# Diaper Calc vs Overactive Bladder Score

The clearest difference is update cadence: Overactive Bladder Score at every 4 months against Diaper Calc's every 39 months. Overactive Bladder Score also leads on iOS requirement (12.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Diaper Calc ships an update every 39 months, Overactive Bladder Score every 4 months. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Diaper Calc | Overactive Bladder Score |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/diaper-calc/id1489084828/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 2 MB | 36 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Pavel Zak](https://appshunter.io/developer/536894801) | [Putu Angga Risky Raharja](https://appshunter.io/developer/1164107753) |

## What reviewers say

### Diaper Calc

[App page](https://appshunter.io/ios/app/diaper-calc/id1489084828)

This utility helps parents estimate the number of diapers needed for their baby over a specific period. It considers the baby's current weight and projected growth to recommend optimal diaper pack sizes and offers helpful purchasing tips. The app supports multiple children and works offline.

**Highlights:** Computes diaper count and sizes for up to 3 years, Recommends ideal diaper packaging, Displays baby growth charts, Supports US and EU diaper size distinctions, Usable for multiple children, Offers diaper purchase tips, Works offline, Light/Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


### Overactive Bladder Score

[App page](https://appshunter.io/ios/app/overactive-bladder-score/id1506597809)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diaper Calc free?

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

### Is Overactive Bladder Score free?

Overactive Bladder Score is free to download, with no in-app purchases.

### Do Diaper Calc or Overactive Bladder Score have ads?

Neither Diaper Calc nor Overactive Bladder Score shows ads.

### Which is updated more often, Diaper Calc or Overactive Bladder Score?

Diaper Calc ships an update every 39 months, and Overactive Bladder Score every 4 months. Most recently, Diaper Calc was updated on October 13, 2026 and Overactive Bladder Score on October 1, 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.*