Comparison

Body Surface Area vs Dialysis Fluid Tracker

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

Head to head
About

Body Surface Area

Features
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This application is suitable for calculating the proper dose of medicine. You can calculate body surface area by Du Bois formula and Mosteller formula. When entering the values(Height and Weight) and pressing the "=" button, the body surface area is displayed.

About

Dialysis Fluid Tracker

Features
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Hydrate Calm โ€” Dialysis Fluid Tracker A serene, patient-first fluid tracking companion designed for people managing dialysis, heart failure, kidney disease, or any condition that requires careful daily fluid monitoring. Built with calm, dignity, and accessibility at its core โ€” no alarms, no judgment, no clutter. What it does Hydrate Calm helps you log every sip and every output with one gentle tap. A soft, animated fluid tank shows how much of your daily allowance remains, using calming oxygenated blue tones rather than red warnings. It's a quiet companion that makes a hard day slightly easier. Key Features Effortless logging One-tap quick-log buttons for common amounts (100ml, 200ml, 250ml, 16.9oz, etc.) "+ Specify" custom entry with fluid category pills: Visible, Hidden, Fluid-Rich Foods, and Melters โ€” each with helpful info tooltips Manual output tracking Edit, delete, and reorder any entry Calm daily overview Today screen with current date and animated fluid tank visualization "Available today" wording โ€” never "exceeded" or "over limit" Intake/Output toggle for quick switching Today's log with per-entry edit and delete Thoughtful history 7-day bar chart overview Daily collapsible dropdown groups for clean review Filter pills: All / Intake / Output Average daily intake & output summary card 30-day trends (Support+) Personalization Adjustable daily fluid allowance (ml or oz input) Unit toggle between milliliters and ounces, anywhere in the app Optional gentle daily reminder โ€” OFF by default, "a daily calm nudge, nothing urgent" Privacy & control Apple Sign In or continue as guest Your data stays on your device Clear All Data and Delete Account in Settings No ads. No data selling. Ever. Support+ upgrade (7-day free trial, monthly or yearly) Backdated entries PDF export for clinicians Full offline support 30-day trend charts Custom quick-log presets Accessibility & care Large 48pt+ tap targets for users with tremors or neuropathy High-contrast, legible typography Generous spacing and rounded corners 4-step onboarding tutorial FAQ, Privacy Policy, and Terms screens built in Disclaimer: Hydrate Calm does not provide medical advice. Always follow your care team's guidance. Terms of Use: https://click-for-health.com/terms

Screenshots

Body Surface Area2 screens
Dialysis Fluid Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Body Surface Area at none against Dialysis Fluid Tracker's 2. Body Surface Area also leads on iOS requirement (12.1 vs 15.1). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Dialysis Fluid Tracker sells 2 in-app purchases, starting at $3.99 per month. Body Surface Area asks for nothing beyond the download.

Scorecard2 real differences ยท 4 level
Body Surface Area versus Dialysis Fluid Tracker: the parameters behind the verdict, then further details
ParameterBody Surface AreaDialysis Fluid Tracker
PriceFreeFree
Update frequencyโ€”Every 2 months
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS12.1 โ€” better15.1
Further details โ€” not scored
Size11 MB41 MB
Age rating17+4+
DeveloperHidenori IshiiTroy Shepherd

In-app purchases

None

Body Surface Area

No in-app purchases

2 purchases

Dialysis Fluid Tracker

Subscriptions2
  • Montlhy7 Days trial$3.991 Month
  • Yearly7 Days trial$29.001 Year

Questions

Is Body Surface Area free?
Body Surface Area is free to download, with no in-app purchases.
Is Dialysis Fluid Tracker free?
Dialysis Fluid Tracker is free to download, with in-app purchases available.
Do Body Surface Area or Dialysis Fluid Tracker have ads?
Neither Body Surface Area nor Dialysis Fluid Tracker shows ads.

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