Comparison

Polypep vs Stax

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

Head to head
About

Polypep

Features
Read full description

Keep your peptide dose log, vial inventory and protocol schedules together with Polypep. Track your routines and explore educational reference material in one place. LOG EVERY DOSE Record the peptide, amount, injection site and time. Review doses, notes, side effects and biomarker readings on your Journey timeline. KNOW YOUR STOCK Track vials and powder lots, record reconstitution and see how long your supply may last. Logging a dose updates the vial it came from. ORGANIZE YOUR PROTOCOLS Use a preset or create your own protocol. See your planned doses in daily, weekly and monthly schedules, with reminders and a history you can backfill. LEARN AND FOLLOW TRENDS Browse peptide reference cards and guides covering reconstitution, storage, syringe units and bloodwork. Log biomarkers and view their trends alongside your records. Educational reference only. OPTIONAL ACCOUNT AND COACH Use the app without an account, or sign in to sync your personal records privately across your own devices. Browse and share community protocol recipes. Ultimate adds Coach, an optional AI assistant for educational arithmetic, stock checks and organizing records. You control which tools it can use. When you use Coach, your messages and results from enabled tools are sent to a third-party AI provider. Writes ask for approval by default. FREE, PRO AND ULTIMATE Free includes dose logging, catalog browsing and one active protocol. Pro adds stock, custom peptides and protocols, unlimited active protocols, full reference entries, guides, schedules, Journey, biomarkers and side-effect logging. Ultimate includes Pro and Coach. EDUCATIONAL ONLY Polypep does not provide medical advice, diagnosis or treatment. Many compounds referenced are research chemicals or prescription-only medicines. Consult a licensed clinician before starting, changing or stopping any compound. Paid subscriptions renew until cancelled and are managed through your App Store account. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getpolypep.com/legal

About

Stax

Easily log peptide shots, track your custom plan, and monitor your consistency. This private tool stores all data locally on your device, offering reminders and progress charts without requiring an account or internet connection.

Highlights
  • Log shots in seconds
  • Customizable daily/weekly plans
  • Private, local data storage
  • Undercover reminders
  • Daily, weekly, monthly progress charts
  • Edit/delete logged entries
Features
Read full description

Set your plan once. Every day, Stax shows what's due and you tap it done. That's the whole habit. Stax keeps your peptide routine on autopilot: doses, days, dose changes, phases and cycles, vials counting down, injection spots rotating, and a two-page report your doctor can read. Everything stays on your phone. No account, nothing to sign up for. PLAN IT ONCE - Enter your own plan: which peptide, which days, how much. - Every day, chosen weekdays, or every few days. - Dose changes on the day your plan says, week by week. - Phases that start when the last one ends; off-cycles when you need a break. - See the week ahead: tap any day to see what's planned. TAP IT DONE - Today's plan, nothing else. One tap per shot. - Took a different amount? Change it for that one shot without touching the plan. - Log an off-plan shot in two taps: amount, spot, done. Units, mg, mcg or IU. - Stax remembers the unit you usually log in and suggests names as you type. VIALS AND SUPPLIES - Add a vial and watch it count down as you log. - Know the day it runs out, before you're dry. - Syringes and alcohol pads can count down too. - Reconstitution worked out: vial, water, dose, to a mark on the syringe. INJECTION SPOTS - A body map remembers where the last one went. - Today, this week or this month at a glance. SEE YOUR PROGRESS - Every shot, day by day, per peptide. - Streaks, totals and charts; daily, weekly, monthly. - A quick daily check-in for energy, sleep and focus. PILLS AND VITAMINS, TOO - An organizer for the rest of your stack: morning, midday, evening, bed. - Scan a label to add a supplement. Nutrients add up as % of daily value, week by week. - Peptides stay front and center. A REPORT YOUR DOCTOR CAN READ - Two pages: shots day by day, doses and vials, injection spots, how you felt, supplements. - Made on your phone from what you logged. Share it only when you choose. WORKING WITH A CLINIC? - If your clinic uses Stax for clinics, they can send your plan to your phone and keep it up to date, and you can share your report back with a tap. REMINDERS THAT KEEP YOUR SECRET - One nudge on days your plan still has something left. - Playful and undercover: never names a peptide, never mentions injections or doses. PRIVATE BY DESIGN - No account, no sign-up, no ads, no tracking. - Your log, plan and settings are stored only on your device. - Deleting the app deletes everything. AND THERE IS STAX Stax is the purple dot who watches where you tap, gets excited while you type, and cheers when you log. Tracking should not feel like a chore. STAX PLUS Start with 14 days of everything, free. No card needed and nothing renews. After that, keep Stax Plus with a monthly or annual subscription or a one-time lifetime purchase, or keep using the free version (2 logs a day, reminders and progress). Stax Plus includes unlimited logging, your plan, supply and inventory tracking, and the doctor report. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID at confirmation of purchase, and renewals are charged within 24 hours before the end of each period. Manage or cancel any time in Settings > Apple ID > Subscriptions. IMPORTANT Stax is a personal tracking tool, not medical advice. It does not recommend, diagnose or treat anything, and it does not suggest peptides, amounts or schedules. Everything in the app is entered by you. Talk to a qualified healthcare professional about your treatment. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://staxtrack.com/privacy-policy

Screenshots

Polypep4 screens
Stax4 screens

Verdict

The call

The clearest difference is ads: Stax at none against Polypep's shown. On price, update cadence, in-app purchases 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. Polypep sells 4 in-app purchases, starting at $6.99 per month and Stax sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Polypep ships an update every 3 days, Stax every 2 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 9 level
Polypep versus Stax: the parameters behind the verdict, then further details
ParameterPolypepStax
PriceFreeFree
Rating—5.0 (11 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—11 — better
Update frequencyEvery 3 daysEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size71 MB55 MB
Age rating12+17+
DeveloperDal RupnikFARSHID ORAK

In-app purchases

4 purchases

Polypep

Subscriptions4
  • Pro Monthly3 Days trial$6.991 Month
  • Ultimate Monthly3 Days trial$14.991 Month
  • Pro Yearly7 Days trial$49.991 Year
Show 1 more
  • Ultimate Yearly7 Days trial$99.991 Year
4 purchases

Stax

Subscriptions2
  • Stax Plus Monthly$6.991 Month
  • Stax Plus Annual$59.991 Year
One-time2
  • 14-day TrialFree
  • Stax Plus Lifetime$149.99

Questions

Is Polypep free?
Polypep is free to download, with in-app purchases available.
Is Stax free?
Stax is free to download, with in-app purchases available.
Do Polypep or Stax have ads?
Polypep shows ads; Stax does not.
Which is updated more often, Polypep or Stax?
Polypep ships an update every 3 days, and Stax every 2 days. Most recently, Polypep was updated on October 28, 2026 and Stax on October 29, 2026.

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