Best Peptide Reconstitution Calculator App: 2026 Guide
A practical comparison of the free PeptideCalc browser calculator and the paid iPhone and iPad app, based on their actual inputs, outputs, workflow features, and limitations.
Publisher disclosure
Wild Monkey Labs publishes PeptideCalc and this guide. This page explains our own products; it is not an independent review, a laboratory validation, or a head-to-head test of every calculator on the market.
Direct answer
Choose the free browser peptide calculator for quick, user-entered vial, water, dose, and syringe math. Choose the PeptideCalc iOS app if you also need saved protocols, schedule previews, reminders, dose logs, offline use, or optional iCloud sync. As reviewed on August 10, 2026, the U.S. App Store lists the iOS app as a separate $4.99 one-time purchase, not a free download.
The browser calculator applies arithmetic to the vial amount, diluent amount, and target dose you enter. In the iOS schedule editor, a titration start field that is empty or still matches the target may be prefilled to 25% of the target as an editable convenience. PeptideCalc does not determine whether a medication, dose, or schedule is clinically appropriate. Verify the source values and result with a qualified healthcare professional when they relate to care.
Free browser calculator versus $4.99 iOS app
| Question | Free browser calculator | PeptideCalc iOS app |
|---|---|---|
| Price | Free | $4.99 one-time U.S. purchase as reviewed August 10, 2026; no subscription |
| Platform | Modern web browser | iPhone and iPad |
| Core calculation | Single-vial quantity, water volume, target dose, and syringe-scale output; no blend support | Reconstitution calculations, including user-entered blends of up to four compounds, plus saved workflow data |
| Saved protocols and schedules | No | Yes, created from values you choose |
| Reminders and dose logs | No | Yes, when configured by the user |
| Offline use | Do not rely on an unloaded webpage without a connection | Supported for calculations and on-device workflows |
| Sync | No saved calculator account | Optional iCloud sync for supported app data |
See the complete current feature list on the iOS app page, or check the price and device requirements on the official Apple App Store listing.
What the browser calculator actually calculates
The browser tool accepts a vial quantity in milligrams, water volume in milliliters, a user-selected target dose in milligrams or micrograms, and a syringe scale. It converts micrograms to milligrams before applying these formulas:
concentration (mg/mL) = vial quantity (mg) ÷ water volume (mL)
draw volume (mL) = target dose (mg) ÷ concentration (mg/mL)
syringe units = draw volume (mL) ÷ mL per marked unit
The browser offers 0.3 mL/30-unit, 0.5 mL/50-unit, and 1.0 mL/100-unit syringe-scale choices. Those three scales each work out to 0.01 mL per marked unit.
Checkable arithmetic example
Suppose a user enters 10 mg for the vial, 2 mL for the water volume, and 500 mcg (0.5 mg) for the target dose. The calculator performs this arithmetic:
- 10 mg ÷ 2 mL = 5 mg/mL concentration.
- 0.5 mg ÷ 5 mg/mL = 0.1 mL draw volume.
- 0.1 mL ÷ 0.01 mL per unit = 10 units on the selected scale.
These numbers demonstrate the formula only. They are not suggested inputs or a dose recommendation. If a calculated volume exceeds the capacity of the selected syringe, do not treat an end-of-scale marker as confirmation that the entry is appropriate; stop and independently verify the inputs, units, equipment, and math.
How to evaluate any peptide calculator
A useful calculator should make each of these points easy to verify:
- Inputs: Does it label vial mass, liquid volume, target dose, and syringe scale clearly?
- Units: Does it show when milligrams, micrograms, milliliters, or syringe units are being used?
- Checkable math: Can you reproduce the result with the concentration and draw-volume formulas above?
- Limits: Does the workflow help you notice missing, impossible, or out-of-range entries before relying on a result?
- Workflow fit: Do you need a one-off calculation, or saved records, schedules, reminders, and logs?
- Privacy: Does the publisher explain analytics, diagnostics, local storage, and optional cloud services in plain language?
When another tool may be a better fit
PeptideCalc may not be the best choice if you need Android support, an independently audited calculation system, integration with a clinical record system, or software approved by your organization. A spreadsheet can also be appropriate when you need a transparent custom model and have a separate review process for formulas and data entry.
Privacy and analytics
PeptideCalc includes analytics and should not be described as tracking-free. The website uses self-hosted, cookieless analytics for aggregate visits and fixed interaction events. Values entered into the website calculator are processed in the browser and are not sent in analytics events. The iOS app uses limited analytics, crash reporting, and Apple diagnostic services. Core records use local app storage by default, while optional iCloud sync, Apple device backups, and user-created backups or exports can move supported data outside that local container. Read the PeptideCalc privacy policy for the full disclosure and available controls.
Frequently asked questions
What is the best peptide reconstitution calculator?
The best calculator depends on the job. PeptideCalc offers a free browser calculator for one-off, user-entered reconstitution math and a $4.99 one-time iOS app for people who also want saved protocols, schedule previews, reminders, logs, offline use, and optional iCloud sync. Wild Monkey Labs publishes PeptideCalc and this guide, so this is a product guide rather than an independent ranking.
Is PeptideCalc free?
The browser calculator at peptidecalc.io/peptide-calculator is free. As reviewed on August 17, 2026, the native iPhone and iPad app is a separate $4.99 one-time purchase on the U.S. App Store, with no subscription. Prices can vary by region or change, so check the official listing.
Does PeptideCalc decide how much water or medication to use?
The browser calculator uses the vial amount, diluent amount, and target dose a user enters. In the iOS schedule editor, a titration start field that is empty or still matches the target may be prefilled to 25% of the target as an editable convenience. PeptideCalc does not determine whether any medication, dose, or schedule is clinically appropriate.
Can the PeptideCalc iOS app work offline?
Yes. The native iOS app supports offline calculations and on-device workflows. Optional iCloud sync requires Apple services when enabled.
Does PeptideCalc use analytics?
Yes. The website uses self-hosted, cookieless aggregate analytics, while the iOS app uses limited analytics and crash diagnostics. Calculator values entered on the website are processed in the browser and are not included in analytics events. The privacy policy explains the details and available controls.
Choose the workflow you need
Run a free calculation in your browser, or review the separate $4.99 iOS app before purchasing.