Comparison

Peptide Tracker vs VialRhythm

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 simplifies peptide use by calculating accurate dosages, tracking injections, and setting reminders for consistency. Manage multiple peptides and review your history with a clear and reliable interface.

Highlights
  • Smart peptide calculator for accurate dosing
  • Log and track peptide injections
  • Set reminders for consistency
  • Review injection and dosage history
  • Manage multiple peptides
  • Designed for clarity and reliability
Features
Read full description

IMPORTANT: PepSync is a personal tracking tool. It does not calculate or recommend doses and is not medical advice. Always follow your prescriber's instructions. Track every peptide and GLP-1 dose in one place. Get reminders on time, rotate injection sites and see your progress week by week. Features: - Log doses in a tap and keep a complete history - Reminders for every scheduled dose, with snooze and catch-up - Injection site rotation with a body map - Vial and supply tracking with restock reminders - Weight and check-ins to see how you're progressing - Manage multiple peptides and schedules in one place - Export a PDF summary to share with your clinician You enter the dose you've been prescribed. PepSync records it, reminds you when it's due and keeps your history. SUPPORT - Contact: https://www.muchadostudio.com/contact THIS APP REQUIRES A SUBSCRIPTION TO ACCESS CERTAIN FEATURES - Terms: https://peptidecalcs.com/terms

About

VialRhythm

Organize your entries, view your schedule, and maintain a history with this local-first app. Features include customizable themes, a calculator for transparent arithmetic, and iPhone-specific integrations like widgets and Face ID lock.

Highlights
  • Local-first scheduling and record-keeping
  • Day-at-a-glance schedule view
  • Mark entries as completed, skipped, or missed
  • Customizable themes
  • Transparent arithmetic calculator
  • iPhone-specific features (widgets, Face ID)
Read full description

VialRhythm is a private, local-first schedule and record-keeping app for iPhone. Organize your own entries, see what is next, and keep a clear history without a required account. YOUR DAY AT A GLANCE See today’s schedule, mark an entry completed, skipped, or missed, and edit saved details whenever plans change. BUILT FOR IPHONE • Local notifications for schedules you create • Face ID or passcode app lock • Home Screen widget for the next saved entry • App Shortcuts for fast navigation and completion • Apple Calendar export • Native offline launch • Local JSON backup and restore MAKE IT YOURS Choose from Evergreen Ivory, Midnight Slate, and Coastal Sage themes. CUSTOM CYCLE TRACKING Add your own weeks-on and weeks-off cycle to daily, weekday, or interval schedules. Calendar indicators and entry badges make each phase visible. OFF weeks do not create doses, missed entries, or local reminders. VialRhythm does not recommend cycle lengths or protocols. PEPTIDE KNOWLEDGE Browse searchable, plain-language educational snapshots covering main body roles, approved uses, and popular research goals. Research entries are clearly labeled and the library does not provide buying, mixing, dosing, or treatment directions. TRANSPARENT ARITHMETIC The optional calculator shows every user-entered input, unit conversion, and formula. It does not recommend or verify a dose. VialRhythm is an informational, organizational, and arithmetic tool for research record-keeping purposes only. It does not provide medical advice, diagnosis, treatment, prescribing, dosage recommendations, or safety verification. Verify all information with a licensed physician or pharmacist.

Screenshots

Peptide Tracker4 screens
VialRhythm4 screens

Verdict

The call

The clearest difference is in-app purchases: VialRhythm at none against Peptide Tracker's 12. VialRhythm also leads on ads (none vs shown) and update cadence (daily vs weekly). Peptide Tracker's advantage is ratings volume (114 vs 5). On price, device support and iOS requirement 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. Peptide Tracker sells 12 in-app purchases, starting at $7.99 per 7 days. VialRhythm asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

VialRhythm holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Peptide Tracker has 114 ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Peptide Tracker ships an update weekly, VialRhythm daily. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 4 level
Peptide Tracker versus VialRhythm: the parameters behind the verdict, then further details
ParameterPeptide TrackerVialRhythm
PriceFreeFree
Rating4.8 (114 ratings)5.0 (5 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings114 — better5
Update frequencyWeeklyDaily — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone
Requires iOS18.017.0 — better
Further details — not scored
Size41 MB5 MB
Age rating12+17+
DeveloperThomas StrathernMarc Dela Cruz

Customer experience

Peptide Tracker

All ratings114 ratings
Positive95.6%
Neutral0.0%
Negative4.4%
Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

VialRhythm

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

12 purchases

Peptide Tracker

Subscriptions10
  • Premium Weekly3 Days trial$7.997 Days
  • Premium Weekly$7.997 Days
  • PepSync Weekly$7.997 Days
Show 7 more
  • Premium Annual - Deal$39.991 Year
  • PepSync Yearly - 3 day trial3 Days trial$59.991 Year
  • PepSync Yearly - 7 day trial7 Days trial$59.991 Year
  • Premium Yearly7 Days trial$59.991 Year
  • Premium Annual$59.991 Year
  • Premium Annual - 3 Day Trial3 Days trial$59.991 Year
  • Premium Annual - 30 Day Trial1 Month trial$59.991 Year
One-time2
  • Premium Lifetime$39.99
  • PepSync Lifetime$59.99
None

VialRhythm

No in-app purchases

Questions

Is Peptide Tracker free?
Peptide Tracker is free to download, with in-app purchases available.
Is VialRhythm free?
VialRhythm is free to download, with no in-app purchases.
Which has better reviews, Peptide Tracker or VialRhythm?
VialRhythm is rated higher. Peptide Tracker averages 4.8 out of 5 from 114 ratings, while VialRhythm averages 5.0 from 5 ratings.
Do Peptide Tracker or VialRhythm have ads?
Peptide Tracker shows ads; VialRhythm does not.
Which is updated more often, Peptide Tracker or VialRhythm?
Peptide Tracker ships an update weekly, and VialRhythm daily. Most recently, Peptide Tracker was updated on October 19, 2026 and VialRhythm on October 13, 2026.

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