# Scan Documents to PDF l by TSP vs MailTrace

The clearest difference is in-app purchases: MailTrace at none against Scan Documents to PDF l by TSP's 4. MailTrace also leads on rating (5.0 vs 4.6). Scan Documents to PDF l by TSP's advantage is ratings volume (258 vs 1) and update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Scan Documents to PDF l by TSP sells 3 in-app purchases, starting at $3.99 per month. MailTrace asks for nothing beyond the download.

MailTrace holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Scan Documents to PDF l by TSP has 258 ratings behind it against 1, so its average is the more settled of the two.

Scan Documents to PDF l by TSP ships an update monthly, MailTrace every 2 months. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Scan Documents to PDF l by TSP | MailTrace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (258 ratings)](https://appshunter.io/ios/app/scan-documents-to-pdf-l-by-tsp/id1602579538/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mailtrace/id6769105347/reviews)** |
| Number of ratings | **258** | 1 |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 29 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Salty Pistachio](https://appshunter.io/developer/1507018512) | [玉东 娄](https://appshunter.io/developer/1896336427) |

## What reviewers say

### Scan Documents to PDF l by TSP

[App page](https://appshunter.io/ios/app/scan-documents-to-pdf-l-by-tsp/id1602579538)

Transform your device into a powerful portable scanner. Easily capture, save, and share documents as PDFs, images, or text. Organize and sync your files with cloud storage, and protect them with passwords.

**Highlights:** Scan documents to PDF, Image, or TXT, Cloud sync with iCloud, OCR text extraction, Password protection, Digital signatures, Watermarking, Auto edge detection

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Quarterly Subscription | $9.99 | per 3 months |
| Annual Subscription | $19.99 | per year |


### MailTrace

[App page](https://appshunter.io/ios/app/mailtrace/id6769105347)

Capture photos and screenshots, then add timestamp watermarks locally. Automatically generate email drafts with trace IDs and checksums for easy record-keeping and sharing.

**Highlights:** Timestamp watermarks on photos, Select images from library, Import via Share Extension, Custom watermark identity, Trace IDs and checksums in email, On-device processing

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

**In-app purchases:** none


## Frequently asked questions

### Is Scan Documents to PDF l by TSP free?

Scan Documents to PDF l by TSP is free to download, with in-app purchases available.

### Is MailTrace free?

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

### Which has better reviews, Scan Documents to PDF l by TSP or MailTrace?

MailTrace is rated higher. Scan Documents to PDF l by TSP averages 4.6 out of 5 from 258 ratings, while MailTrace averages 5.0 from 1 ratings.

### Do Scan Documents to PDF l by TSP or MailTrace have ads?

Neither Scan Documents to PDF l by TSP nor MailTrace shows ads.

### Which is updated more often, Scan Documents to PDF l by TSP or MailTrace?

Scan Documents to PDF l by TSP ships an update monthly, and MailTrace every 2 months. Most recently, Scan Documents to PDF l by TSP was updated on November 7, 2026 and MailTrace on November 5, 2026.

---

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