# Birthsmarter Contraction Timer vs Calm Contraction Timer

The clearest difference is in-app purchases: Birthsmarter Contraction Timer at none against Calm Contraction Timer's 1. Calm Contraction Timer's advantage is update cadence (every 2 weeks vs every 59 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calm Contraction Timer sells 1 one-off in-app purchase. Birthsmarter Contraction Timer asks for nothing beyond the download.

Birthsmarter Contraction Timer ships an update every 59 months, Calm Contraction Timer every 2 weeks. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Birthsmarter Contraction Timer | Calm Contraction Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/birthsmarter-contraction-timer/id1554338192/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 0 MB | 57 MB |
| Requires iOS | **14.3** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Birthsmarter Inc.](https://appshunter.io/developer/1554338194) | [Amanda Maricle](https://appshunter.io/developer/1876075985) |

## What reviewers say

### Birthsmarter Contraction Timer

[App page](https://appshunter.io/ios/app/birthsmarter-contraction-timer/id1554338192)

This app helps track labor contractions with intuitive controls and visual breathing cues. It provides a detailed log of contraction patterns and allows sharing with partners or providers. Designed to be calming and reduce stress during childbirth.

**Highlights:** Intuitive touch-anywhere start/stop, Visual breathing cues for rhythmic breathing, Detailed contraction log with averages, Option to hide clock/timer, Share contraction patterns via text/email, Manual editing of contraction entries, Auto-filtering of short/long contractions

**Features:** macOS Compatibility

**In-app purchases:** none


### Calm Contraction Timer

[App page](https://appshunter.io/ios/app/calm-contraction-timer/id6758966642)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contraction Tracking - Base | $2.99 | one-time |


## Frequently asked questions

### Is Birthsmarter Contraction Timer free?

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

### Is Calm Contraction Timer free?

Calm Contraction Timer is free to download, with in-app purchases available.

### Do Birthsmarter Contraction Timer or Calm Contraction Timer have ads?

Neither Birthsmarter Contraction Timer nor Calm Contraction Timer shows ads.

### Which is updated more often, Birthsmarter Contraction Timer or Calm Contraction Timer?

Birthsmarter Contraction Timer ships an update every 59 months, and Calm Contraction Timer every 2 weeks. Most recently, Birthsmarter Contraction Timer was updated on October 24, 2026 and Calm Contraction Timer on October 11, 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.*