# 이음 vs Dr. Calcium

The clearest difference is iOS requirement: 이음 at 12.1 against Dr. Calcium's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

이음 ships an update every 6 days, Dr. Calcium every 9 days. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 이음 | Dr. Calcium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dr-calcium/id6761144466/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 9 days |
| Monetization | Free | Free |
| Size | 104 MB | 24 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [jaepyo lee](https://appshunter.io/developer/1725078277) | [True Nutrition Company](https://appshunter.io/developer/1888016648) |

## What reviewers say

### 이음

[App page](https://appshunter.io/ios/app/id6475754386)

Connect with fellow breast cancer patients through a dedicated community app. Share experiences on a bulletin board, find compatible peers using filters, and engage in one-on-one chats.

**Highlights:** Community bulletin board, Find compatible patients, 1:1 chat with peers, Filter by blood type, stage, and cancer type

**Features:** macOS Compatibility

**In-app purchases:** none


### Dr. Calcium

[App page](https://appshunter.io/ios/app/dr-calcium/id6761144466)

This health and wellness app helps you organize personal health data, track nutrition, and access educational resources. It includes tools for logging meals, monitoring health indicators, and storing medical test results.

**Highlights:** Food Diary, Health Score Tracking, Blood Test Log, Bone Density Log, BMI Calculator, Vitamin D Tools, AI Health Assistant

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

**In-app purchases:** none


## Frequently asked questions

### Is 이음 free?

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

### Is Dr. Calcium free?

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

### Do 이음 or Dr. Calcium have ads?

Neither 이음 nor Dr. Calcium shows ads.

### Which is updated more often, 이음 or Dr. Calcium?

이음 ships an update every 6 days, and Dr. Calcium every 9 days. Most recently, 이음 was updated on October 14, 2026 and Dr. Calcium on October 13, 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.*