# Contraction Timer & Tracker IO vs Contraction Timer & Tracker ++

The clearest difference is monetization model: Contraction Timer & Tracker ++ at free against Contraction Timer & Tracker IO's free with in-app purchases. Contraction Timer & Tracker ++ also leads on review sentiment (67% vs 50%). Contraction Timer & Tracker IO's advantage is device support (3 vs 1). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Contraction Timer & Tracker IO sells 2 in-app purchases, starting at $1.99 per 7 days and Contraction Timer & Tracker ++ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Contraction Timer & Tracker IO against 4.7 for Contraction Timer & Tracker ++. Both are backed by a comparable volume of ratings — 89 and 80 respectively. Written reviews are what separate them: 50% of Contraction Timer & Tracker IO's written reviews are positive against 67% of Contraction Timer & Tracker ++'s.

Contraction Timer & Tracker IO ships an update every 2 months, Contraction Timer & Tracker ++ every 5 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Contraction Timer & Tracker IO | Contraction Timer & Tracker ++ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (89 ratings)](https://appshunter.io/ios/app/contraction-timer-and-tracker-io/id1633196366/reviews)** | [4.7 (80 ratings)](https://appshunter.io/ios/app/contraction-timer-and-tracker-plus-plus/id6748456343/reviews) |
| Number of ratings | **89** | 80 |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 42 MB | 6 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [ATN Marketing SRL](https://appshunter.io/developer/910577403) | [Fehners Software LLP](https://appshunter.io/developer/395357584) |

## What reviewers say

### Contraction Timer & Tracker IO

[App page](https://appshunter.io/ios/app/contraction-timer-and-tracker-io/id1633196366)

This app helps expectant mothers track labor contractions by measuring duration, frequency, and interval. It detects labor phases and alerts users when it's time to go to the hospital. Features include one-tap tracking, Lock Screen widgets, and dark mode.

**Highlights:** One-tap contraction timing, Duration, frequency, and interval calculation, Labor phase detection, Hospital alerts based on 5-1-1 rule, Lock Screen widget, Dark mode and offline support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contraction Tracker Timer Weekly | $1.99 | per 7 days |
| Contraction Tracker & Timer + | $4.99 | one-time |


### Contraction Timer & Tracker ++

[App page](https://appshunter.io/ios/app/contraction-timer-and-tracker-plus-plus/id6748456343)

This app helps expectant parents track labor contractions with a simple one-tap timer. It provides clear timelines, smart summaries of duration and frequency, and an easy-to-read interface for focused monitoring. The app is fully unlocked with no ads or hidden costs.

**Highlights:** One-tap start and stop, Contraction duration and frequency timeline, Smart trend summaries, Calm and focused interface, Fully unlocked features

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | one-time |


## Frequently asked questions

### Is Contraction Timer & Tracker IO free?

Contraction Timer & Tracker IO is free to download, with in-app purchases available.

### Is Contraction Timer & Tracker ++ free?

Contraction Timer & Tracker ++ is free to download, with in-app purchases available.

### Which has better reviews, Contraction Timer & Tracker IO or Contraction Timer & Tracker ++?

Contraction Timer & Tracker IO is rated higher. Contraction Timer & Tracker IO averages 4.8 out of 5 from 89 ratings, while Contraction Timer & Tracker ++ averages 4.7 from 80 ratings.

### Do Contraction Timer & Tracker IO or Contraction Timer & Tracker ++ have ads?

Neither Contraction Timer & Tracker IO nor Contraction Timer & Tracker ++ shows ads.

### Which is updated more often, Contraction Timer & Tracker IO or Contraction Timer & Tracker ++?

Contraction Timer & Tracker IO ships an update every 2 months, and Contraction Timer & Tracker ++ every 5 weeks. Most recently, Contraction Timer & Tracker IO was updated on October 25, 2026 and Contraction Timer & Tracker ++ on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*