Comparison

Vialmetry vs Stax

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

Head to head
About

Vialmetry

Features
Read full description

Vialmetry is a private logbook for the vials you already have. Record what is in each vial, convert your own numbers into syringe units, log each injection and rotate your sites. Your log stays on your device, works offline and needs no account. BUILT AROUND THE VIAL • Record each vial's strength, the water you added, the date it was mixed, its beyond-use window and what it cost. • See what remains as you log, with every vial kept separate. • Add an optional lot number, source, storage note and comments. ARITHMETIC YOU CAN CHECK • Enter the vial strength, the water you added and the amount you have already decided on. Vialmetry converts it into a syringe mark and shows the concentration, volume and units on screen. • Work backwards from a mark you can read to the water to add. • Every input and unit stays visible, so you can check the working by hand. • Vialmetry never suggests what or how much to take. LOG AND ROTATE • Log an injection in a few taps: amount, time, site and notes. • A front and back body map shows which subcutaneous sites have rested, based on the rest period you set. • Note soreness, redness or other site reactions. • Edit, skip or delete entries. Each vial's remaining amount stays in step with your history. SCHEDULES AND REMINDERS • Record the schedule you follow: daily, every few days, weekly or on chosen weekdays, with optional on and off weeks. • Optional reminders are scheduled by your phone. By default the lock screen shows only "Scheduled reminder". COST • Keep what each vial cost alongside your log and see your spending over time. SUMMARY AND EXPORT • Create a printable summary to share with your healthcare provider. • Export your history as a spreadsheet, or a complete backup file, at any time. PRIVATE BY DESIGN • Local-first. Your log lives on your device. • No ads, no analytics, no tracking. • Optional Face ID or biometric app lock. • Optional private cloud copy for moving your log between your own devices. It is created only when you tap Save to cloud, and you can delete your account in the app at any time. MADE TO BE CALM • Three palettes, light and dark appearance, and a clear, uncluttered layout. IMPORTANT Vialmetry is for personal tracking and educational purposes only. It is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. It does not provide medical advice, diagnosis or treatment. It does not recommend medications, doses or schedules, and it does not determine whether any dose is appropriate. Calculations only convert the numbers you enter; check them yourself. Always consult a licensed healthcare provider. The presence of a substance name in the app is not an endorsement and does not mean the substance is approved for human use. Website and help: https://vialmetry.app Privacy policy: https://vialmetry.app/privacy/ Support: info@vialmetry.app

About

Stax

Automate your peptide routine with daily tracking, vial countdowns, and injection spot rotation. Log doses, supplements, and track progress with a shareable doctor's report. Designed for privacy with no account required.

Highlights
  • Automated peptide routine tracking
  • Vial and supply countdowns
  • Injection spot rotation
  • Supplement organizer
  • Shareable doctor's report
  • Private by design, no account needed
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

Vialmetry4 screens
Stax4 screens

Verdict

The call

The clearest difference is in-app purchases: Vialmetry at none against Stax's 4. Stax's advantage is ratings volume (11 vs 1). On price, rating, update cadence and ads 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. Stax sells 4 in-app purchases, starting at $6.99 per month. Vialmetry asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Vialmetry against 5.0 for Stax. That said, the two scores are not equally well evidenced: Stax has 11 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
Vialmetry versus Stax: the parameters behind the verdict, then further details
ParameterVialmetryStax
PriceFreeFree
Rating5.0 (1 ratings)5.0 (11 ratings)
Positive reviews—100.0% of reviews
Number of ratings111 — better
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad — betteriPhone
Requires iOS16.416.4
Further details — not scored
Size44 MB64 MB
Age rating17+17+
DeveloperCrestwood Holdings Management LLCFARSHID ORAK

In-app purchases

None

Vialmetry

No in-app purchases

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 Vialmetry free?
Vialmetry is free to download, with no in-app purchases.
Is Stax free?
Stax is free to download, with in-app purchases available.
Which has better reviews, Vialmetry or Stax?
Vialmetry and Stax are both rated 5.0 out of 5 on the App Store, from 1 and 11 ratings respectively.
Do Vialmetry or Stax have ads?
Neither Vialmetry nor Stax shows ads.
Which is updated more often, Vialmetry or Stax?
Vialmetry ships an update every 2 days, and Stax every 2 days. Most recently, Vialmetry was updated on October 31, 2026 and Stax on October 31, 2026.

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