# Nerd Contraction Timer vs World Heart Day

The clearest difference is update cadence: World Heart Day at every 3 days against Nerd Contraction Timer's every 10 days. 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.

Nerd Contraction Timer ships an update every 10 days, World Heart Day every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Nerd Contraction Timer | World Heart Day |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/nerd-contraction-timer/id6754770034/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 31 MB | 162 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Clement Rousseau](https://appshunter.io/developer/1521763296) | [Synaptic Hub](https://appshunter.io/developer/1888191015) |

## What reviewers say

### Nerd Contraction Timer

[App page](https://appshunter.io/ios/app/nerd-contraction-timer/id6754770034)

Effortlessly track labor contractions with this intuitive app. It provides clear visualizations of patterns, intensity, and duration, offering smart alerts to help you know when to head to the hospital. Focus on your delivery with organized data and a clean interface.

**Highlights:** One-tap start/stop contraction tracking, Contraction chart with intensity levels, Adjustable contraction intensity, Edit contractions anytime, Smart 5-1-1 hospital alerts, Progress bar visualization, Automatic duration, interval, and frequency calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### World Heart Day

[App page](https://appshunter.io/ios/app/world-heart-day/id6765968312)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nerd Contraction Timer free?

Nerd Contraction Timer is free to download, with no in-app purchases.

### Is World Heart Day free?

World Heart Day is free to download, with no in-app purchases.

### Do Nerd Contraction Timer or World Heart Day have ads?

Neither Nerd Contraction Timer nor World Heart Day shows ads.

### Which is updated more often, Nerd Contraction Timer or World Heart Day?

Nerd Contraction Timer ships an update every 10 days, and World Heart Day every 3 days. Most recently, Nerd Contraction Timer was updated on October 24, 2026 and World Heart Day on October 24, 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.*