Peptide calculator app
With vial strength, water volume and prescribed dose, phone apps and browser tools calculate syringe units; tracker apps add reminders and logs.
- apps in this comparison
- 4
- Every one is available to download
- Free
A peptide calculator app converts your vial's dry powder weight and added water into syringe units for your dose. Although most phone app store options track injection dates and send reminders, your mobile browser can also handle the same unit math. Your prescriber determines your dose; a calculator merely converts that number to syringe units.
What does a peptide calculator app do?
Reconstitution means combining dry peptide powder with liquid so that you can draw it into a syringe; these tools handle that process. Enter how many milligrams are in your vial, how much water you added in milliliters and the dose prescribed by your prescriber. The software then tells you how many units to draw into a syringe.
Some apps concentrate on unit math, while others also provide dose logs and schedule alerts. You can download all 4 mobile apps listed here for free; each offers in-app purchases.
| App | Works on | Price | What it does |
|---|---|---|---|
| iPhone, iPad, Android | Free with in-app purchases | Reconstitution calculator that also logs your doses. | |
| iPhone | Free with in-app purchases | Injection dose log with reminders and a calculator. | |
| Android | Free with in-app purchases | Reconstitution and syringe units calculator. | |
| iPhone, iPad | Free with in-app purchases | Dose log for vials with reminders. |

Apps used by people
We neither rank nor endorse this software. Phone stores offer these 4 options to people using iPhone, iPad and Android.
You can use Peptides Calculator by Sphnix on iPhone, iPad and Android. It combines a reconstitution calculator with dose tracking and is free with in-app purchases.
For iPhone, Peptide Tracker: PepFlow is free with in-app purchases. An injection dose log with reminders is the main feature, with a dose calculator included alongside it.
For Android devices, Peptide Calculator App by Wallet Passes Alliance is free with in-app purchases. The app places its focus on reconstitution math and syringe units.
You can use Heat Studio's Peptide Tracker & Dosage on iPhone and iPad for free, with in-app purchases. Scheduled reminders accompany its dose log for vials.
Apps for tracking peptides
If you'd like schedule alerts on your phone, the apps PepFlow and Heat Studio log each injection and send reminders; Sphnix also tracks doses. A record helps you when rotating injection sites or stepping up a weekly schedule.
We also recommend recording each vial's mixing date in your log. As CDC injection safety guidance states, record the opening date on a multiple-dose vial. Unless the manufacturer supplies another date, discard it within 28 days. Its discard date may not be later than the original expiration date printed on the vial.
When does a web calculator on your phone handle everything you need?
You don't need an app store account if you only want to check syringe units at the kitchen counter. Our free dose calculator requires no download and no account. You can use it through your phone browser, add it to your home screen and treat it as an app.
If your vial and dose remain unchanged each week, the unit mark stays the same for every draw. You can check your numbers with our reconstitution calculator and save a printable peptide units card for your supplies.
Things to check in any app
Make sure the math agrees with your supplies by checking 3 settings on the screen before drawing. Make sure your syringe uses the U-100 scale, meaning 100 units per 1 mL. You should also check how to read it; the method depends on your barrel size.
Check if the dose box wants milligrams or mcg, which means micrograms; 1,000 mcg equals 1 mg. Last, make sure the vial milligrams and water milliliters shown on screen match the label you are holding.
Questions people often ask
Is there a free peptide calculator app?
Sphnix, PepFlow, Wallet Passes Alliance and Heat Studio provide all 4 store apps. Each one is free to download, though each includes paid in-app purchases. When you need a tool that has no upgrades or fees, you can use a completely free browser calculator.
Is there a peptide calculator app for Android?
Yes, Android users have 2 options on the list. With Peptides Calculator by Sphnix, you get reconstitution calculations and dose tracking. Wallet Passes Alliance's Peptide Calculator App calculates reconstitution amounts and syringe units.
Is an app required to calculate my dose?
You don't have to install anything on your phone. For a mixed vial and a prescribed dose, the unit mark stays the same each time you withdraw that dose.