# Scan to PDF－Document Scanner vs Invoice Maker・Estimate App

The clearest difference is review sentiment: Invoice Maker・Estimate App at 67% against Scan to PDF－Document Scanner's 28%. Invoice Maker・Estimate App also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). Scan to PDF－Document Scanner's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (62K vs 201). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Scan to PDF－Document Scanner sells 12 in-app purchases, starting at $4.99 per month and Invoice Maker・Estimate App sells 4 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Invoice Maker・Estimate App holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Scan to PDF－Document Scanner has 62K ratings behind it against 201, so its average is the more settled of the two. Written reviews point the same way: 28% of Scan to PDF－Document Scanner's written reviews are positive against 67% of Invoice Maker・Estimate App's.

Scan to PDF－Document Scanner ships an update every 3 weeks, Invoice Maker・Estimate App every 3 days. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Scan to PDF－Document Scanner | Invoice Maker・Estimate App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (62K ratings)](https://appshunter.io/ios/app/scan-to-pdfdocument-scanner/id1575194801/reviews) | **[4.9 (201 ratings)](https://appshunter.io/ios/app/invoice-makerestimate-app/id6739814340/reviews)** |
| Number of ratings | **62K** | 201 |
| Positive reviews | 28.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Best chart rank | **#27** | — |
| Size | 220 MB | 18 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Scanner App PDF Tool](https://appshunter.io/developer/1575194803) | [Dynamic Falcon](https://appshunter.io/developer/1221926593) |

## What reviewers say

### Scan to PDF－Document Scanner

[App page](https://appshunter.io/ios/app/scan-to-pdfdocument-scanner/id1575194801)

**Currently charting:** #27 Top Grossing · Business (US App Store)

Transform your phone into a portable office. Scan, sign, and convert documents to various formats like PDF, DOCX, and TXT. Features include unlimited scanning, OCR text recognition, and secure password protection for your files.

**Highlights:** Unlimited document scanning, E-signature creation and application, OCR text recognition and editing, Batch and merge documents, Export to PDF, JPG, DOCX, PPTX, TXT, QR code scanning, Distance and object measurement

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Complete | $4.99 | per month |
| 1 Week Express: Free Week | $6.99 | per 7 days |
| 1 Week Ultimate | $6.99 | per 7 days |
| 1 Week Ultimate Lite | $6.99 | per 7 days |
| 1 Week Premium | $6.99 | per 7 days |
| 1 Month Plan | $6.99 | per month |
| 1 Week Express | $7.99 | per 7 days |
| 1 Week Extended | $9.99 | per 7 days |
| 1 Week Elite | $9.99 | per 7 days |
| 1 Week Advanced | $9.99 | per 7 days |
| 1 Week Lite | $9.99 | per 7 days |
| Document scanner app | $35.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 👍 Intuitive interface
- 🚀 Efficient scanning
- 👍 Useful features
- 🚀 Quick document conversion

**What reviewers complain about**

- 💰 Expensive subscription
- 🔒 Difficult to cancel subscription
- 🐛 Unreliable document export
- 💰 Misleading pricing
- 🐛 Poor OCR quality

**Reported bugs**

- Inconsistent document formatting
- Scanning issues with certain devices
- Unreliable document transfer

**Requested features**

- Ability to save scans without subscription
- More transparent pricing and subscription model
- Improved OCR accuracy
- Easier subscription cancellation process


### Invoice Maker・Estimate App

[App page](https://appshunter.io/ios/app/invoice-makerestimate-app/id6739814340)

Create, send, and manage professional invoices, estimates, and receipts effortlessly. Designed for freelancers and small businesses, this tool helps you get paid faster and stay organized on the go.

**Highlights:** Create professional invoices, Send estimates and receipts, Convert estimates to invoices, Track invoices and payments, Manage client information, Send invoices via email/text

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Estimates & Invoices Maker Weekly | $5.99 | per 7 days |
| Create Invoices On-site with trial | $5.99 | per 7 days |
| Create Invoice Templates Monthly | $9.99 | per month |
| Simple Invoices Generator Annually | $99.99 | per year |


## Frequently asked questions

### Is Scan to PDF－Document Scanner free?

Scan to PDF－Document Scanner is free to download, with in-app purchases available.

### Is Invoice Maker・Estimate App free?

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

### Which has better reviews, Scan to PDF－Document Scanner or Invoice Maker・Estimate App?

Invoice Maker・Estimate App is rated higher. Scan to PDF－Document Scanner averages 4.7 out of 5 from 62K ratings, while Invoice Maker・Estimate App averages 4.9 from 201 ratings.

### Do Scan to PDF－Document Scanner or Invoice Maker・Estimate App have ads?

Scan to PDF－Document Scanner shows ads; Invoice Maker・Estimate App does not.

### Which is updated more often, Scan to PDF－Document Scanner or Invoice Maker・Estimate App?

Scan to PDF－Document Scanner ships an update every 3 weeks, and Invoice Maker・Estimate App every 3 days. Most recently, Scan to PDF－Document Scanner was updated on October 19, 2026 and Invoice Maker・Estimate App on October 17, 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.*