# Scales HD vs Invoice Maker・Estimate Creator

The clearest difference is price: Invoice Maker・Estimate Creator at Free against Scales HD's $7.99. Invoice Maker・Estimate Creator also leads on update cadence (weekly vs every 95 months). Scales HD's advantage is rating (4.2 vs 2.0) and in-app purchases (none vs 1). On ads there is nothing between them.

Invoice Maker・Estimate Creator is free to download; Scales HD costs $7.99 up front. Invoice Maker・Estimate Creator sells 1 in-app purchase, starting at $6.99 per 7 days. Scales HD asks for nothing beyond the download.

Scales HD holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: Scales HD has 5 ratings behind it against 1, so its average is the more settled of the two.

Scales HD ships an update every 95 months, Invoice Maker・Estimate Creator weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Scales HD | Invoice Maker・Estimate Creator |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/scales-hd/id418843481/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/invoice-makerestimate-creator/id6753728562/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 95 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 7 MB | 14 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marcelo Mejia Cobo](https://appshunter.io/developer/365496933) | [Arlo Balme](https://appshunter.io/developer/1802967466) |

## What reviewers say

### Scales HD

[App page](https://appshunter.io/ios/app/scales-hd/id418843481)

This app provides a digital architectural and engineering scale ruler with various US and Metric scales. It includes tools like a tape measure and spirit level, with options to flip scales and lock scrolling. Control your music library directly from the app.

**Highlights:** Architectural US Scales, Engineering US Scales, Metric SI Scales, Tape Measure Tool, Spirit Level Tool, Flip Scales Option, Music Control

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

**In-app purchases:** none


### Invoice Maker・Estimate Creator

[App page](https://appshunter.io/ios/app/invoice-makerestimate-creator/id6753728562)

Create, send, and manage professional invoices, quotes, and receipts quickly and easily. Organize all your billing documents in one place to improve cash flow and get paid faster. Ideal for freelancers and small businesses seeking a simple, efficient billing solution.

**Highlights:** Smart digital invoicing, Fast and simple billing, One-tap invoice creation, Organized invoice dashboard, Printable documents (subscription), Customizable with logo and business details

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Unlimited Access | $6.99 | per 7 days |


## Frequently asked questions

### Is Scales HD free?

Scales HD costs $7.99, with no in-app purchases.

### Is Invoice Maker・Estimate Creator free?

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

### Which has better reviews, Scales HD or Invoice Maker・Estimate Creator?

Scales HD is rated higher. Scales HD averages 4.2 out of 5 from 5 ratings, while Invoice Maker・Estimate Creator averages 2.0 from 1 ratings.

### Do Scales HD or Invoice Maker・Estimate Creator have ads?

Neither Scales HD nor Invoice Maker・Estimate Creator shows ads.

### Which is updated more often, Scales HD or Invoice Maker・Estimate Creator?

Scales HD ships an update every 95 months, and Invoice Maker・Estimate Creator weekly. Most recently, Scales HD was updated on October 23, 2026 and Invoice Maker・Estimate Creator 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.*