# MDCalc Medical Calculator vs Constipation Diary

The clearest difference is review sentiment: MDCalc Medical Calculator at 72% against Constipation Diary's 17%. MDCalc Medical Calculator also leads on rating (4.9 vs 2.3) and ratings volume (52K vs 7). Constipation Diary's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MDCalc Medical Calculator holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: MDCalc Medical Calculator has 52K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 72% of MDCalc Medical Calculator's written reviews are positive against 17% of Constipation Diary's.

MDCalc Medical Calculator ships an update every 3 weeks, Constipation Diary every 2 months. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MDCalc Medical Calculator | Constipation Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (52K ratings)](https://appshunter.io/ios/app/mdcalc-medical-calculator/id1001640662/reviews)** | [2.3 (7 ratings)](https://appshunter.io/ios/app/constipation-diary/id1438081421/reviews) |
| Number of ratings | **52K** | 7 |
| Positive reviews | **71.5% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Best chart rank | **#152** | — |
| Size | 68 MB | 11 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [MD Aware, LLC](https://appshunter.io/developer/1001640661) | [Amalesh Sanku](https://appshunter.io/developer/1387171071) |

## What reviewers say

### MDCalc Medical Calculator

[App page](https://appshunter.io/ios/app/mdcalc-medical-calculator/id1001640662)

**Currently charting:** #152 Top Free · Medical (US App Store)

This app provides over 900 evidence-based medical calculators, risk scores, and clinical tools for healthcare professionals. It offers offline functionality, expert insights, and CME tracking to support patient care at the bedside. Tools are developed and validated by board-certified physicians.

**Highlights:** 900+ evidence-based calculators, Offline functionality, Expert insights and commentary, CME tracking, Smart search and organization, Point-of-care workflow support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ⭐ Excellent resource
- 🔍 Helpful and accurate
- 🔥 Essential for clinical practice
- 🤖 Useful for medical students and residents
- 💻 Easy to use interface

**What reviewers complain about**

- 🐛 Crashes and bugs after updates
- 🔒 Mandatory login/registration issues
- 📱 Poor user experience on mobile devices
- 🔋 Battery drain and overheating
- 🔍 Lack of certain measurement options (e.g. feet/inches)

**Reported bugs**

- App crashes on launch after recent updates
- Unable to access app after mandatory login requirement
- Keyboard issues and difficulty navigating form fields

**Requested features**

- Add support for gestures and keyboard shortcuts
- Allow users to set Favorites as the default view
- Improve compatibility with iPad and Mac devices
- Expand registration options for international users


### Constipation Diary

[App page](https://appshunter.io/ios/app/constipation-diary/id1438081421)

This app helps individuals track daily bowel movements and related symptoms to better understand and manage constipation. It's designed for prospective assessment in clinical trials and for personal health management.

**Highlights:** Daily symptom tracking, Bowel movement frequency, Stooling habit recording, Constipation assessment, Clinical trial data collection, Patient-reported outcomes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MDCalc Medical Calculator free?

MDCalc Medical Calculator is free to download, with no in-app purchases.

### Is Constipation Diary free?

Constipation Diary is free to download, with no in-app purchases.

### Which has better reviews, MDCalc Medical Calculator or Constipation Diary?

MDCalc Medical Calculator is rated higher. MDCalc Medical Calculator averages 4.9 out of 5 from 52K ratings, while Constipation Diary averages 2.3 from 7 ratings.

### Do MDCalc Medical Calculator or Constipation Diary have ads?

Neither MDCalc Medical Calculator nor Constipation Diary shows ads.

### Which is updated more often, MDCalc Medical Calculator or Constipation Diary?

MDCalc Medical Calculator ships an update every 3 weeks, and Constipation Diary every 2 months. Most recently, MDCalc Medical Calculator was updated on October 21, 2026 and Constipation Diary on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*