Comparison

NICU Fluids vs UmbiCalc

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

Head to head
About

NICU Fluids

This medical calculator helps healthcare professionals quickly and accurately compute IV fluid rates, glucose infusion rates, and electrolyte levels for neonates. It's designed for nurses, students, and physicians caring for critically ill infants.

Highlights
  • GIR calculator (single or multiple drips)
  • Electrolyte calculator (single or multiple drips)
  • FENa calculator
  • Accurate calculations for neonates
  • Developed by a neonatal-perinatal fellow
Features
Read full description

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.

About

UmbiCalc

This medical app estimates umbilical catheter insertion lengths for neonates based on birth weight. It utilizes an algorithm derived from statistical modeling and is intended for educational use by healthcare professionals. Always consult a medical provider for health advice.

Highlights
  • Umbilical arterial catheter estimation
  • Umbilical venous catheter estimation
  • Birth weight-based calculations
  • Based on published algorithm
  • For educational purposes
Read full description

This app provides the birth weight-based insertion length estimations for umbilical arterial and venous catheters placed in neonates in the Neonatal Intensive Care Unit. UmbiCalc is based on the algorithm described by Tambasco et al. in “A Novel and Accurate Method for Estimating Umbilical Arterial and Venous Catheter Insertion Length.” Journal of Perinatology 2021. The algorithm was derived from statistical modeling using a representative sample of the current NICU population and validated across a wide range of birth weights. Intended for use by neonatologists, pediatricians, and advanced practice providers for personal educational purposes only. It is not intended for use in clinical practice or the delivery of medical care. Always consult with a healthcare provider for advice concerning your health.

Screenshots

NICU Fluids3 screens
UmbiCalc3 screens

Verdict

The call

The clearest difference is rating: UmbiCalc at 5.0 against NICU Fluids's 4.3. UmbiCalc also leads on update cadence (every 12 months vs every 158 months) and iOS requirement (12.0 vs 26.0). On price, review sentiment, ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

UmbiCalc holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

NICU Fluids ships an update every 158 months, UmbiCalc every 12 months. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 7 level
NICU Fluids versus UmbiCalc: the parameters behind the verdict, then further details
ParameterNICU FluidsUmbiCalc
PriceFreeFree
Rating4.3 (7 ratings)5.0 (4 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings7 — better4
Update frequencyEvery 158 monthsEvery 12 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.012.0 — better
Further details — not scored
Size4 MB67 MB
Age rating4+4+
DeveloperAtlas Software Solutions LLCYale

Customer experience

NICU Fluids

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

UmbiCalc

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

NICU Fluids

No in-app purchases

None

UmbiCalc

No in-app purchases

Questions

Is NICU Fluids free?
NICU Fluids is free to download, with no in-app purchases.
Is UmbiCalc free?
UmbiCalc is free to download, with no in-app purchases.
Which has better reviews, NICU Fluids or UmbiCalc?
UmbiCalc is rated higher. NICU Fluids averages 4.3 out of 5 from 7 ratings, while UmbiCalc averages 5.0 from 4 ratings.
Do NICU Fluids or UmbiCalc have ads?
Neither NICU Fluids nor UmbiCalc shows ads.
Which is updated more often, NICU Fluids or UmbiCalc?
NICU Fluids ships an update every 158 months, and UmbiCalc every 12 months. Most recently, NICU Fluids was updated on September 30, 2026 and UmbiCalc on October 3, 2026.

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