Comparison

PeptIQ vs Stackr

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

Head to head
About

PeptIQ

This app helps users meticulously log peptide injections, manage custom treatment plans, and monitor injection site rotation. It also tracks inventory, provides wellness insights, and offers an educational peptide library, all while prioritizing user privacy with local data storage.

Highlights
  • Log peptide injections with dosing and site tracking
  • Build custom protocols with flexible schedules
  • Monitor injection site rotation
  • Track inventory and vial amounts
  • Visualize wellness trends
  • Educational peptide library
  • Privacy-first local data storage
Features
Read full description

PeptIQ is a simple, private tracker for your peptide routine. Log doses, follow your protocol, keep vials and pens organized, and see your health data next to your log, all in one clean app. PeptIQ is a tracking and education tool. It does not sell or source peptides, list vendors, or give medical advice. A FRESH NEW LOOK • Today shows what is up next, with one tap to log or skip • A simple bottom bar: Today, Plan, AI, Learn and Health • Light and dark themes LOG DOSES IN SECONDS • Log amount, time, route and site in a couple of taps • Mark doses done, skipped or missed • Streaks and history keep you consistent • Rotate sites on a body map FOLLOW YOUR PROTOCOL • Daily, weekly, cycling or custom schedules • Reminders for upcoming doses • Pause and resume anytime • Calendar view of everything that is planned VIALS, PENS AND INVENTORY • Track vials on hand, amount left, low stock and expiration • Pen tracking in clicks • Purchase details on each vial: price, lot, date and cost per dose • Mixing math: enter your vial size, water and amount to see concentration and syringe units for the values you enter AI THAT KNOWS YOUR LOG • Ask questions about your own routine and history • Get help organizing a protocol you already have • Educational answers only, not a clinician HEALTH DATA IN ONE PLACE • Connect Apple Health and Oura to see sleep, HRV, steps and weight next to your log • WHOOP beta (limited seats) • Upload bloodwork and keep lab results in one timeline • Half-life charts show modeled activity based on your logged entries LEARN AND CONNECT • Educational library and glossary • Community to share progress and ask questions PRIVACY FIRST • Keep your data on your device, or sync across your own devices • We do not sell personal or health data PEPTIQ PREMIUM Some features need a PeptIQ Premium subscription. Prices are shown in the app before you subscribe. Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://peptiq.io/terms Privacy Policy: https://peptiq.io/privacy Help Center: https://peptiq.io/help PeptIQ does not provide medical advice, diagnosis or treatment and does not recommend doses. Talk to a qualified clinician about your own care.

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

PeptIQ4 screens
Stackr4 screens

Verdict

The call

The clearest difference is ads: Stackr at none against PeptIQ's shown. PeptIQ's advantage is rating (4.7 vs 4.4) and ratings volume (944 vs 174). On price, review sentiment, update cadence 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. PeptIQ sells 12 in-app purchases, starting at $9.99 per 7 days 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.

ReceptionRating · Positive reviews · Number of ratings

PeptIQ holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: PeptIQ has 944 ratings behind it against 174, so its average is the more settled of the two. Written reviews complicate that: 62% of PeptIQ's written reviews are positive against 67% of Stackr's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. Both last shipped on October 18, 2026.

Scorecard3 real differences · 7 level
PeptIQ versus Stackr: the parameters behind the verdict, then further details
ParameterPeptIQStackr
PriceFreeFree
Rating4.7 (944 ratings) — better4.4 (174 ratings)
Positive reviews61.7% of reviews66.7% of reviews — better
Number of ratings944 — better174
Update frequencyEvery 4 daysEvery 4 days
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size148 MB88 MB
Age rating4+12+
DeveloperKris ChaseStackr Holdings LLC

Customer experience

PeptIQ

All ratings944 ratings
Positive91.2%
Neutral5.6%
Negative3.2%
Written reviews60 reviews
Positive61.7%
Neutral10.0%
Negative28.3%

Stackr

All ratings174 ratings
Positive87.4%
Neutral1.1%
Negative11.5%
Written reviews30 reviews
Positive66.7%
Neutral3.3%
Negative30.0%

In-app purchases

12 purchases

PeptIQ

Subscriptions11
  • Premium Weekly$9.997 Days
  • PeptIQ Premium Monthly$19.991 Month
  • Premium Monthly $24.99$24.991 Month
Show 8 more
  • PeptIQ Premium Annual 50% Off$49.991 Year
  • PeptIQ Premium Annual (50% Off)7 Days trial$49.991 Year
  • Premium Yearly $79.99$79.991 Year
  • PeptIQ Premium Annual July4$82.001 Year
  • PeptIQ Premium Yearly7 Days trial$99.001 Year
  • Premium Annual $99 Trial7 Days trial$99.001 Year
  • Premium Annual $99$99.001 Year
  • Premium Annual $129.993 Days trial$129.991 Year
One-time1
  • Premium Lifetime$299.99
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 PeptIQ free?
PeptIQ is free to download, with in-app purchases available.
Is Stackr free?
Stackr is free to download, with in-app purchases available.
Which has better reviews, PeptIQ or Stackr?
PeptIQ is rated higher. PeptIQ averages 4.7 out of 5 from 944 ratings, while Stackr averages 4.4 from 174 ratings.
Do PeptIQ or Stackr have ads?
PeptIQ shows ads; Stackr does not.
Which is updated more often, PeptIQ or Stackr?
PeptIQ ships an update every 4 days, and Stackr every 4 days. Most recently, PeptIQ was updated on October 18, 2026 and Stackr on October 18, 2026.

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