# CKD vs Referral Tracker

The clearest difference is in-app purchases: CKD at none against Referral Tracker's 1. CKD also leads on iOS requirement (14.0 vs 17.0). Referral Tracker's advantage is update cadence (monthly vs every 8 months). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Referral Tracker sells 1 one-off in-app purchase. CKD asks for nothing beyond the download.

CKD ships an update every 8 months, Referral Tracker monthly. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CKD | Referral Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Free | Free |
| Size | 9 MB | 2 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Digital Noir Pty Ltd](https://appshunter.io/developer/892645270) | [Jason Chua](https://appshunter.io/developer/6774941438) |

## What reviewers say

### CKD

[App page](https://appshunter.io/ios/app/ckd-go/id1047480612)

This clinical guide provides healthcare professionals with up-to-date information and decision-making tools for CKD management. It features a staging calculator based on eGFR and urine albumin-creatinine ratio to determine relevant clinical action plans.

**Highlights:** Clinical guide based on latest evidence, CKD staging calculator, eGFR and urine albumin:creatinine ratio input, Identifies clinical action plans, Decision-making assistance for professionals

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

**In-app purchases:** none


### Referral Tracker

[App page](https://appshunter.io/ios/app/referral-tracker/id6774941436)

This app helps patients manage medical referrals by scanning letters, tracking status, and adding appointments to their calendar. It prioritizes privacy by storing all data locally on the device and offering Face ID lock.

**Highlights:** Scan referral letters with camera, Extract key details using text recognition, Track referral status (Pending, Booked, Completed), Add appointments to Apple Calendar, Email referral details to specialists, Offline functionality, Face ID lock for privacy

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Email Referrals | $1.99 | one-time |


## Frequently asked questions

### Is CKD free?

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

### Is Referral Tracker free?

Referral Tracker is free to download, with in-app purchases available.

### Do CKD or Referral Tracker have ads?

Neither CKD nor Referral Tracker shows ads.

### Which is updated more often, CKD or Referral Tracker?

CKD ships an update every 8 months, and Referral Tracker monthly. Most recently, CKD was updated on October 10, 2026 and Referral Tracker on October 8, 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.*