Acute Liver Failure Prognostic vs Constipation Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Acute Liver Failure Prognostic
This medical tool calculates the likelihood of transplant-free survival for patients with acute liver failure. It uses five data points to provide a percentage prediction, aiding in transplant listing decisions.
- Predicts 21-day transplant-free survival
- Calculates likelihood of survival
- Uses 5 key data points
- Aids transplant listing decisions
- Conservative survival prediction
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Acute Liver Study Group Prognostic Model The ALFSG Prognostic Model can be used to predict 21-day transplant-free survival (TFS) in patients with acute liver failure (ALF). Enter each of the 5 data points as indicated and the model will calculate the percent likelihood of TFS. By convention, most centers consider a prediction of > 20% likelihood of TFS as an indication for transplant listing. The model is a conservative one, rarely (2%) predicting survival in ALF patients that otherwise died or needed transplant. References: Koch DG, Tillman H, Durkalski V, Lee WM, Reuben A. Development of a Model to Predict Transplant-free Survival of Patients With Acute Liver Failure. Clin Gastroenterol Hepatol. 2016 Aug;14(8):1199-1206.
Constipation Diary
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.
- Daily symptom tracking
- Bowel movement frequency
- Stooling habit recording
- Constipation assessment
- Clinical trial data collection
- Patient-reported outcomes
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©NEUROGUT 2018 CONSTIPATION STOOL INSTRUMENT Basic description: The Constipation Stool Instrument (CSI) is a list of patient-reported symptoms for the evaluation of bowel problems associated with constipation. Constipation affects 15% of the US population. Constipation comprises of multiple symptoms that describe the frequency and difficulty with bowel movements. Because of the irregular nature of bowel habit, the multiple and variable symptoms, and difficulty with remembering symptoms as well as recall bias, it is important to prospectively assess patient-reported bowel symptoms, for use in clinical trials, and for the assessment of patients with constipation. Authors: Neurogut Incorporated (USA) Objective: To assess the presence of and severity of patient-reported bowel and abdominal symptoms related to constipation, for use in clinical trials, and assessment of patients with constipation Therapeutic Areas: Gastrointestinal and Digestive System Diseases Pathological conditions, Signs and Symptoms Therapeutic indication: Constipation Dyssynergic defecation Anorectal and Colorectal diseases Type of Clinical Outcome Assessment (COA) Patient Reported Outcome (PRO) assessment Original language English for the USA Bibliographic reference for the original questionnaire: Meduri K, Brown CK, Attaluri A, Valestin J, Rao SSC. Validation of a Prospective Stool Diary for Assessment of Constipation. Neurogastroenterol Motil 2011; 23 (Supplement 1): 21. Administration: The Constipation Stool Instrument (CSI) is a daily, self-administered questionnaire for the assessment of bowel habit. The subject is instructed to fill out all 11 items for one day by responding on each screen presented, and as it relates to each bowel movement. It takes 1 minute to complete this App for each bowel movement. Purpose of survey: To accurately and more completely record each subject’s bowel and stooling habit To better understand the subject’s constipation problem To use the information to improve the health of a patient with constipation Benefits to the Respondent: To improve diagnosis of constipation and to identify the subject’s subtype of constipation To help develop appropriate treatment plan To help develop new treatments
Screenshots
Verdict
The clearest difference is rating: Acute Liver Failure Prognostic at 5.0 against Constipation Diary's 2.3. Constipation Diary's advantage is update cadence (every 2 months vs every 18 months) and iOS requirement (13.0 vs 26.0). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Acute Liver Failure Prognostic holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 7 respectively.
Acute Liver Failure Prognostic ships an update every 18 months, Constipation Diary every 2 months. The most recent releases landed on June 24, 2026 and September 10, 2026 respectively.
| Parameter | Acute Liver Failure Prognostic | Constipation Diary |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 2.3 (7 ratings) |
| Positive reviews | — | 16.7% of reviews |
| Number of ratings | 3 | 7 — better |
| Update frequency | Every 18 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 11 MB |
| Age rating | 17+ | 17+ |
| Developer | Tung Tree LLC | Amalesh Sanku |
Customer experience
Acute Liver Failure Prognostic
Constipation Diary
In-app purchases
Acute Liver Failure Prognostic
No in-app purchases
Constipation Diary
No in-app purchases





