Comparison

Peptide Tracker vs Trajectory

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

Head to head
About

Peptide Tracker

This app helps you privately log and calculate doses for peptides and GLP-1 therapies. It features a reconstitution calculator, dose log, vial tracking, scheduling with reminders, and a searchable catalog of common substances. All data is stored locally on your device.

Highlights
  • Reconstitution calculator
  • Private dose logging
  • Vial tracking with expiry alerts
  • Dose scheduling and reminders
  • Searchable peptide catalog
  • Offline functionality
  • Data export (CSV/JSON)
Features
Read full description

Peptide Tracker is a private logbook and arithmetic dosing calculator for peptides and GLP-1 therapies used under the direction of a licensed healthcare provider. No account. No sign-in. No analytics. Everything you enter stays on your device. RECONSTITUTION CALCULATOR Enter your vial strength, the volume of bacteriostatic water you added, your syringe type, and the dose your provider directed. You get the resulting concentration in mg/mL, the volume to draw, the mark to fill to on the syringe, and how many doses the vial holds. It is arithmetic on the numbers you enter — nothing more. It does not recommend a dose. DOSE LOG Record what you took and when: substance, amount, unit (mg, mcg, IU or mL), route, and any notes. Your recent doses stay one tap away. VIALS Track each vial's remaining amount, concentration and expiry date. Logging a dose from a vial decrements it automatically, so the amount you see is the amount that is actually left. Vials are flagged in the app as they approach expiry, run empty, or expire. SCHEDULE Keep your planned cadence in one place — daily, every N days, specific days of the week, or on/off cycles — and get a reminder when a dose is due. SEARCHABLE CATALOG Common GLP-1 and provider-directed peptides, searchable by name or by the other names you may know them by. Add your own entries at any time. Research peptides are hidden by default and can be turned on in Settings. PRIVATE BY DESIGN - No account and no sign-in. - No analytics and no tracking. - Works fully offline. - Export everything you have entered as CSV or JSON whenever you want. IMPORTANT Peptide Tracker is a record-keeping and calculation tool. It is not medical advice and does not diagnose, treat, cure, or recommend any dose or substance. It does not sell, source, or link to any product. Always follow the instructions of your licensed healthcare provider, and use only the substances and protocols your provider directs.

About

Trajectory

Read full description

Trajectory focuses on long-term direction instead of daily noise, so you can stay consistent without overreacting. TRACK YOUR WEIGHT EFFORTLESSLY • Log your weight in seconds • Supports kg and lbs • Full history STAY ON COURSE • Set a target weight and deadline • See your personal trajectory line • Know exactly where you should be today UNDERSTAND YOUR BODY • BMI tracking with instant feedback • 7-day trend to spot momentum • Progress toward your goal CLEAN & FOCUSED • No subscriptions. Free. • Beautiful chart that tells the whole story Trajectory doesn't judge. It doesn't nag. It just shows you the path, and whether you're on it.

Screenshots

Peptide Tracker4 screens

Verdict

The call

The clearest difference is device support: Peptide Tracker at 2 against Trajectory's —. Peptide Tracker also leads on iOS requirement (15.0 vs 18.5). On price 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 8 level
Peptide Tracker versus Trajectory: the parameters behind the verdict, then further details
ParameterPeptide TrackerTrajectory
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 6 weeks—
AdsNo—
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod — better—
Requires iOS15.0 — better18.5
Further details — not scored
Size4 MB2 MB
Age rating+1717+
DeveloperShred Apps, LLCMathieu Bonte

In-app purchases

None

Peptide Tracker

No in-app purchases

None

Trajectory

No in-app purchases

Questions

Is Peptide Tracker free?
Peptide Tracker is free to download, with no in-app purchases.
Is Trajectory free?
Trajectory is free to download, with no in-app purchases.

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