# CoatingMaster vs Bladder Diary Tracker

The clearest difference is review sentiment: Bladder Diary Tracker at 69% against CoatingMaster's 0%. Bladder Diary Tracker also leads on update cadence (every 2 weeks vs every 7 months). CoatingMaster's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

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

CoatingMaster ships an update every 7 months, Bladder Diary Tracker every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CoatingMaster | Bladder Diary Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (7 ratings)](https://appshunter.io/ios/app/bladder-diary-tracker/id1487355489/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 0.0% of reviews | **69.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 10 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [海军 欧阳](https://appshunter.io/developer/1284631051) | [Yuta Endo](https://appshunter.io/developer/1256506814) |

## What reviewers say

### CoatingMaster

[App page](https://appshunter.io/ios/app/coatingmaster/id1336000948)

This dual-purpose instrument uses magnetic and eddy current methods to measure the thickness of coatings on both magnetic and non-magnetic metal substrates. It features automatic substrate identification, multiple calibration options, and a negative display function for enhanced accuracy. The device offers audible prompts and both manual and automatic power-off modes.

**Highlights:** Magnetic and eddy current measurement, Automatic substrate identification, Single and two-point calibration, Basic calibration correction, Negative display for zero point accuracy, Audible prompts, Manual and automatic power-off

**Features:** macOS Compatibility

**In-app purchases:** none


### Bladder Diary Tracker

[App page](https://appshunter.io/ios/app/bladder-diary-tracker/id1487355489)

Easily log your urination volume and time to track voiding patterns. This health and fitness app helps you monitor your daily bladder habits.

**Highlights:** Log urination volume, Record urination time, Track voiding patterns, Daily habit monitoring, Health & Fitness tracking

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide ads | $5.99 | one-time |


## Frequently asked questions

### Is CoatingMaster free?

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

### Is Bladder Diary Tracker free?

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

### Do CoatingMaster or Bladder Diary Tracker have ads?

Bladder Diary Tracker shows ads; CoatingMaster does not.

### Which is updated more often, CoatingMaster or Bladder Diary Tracker?

CoatingMaster ships an update every 7 months, and Bladder Diary Tracker every 2 weeks. Most recently, CoatingMaster was updated on November 2, 2026 and Bladder Diary Tracker on November 3, 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.*