protocols. Injection site rotation with a front / back zone map. Vial inventory and low-stock alerts. Oura integration — readiness, sleep, HRV, resting heart rate, stress, resilience. AI Protocol Importer — paste your existing protocol or upload a screenshot, and StackTrax parses it into a tracker setup. Nutrition tracking — meals, barcode scanner, macros, hydration. HOW TO USE Use the iOS app for daily tracking. Use the web to add or configure new compounds and manage your subscription. Always consult a qualified healthcare provider before starting, changing, or stopping any protocol. IMPORTANT INFORMATION StackTrax is an informational tracking and logging tool. It is not medical advice and does not prescribe, recommend, or facilitate the purchase of any medication or compound. Many compounds tracked in StackTrax (BPC-157, TB-500, MOTS-c, sermorelin, NAD+ injection, others) are not FDA-approved for human use and are legally sold in the US only as research chemicals. We provide tracking tools and informational content; we do not endorse off-label or non-approved use. Subscriptions are managed at stacktrax.com. New users get a 14-day free Pro trial; full pricing shown at signup. Terms of Use: https://stacktrax.com/terms Privacy Policy: https://stacktrax.com/privacy

About

Bio Log

This app helps you meticulously track peptide doses, vial details, and personal notes in a centralized journal. It offers daily views, logging capabilities, and history search, with optional AI assistance for summaries and organization. Records are stored locally for your control.

Highlights
  • Schedule and dose tracking
  • Vial inventory management
  • Injection site mapping
  • Journal search and filtering
  • AI-powered note organization
  • Local data storage
  • Data export
Read full description

Keep your peptide records clear, organized, and easy to review. Bio Log brings your schedules, dose entries, vial details, and personal notes into one focused journal. SEE YOUR DAY View scheduled entries and what you’ve already recorded. Keep reminders connected to the profiles you create. LOG WHAT HAPPENED Record an entry as taken or skipped. Add the amount, time, injection site, and notes you want to keep. Review your entry before saving. Choose a recorded injection site on the front-and-back body map and see which sites appear in your recent history. FIND YOUR HISTORY Search your journal by peptide or note. Filter taken and skipped entries, review earlier records, and make corrections when needed. Remove profiles from your active library without losing their history. Restore them from Archived whenever you need them. KEEP VIAL DETAILS TOGETHER Save vial amounts, lot information, and storage notes. See remaining inventory estimates based on your saved records. ADD CONTEXT Keep symptoms, lab results, and progress photos alongside your tracking. Review summaries of your own entries. BIO LOG AI Ask questions about your journal, organize notes, and review optional AI summaries in a clean conversation view. Draft logs remain yours to review and confirm before saving. YOUR RECORDS, YOUR CONTROL Journal records are stored on your device. Export your tracking records when you need them. Optional AI features use an online service with your permission. MEMBERSHIP Download Bio Log to explore the demo. Personal tracking and the full feature set require an auto-renewing monthly Bio Log Membership. Payment is charged to your Apple Account. Your subscription renews automatically unless canceled at least 24 hours before the current period ends. Manage or cancel your subscription in App Store account settings. Bio Log is for personal tracking and organization. It does not provide medical advice, diagnosis, treatment, dosing instructions, peptide recommendations, or sourcing advice. Consult a qualified healthcare professional before making medical decisions. AI-generated summaries may be incomplete or inaccurate. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://biolog-ai-backend.vercel.app/api/privacy

Screenshots

StackTrax4 screens
Bio Log4 screens

Verdict

The call

The clearest difference is update cadence: StackTrax at daily against Bio Log's every 3 weeks. StackTrax also leads on ratings volume (8 vs 2). On price, rating, 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. StackTrax sells 2 in-app purchases, starting at $4.99 per month and Bio Log sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for StackTrax against 5.0 for Bio Log. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

UpkeepUpdate frequency

StackTrax ships an update daily, Bio Log every 3 weeks. The most recent releases landed on October 23, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
StackTrax versus Bio Log: the parameters behind the verdict, then further details
ParameterStackTraxBio Log
PriceFreeFree
Rating5.0 (8 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings8 — better2
Update frequencyDaily — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size32 MB5 MB
Age rating17+17+
DeveloperIsaiah Deutschalexander rieger

Customer experience

StackTrax

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bio Log

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

StackTrax

Subscriptions2
  • Pro Monthly14 Days trial$4.991 Month
  • Pro Yearly14 Days trial$49.991 Year
1 purchases

Bio Log

Subscriptions1
  • Bio Log Membership$3.991 Month

Questions

Is StackTrax free?
StackTrax is free to download, with in-app purchases available.
Is Bio Log free?
Bio Log is free to download, with in-app purchases available.
Which has better reviews, StackTrax or Bio Log?
StackTrax and Bio Log are both rated 5.0 out of 5 on the App Store, from 8 and 2 ratings respectively.
Do StackTrax or Bio Log have ads?
Neither StackTrax nor Bio Log shows ads.
Which is updated more often, StackTrax or Bio Log?
StackTrax ships an update daily, and Bio Log every 3 weeks. Most recently, StackTrax was updated on October 23, 2026 and Bio Log on October 31, 2026.

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