# Invoice Maker vs Contraction Timer

The clearest difference is in-app purchases: Contraction Timer at none against Invoice Maker's 4. Invoice Maker's advantage is update cadence (every 3 days vs every 2 months) and ratings volume (25 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. Invoice Maker sells 4 in-app purchases, starting at $8.99 per 7 days. Contraction Timer asks for nothing beyond the download.

Contraction Timer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Invoice Maker has 25 ratings behind it against 1, so its average is the more settled of the two.

Invoice Maker ships an update every 3 days, Contraction Timer every 2 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Invoice Maker | Contraction Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (25 ratings)](https://appshunter.io/ios/app/invoice-maker-bill-generator/id6746938705/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/contraction-timer-pregnancy/id6749267179/reviews)** |
| Number of ratings | **25** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 31 MB | 5 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [John Paley](https://appshunter.io/developer/1819048337) | [家豪 魏](https://appshunter.io/developer/1828818535) |

## What reviewers say

### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-bill-generator/id6746938705)

Create professional invoices and estimates quickly with customizable templates. Manage clients and projects, track payments, and gain business insights with smart reports. Enhance your brand with custom logos and colors.

**Highlights:** Professional invoice and estimate creation, Client and project management, Customizable templates with branding, Flexible payment options, Smart revenue and expense reports, Unlimited invoices and estimates

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| accessWeeklySubscription | $8.99 | per 7 days |
| Invoice Maker: Bill Generator. | $8.99 | per 7 days |
| accessMonthlySubscription | $14.99 | per month |
| accessMonthlyTrialSubscription | $15.99 | per month |


### Contraction Timer

[App page](https://appshunter.io/ios/app/contraction-timer-pregnancy/id6749267179)

This app assists expectant mothers in tracking labor progress by timing contractions, monitoring their frequency and duration. It offers visual representations of labor stages and includes features for logging birth events. It serves as a smart companion throughout the delivery process.

**Highlights:** Time contractions, Monitor frequency and duration, Visualize labor stages, Push timer, Birth log

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

**In-app purchases:** none


## Frequently asked questions

### Is Invoice Maker free?

Invoice Maker is free to download, with in-app purchases available.

### Is Contraction Timer free?

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

### Which has better reviews, Invoice Maker or Contraction Timer?

Contraction Timer is rated higher. Invoice Maker averages 4.8 out of 5 from 25 ratings, while Contraction Timer averages 5.0 from 1 ratings.

### Do Invoice Maker or Contraction Timer have ads?

Both Invoice Maker and Contraction Timer show ads.

### Which is updated more often, Invoice Maker or Contraction Timer?

Invoice Maker ships an update every 3 days, and Contraction Timer every 2 months. Most recently, Invoice Maker was updated on October 24, 2026 and Contraction Timer on October 12, 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.*