I.C.U. RenalCalc vs CASP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
I.C.U. RenalCalc
This medical app offers essential calculations for continuous renal replacement therapy in critical care settings. It assists with dose and volume calculations for convection and diffusion, filter efficiency, and coagulation parameters. Additionally, it includes modules for specific calculations like filtration fraction and transmembrane pressure.
- Continuous renal replacement therapy calculations
- Dose and volume calculations (PRE/POST)
- Filter efficiency and Kuf calculation
- Coagulation calculations
- Filtration fraction module
- Transmembrane pressure (TMP) module
- Renal function and electrolyte calculations
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I.C.U. RenalCalc provides the most frequently used calculations next to patient bed, when continuous renal replacement techniques are required. The application also warns about certain situations that can endanger the filter. ICU RenalCalc® offers the following options: - Frequently used calculations in the patients under CVVH and CVVHDF. Calculations about the dose and volume of convection in PRE and POST, volume of diffusion, calculation of the Kuf of the filter based on the transmembrane pressure (TMP), calculation of the anticipated TMP before initiating the technique, calculation of the filtration fraction (FF) and calculation of the efficiency of the filter. - Coagulation calculations - Specific module for filtration fraction calculation. - Specific module for TMP calculation - Specific module that allows the user to make calculations in this field: Cockroft-Gault, MDRD, fractional sodium excretion, anion gap, measured creatinine clearance, calculated plasmatic and urinary osmolarity, sodium, water and bicarbonate deficit.
CASP
Critically appraise medical literature using evidence-based templates. Includes a glossary, calculators for NNT and post-test probability, and the ability to save and share appraisals.
- Critical appraisal templates
- Glossary of terms
- NNT calculator
- Post-Test Probability calculator
- Save and share appraisals
- PDF export
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CASP offers a convenient way to critically apprais the medical literature, it is based in CASP (Critical Appraisal Skills Programme) templates. And incorporates a Glossary section, and NNT and Post-Test Probability calculators with interpretation of the results. It allows to save and share critical appraisals in CASP and PDF formats.
Screenshots
Verdict
The clearest difference is price: CASP at Free against I.C.U. RenalCalc's $4.99. CASP also leads on update cadence (every 2 months vs every 6 months) and review sentiment (100% vs 86%). I.C.U. RenalCalc's advantage is rating (5.0 vs 2.5). On ratings volume, ads, in-app purchases and device support 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
CASP is free to download; I.C.U. RenalCalc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
I.C.U. RenalCalc holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews complicate that: 86% of I.C.U. RenalCalc's written reviews are positive against 100% of CASP's, so the app with the better star average is not the one people write more warmly about.
I.C.U. RenalCalc ships an update every 6 months, CASP every 2 months. The most recent releases landed on November 10, 2026 and November 1, 2026 respectively.
| Parameter | I.C.U. RenalCalc | CASP |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 2.5 (2 ratings) |
| Positive reviews | 85.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 7.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 2 MB |
| Age rating | 17+ | 4+ |
| Developer | Antoni Betbese | Luis Ruiz del Fresno |
Customer experience
I.C.U. RenalCalc
CASP
In-app purchases
I.C.U. RenalCalc
No in-app purchases
CASP
No in-app purchases
Questions
Is I.C.U. RenalCalc free?
Is CASP free?
Which has better reviews, I.C.U. RenalCalc or CASP?
Do I.C.U. RenalCalc or CASP have ads?
Which is updated more often, I.C.U. RenalCalc or CASP?
Other comparisons
