NICU Fluids
Medical
Free · Designed for iPad. Not verified for macOS.
Electrolytes, GIR, and FENa in one clean NICU calculator. Add drips as you go, see Na, Cl, K, acetate, and fluids live, and get a plain-language FENa read.
NICU Fluids is a fast, clean set of calculators for clinicians managing intravenous fluids in neonates and children. Three tools, one tap apart.
Electrolytes
Enter the patient's weight, then add each drip with its dextrose, rate, NaCl, NaAcetate, and K. Results update as you type: GIR in mg/kg/min, total fluids in mL/kg/day, and sodium, chloride, acetate, and potassium in mEq/kg/day. Turn on calcium and magnesium for two more columns with gluconate and sulfate equivalents. Presets follow whichever field you're in, so NS, ½NS, ¼NS, and the acetate strengths are one tap away. Start with a single drip and add up to six.
GIR
A dedicated glucose infusion rate screen for when that's all you need. Up to eight drips, dextrose presets, and a solver that takes a target GIR and concentration and gives you the mL/hr, with the option to account for drips already running.
FENa
Enter serum and urine sodium and creatinine to get fractional excretion of sodium, with a plain-language interpretation. Switch between neonate and child/adult thresholds, since term neonates run higher at baseline, and see a reminder about diuretics and preterm variability.
Also included
-Results rounded to two decimal places, shown in blue so nothing reads as an abnormal flag
-Light and dark themes, eight accent colors, fourteen font choices, and adjustable text size
-No account, no ads, no data collection. Everything stays on your device.
Formulas
GIR (mg/kg/min) = Σ (% dextrose × mL/hr) ÷ (6 × weight in kg)
Total fluids (mL/kg/day) = Σ mL/hr × 24 ÷ weight in kg
Electrolyte (mEq/kg/day) = mEq/L × mL/hr × 24 ÷ 1000 ÷ weight in kg
FENa (%) = (UNa × PCr) ÷ (PNa × UCr) × 100
NICU Fluids is a calculation aid for licensed healthcare professionals and does not replace clinical judgment, institutional protocols, or verification of orders.
NICU Fluids is back, rebuilt from the ground up for iOS 26.
Three calculators in a tab bar: Electrolytes, GIR, and FENa
Results update as you type, no Calculate button
Add drips only as you need them
One-tap presets for dextrose, saline (NS, ½NS, ¼NS), acetate, and potassium
Optional calcium and magnesium per drip
GIR solver: enter a target and get the rate
FENa interpretation with neonate and child/adult thresholds
Light and dark themes, accent colors, fonts, and text sizes
Refreshed design with cards and Liquid Glass
Note: GIR is now calculated with the exact conversion (÷ 6) rather than the rounded 0.167 factor, so values may differ from the previous version by a hundredth or two.
The developer, Atlas Software Solutions LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Atlas Software Solutions LLC
- Size
- 3.9 MB
- Category
- Medical
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Atlas Software Solutions, LLC