# Diaper Calc vs Potty Training Timer

The clearest difference is rating: Potty Training Timer at 5.0 against Diaper Calc's 3.0. Potty Training Timer also leads on update cadence (daily vs every 39 months) and ratings volume (4 vs 1). Diaper Calc's advantage is in-app purchases (none vs 5). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Potty Training Timer sells 5 in-app purchases, starting at $4.99 per 7 days. Diaper Calc asks for nothing beyond the download.

Potty Training Timer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Diaper Calc ships an update every 39 months, Potty Training Timer daily. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Diaper Calc | Potty Training Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/diaper-calc/id1489084828/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/potty-training-timer-sprout/id6786093655/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 96 MB |
| Requires iOS | 16.6 | **16.2** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Zak](https://appshunter.io/developer/536894801) | [Hussain Mustafa](https://appshunter.io/developer/1247104628) |

## 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


### Potty Training Timer

[App page](https://appshunter.io/ios/app/potty-training-timer-sprout/id6786093655)

This app helps parents and caregivers manage the potty training journey for toddlers and preschoolers. It offers customizable timers, gentle reminders, and progress tracking to celebrate wins and identify patterns, making the process less stressful and more effective.

**Highlights:** Customizable potty training timer, One-tap logging for pees, poops, and accidents, Gentle, customizable reminders, Lock Screen and Dynamic Island Live Activity, Catch rate and dry stretch tracking, Accident pattern insights, Celebrations and rewards

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Monthly | $9.99 | per month |
| Premium Yearly | $19.99 | per year |
| Premium Yearly | $39.99 | per year |
| Premium Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Diaper Calc free?

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

### Is Potty Training Timer free?

Potty Training Timer is free to download, with in-app purchases available.

### Which has better reviews, Diaper Calc or Potty Training Timer?

Potty Training Timer is rated higher. Diaper Calc averages 3.0 out of 5 from 1 ratings, while Potty Training Timer averages 5.0 from 4 ratings.

### Do Diaper Calc or Potty Training Timer have ads?

Neither Diaper Calc nor Potty Training Timer shows ads.

### Which is updated more often, Diaper Calc or Potty Training Timer?

Diaper Calc ships an update every 39 months, and Potty Training Timer daily. Most recently, Diaper Calc was updated on October 13, 2026 and Potty Training Timer on October 20, 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.*