Comparison

PeptidePal vs Stackr

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

Head to head
About

PeptidePal

Features
Read full description

PeptidePal is a HIPAA-compliant patient companion app for peptide therapy and TRT clinics. Connect with your provider, track treatments, and stay on top of your health — all from one app. TREATMENT TRACKING • Log injections with dose, site, and timing • Track side effects and symptoms over time • View your full treatment history at a glance PROVIDER CONNECTION • Link directly to your clinic's provider portal • Receive treatment protocols assigned by your doctor • Secure, real-time messaging with your care team LAB RESULTS • View lab panels uploaded by your provider • AI-assisted summaries highlight key findings • Track trends across multiple lab draws SMART REMINDERS • Injection schedule reminders so you never miss a dose • Appointment notifications and follow-up alerts • Medication refill request tracking APPOINTMENTS & FORMS • View and manage upcoming appointments • Complete intake and consent forms digitally • Set and track health goals with provider guidance BUILT FOR PRIVACY • HIPAA-compliant data handling and encryption • Consent-based data sharing with your provider • Your health data stays secure and private PeptidePal requires a linked provider account. Ask your peptide therapy or TRT clinic if they use PeptidePal.

About

Stackr

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

Highlights
  • Log peptide and GLP-1 doses
  • Track vials, pens, and other supplies
  • Smart reminders for next doses
  • Home screen widgets
  • Estimated active level charts
  • Multi-peptide stack tracking
  • Reference pages for common compounds
Features
Read full description

Stackr is the all-in-one tracker for your peptide and GLP-1 protocol. Every dose, vial and meal in one place, with the math done for you. KEY FEATURES • Dose tracking and reminders Log a dose in seconds from your Home screen. Run daily, weekly, every-few-days or specific-day schedules, and several protocols at once. Reminders make sure you never miss a dose, and Home Screen widgets show what's next. • Dose calculator Enter your vial strength, water and dose, and see exactly how many units to draw on a U-100 or U-40 syringe. Works in mcg, mg, IU and units. • Supplies and vials Track vials, pens and other supplies. Stackr counts down what's left every time you log and warns you before you run out. • Progress Keep your weight, progress photos and dose history together, with a calendar of taken and missed doses and estimated active levels from your logs. • Food and calories Snap a meal, scan a barcode, search a food or just say what you ate. Stackr tracks calories and protein against your daily plan. • Stackr Coach Ask the AI coach questions about your routine and your meals, any time. • Learn Reference pages for semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, GHK-Cu and 100+ more, with research status and sources. WHY STACKR • Built for GLP-1s and peptides, from one weekly shot to a full stack • Pounds or kilograms, mcg or mg, U-100 or U-40 • Syncs across your devices when you sign in • Message the team directly from Settings Stackr is a personal tracking and educational app. It does not give medical advice, prescribe treatments or tell you which peptide, dose or schedule is right for you. Always talk to a qualified healthcare professional. Active levels and photo-based nutrition values are estimates. SUBSCRIPTION Stackr is free to download. Full access requires a paid Stackr+ subscription. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getstackr.app/privacy

Screenshots

PeptidePal4 screens
Stackr4 screens

Verdict

The call

The clearest difference is chart position: Stackr at #187 against PeptidePal's unranked. PeptidePal's advantage is device support (3 vs 1) and iOS requirement (15.5 vs 17.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PeptidePal sells 2 in-app purchases, starting at $4.99 per month and Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 8 level
PeptidePal versus Stackr: the parameters behind the verdict, then further details
ParameterPeptidePalStackr
PriceFreeFree
Rating—4.4 (225 ratings) — better
Positive reviews—67.6% of reviews
Number of ratings—225 — better
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
Best chart rank—#187 — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.5 — better17.0
Further details — not scored
Size82 MB88 MB
Age rating17+12+
DeveloperPeptidePal LLCStackr Holdings LLC

In-app purchases

2 purchases

PeptidePal

Subscriptions2
  • PeptidePal Pro Monthly$4.991 Month
  • PeptidePal Pro Annual$39.991 Year
7 purchases

Stackr

Subscriptions7
  • Stackr+ Weekly$7.997 Days
  • Monthly$12.991 Month
  • Stackr+ Yearly$29.991 Year
Show 4 more
  • Stackr+ Yearly$49.991 Year
  • Stackr+ Yearly3 Days trial$49.991 Year
  • Stackr+ Yearly$59.991 Year
  • Yearly3 Days trial$69.991 Year

Questions

Is PeptidePal free?
PeptidePal is free to download, with in-app purchases available.
Is Stackr free?
Stackr is free to download, with in-app purchases available.
Do PeptidePal or Stackr have ads?
Neither PeptidePal nor Stackr shows ads.
Which is updated more often, PeptidePal or Stackr?
PeptidePal ships an update weekly, and Stackr weekly. Most recently, PeptidePal was updated on November 5, 2026 and Stackr on November 9, 2026.

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