Comparison

PDF Compressor ・ PDF Converter vs MailTrace

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PDF Compressor ・ PDF Converter

Easily convert, scan, compress, and edit documents into PDFs. This tool offers smart camera features for accurate scanning, flexible compression options to save space, and the ability to merge or convert files. Keep your documents organized and secure with password protection.

Highlights
  • Convert photos, files, and scans to PDF
  • Smart camera for auto-detection and cropping
  • Compress PDFs with quality settings
  • Merge multiple PDFs
  • Convert PDFs to JPG or ZIP
  • Password protect sensitive documents
  • Edit and reorder PDF pages
Features
Read full description

Turn your iPhone into a powerful, easy-to-use PDF machine. Whether you need to convert, scan, compress, edit or keep your documents safe — PDF Converter has you covered. Here’s what you can do: ・ Convert photos, files, or camera scans into PDFs in seconds ・ Use the smart camera (Apple Vision-powered) to auto-detect document edges, auto-shoot, crop, and apply filters ・ Compress PDFs with flexible quality settings — save space without losing clarity ・ Merge multiple PDFs into one clean file ・ Convert PDFs to JPG (with quality options) or ZIP archives ・ Keep your conversion history neatly organized — search and sort your files easily ・ Lock sensitive documents with a password ・ Reorder or delete pages ・ Edit, adjust and enhance PDF pages Super optimized processing will help you process hundreds of pages without delays and errors 
Students scanning notes. Office workers tidying paperwork. Freelancers sending contracts. Anyone who wants full control over their PDFs — right from their phone. If you want your PDFs exactly the way you want them — with no fuss — PDF Converter is for you. Download it today and see how easy PDF can be. Privacy Policy: http://rjpups.com/converter/privacypolicy Terms of Use: https://rjpups.com/converter/terms Support: https://rjpups.com/pdfconverter/support

About

MailTrace

Features
Read full description

MailTrace is a lightweight on-device photo timestamping and email record tool for keeping personal process records, field notes, screenshots, and work-related image archives. You can take a photo, choose images from your library, or import screenshots and photos through the iOS share sheet. MailTrace adds timestamp watermarks locally on your device and prepares an email draft with a trace ID, attachment checksum information, and optional notes, making it easier to send records to your own mailbox or selected recipients for later review. Key features: • Add timestamp watermarks after taking a photo • Select images from your library and prepare trace emails • Import screenshots or photos through the Share Extension • Customize a short watermark identity, such as a project, field team, or role • Include trace IDs and SHA-256 attachment checksums in the email body • Fall back to the system share sheet when system Mail is unavailable • Process photos entirely on device without uploading them to any server Use cases: • Field or worksite records • Overtime process notes • Chat screenshot archiving • Project, inspection, delivery, or quality-control records • Personal image records organized by email and timestamp Privacy: MailTrace does not require an account, does not include advertising or tracking SDKs, and does not upload photos. Recipient emails and watermark settings are stored only on your device. Email delivery is handled by the iOS system Mail capability and depends on the Mail app, network status, and your email provider. Important note: MailTrace is intended for personal process records and later review. Watermarks, trace IDs, checksums, and email archives may serve as supporting material or reference, but they do not replace notarization, forensic examination, or electronic evidence preservation services, and they do not guarantee acceptance by any authority. For labor disputes, contract issues, or rights protection, keep the original records and consult a qualified professional.

Screenshots

PDF Compressor ・ PDF Converter4 screens
MailTrace4 screens

Verdict

The call

The clearest difference is in-app purchases: MailTrace at none against PDF Compressor ・ PDF Converter's 10. MailTrace also leads on ads (none vs shown). PDF Compressor ・ PDF Converter's advantage is update cadence (every 5 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PDF Compressor ・ PDF Converter sells 9 in-app purchases, starting at $4.99 per 7 days. MailTrace asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Compressor ・ PDF Converter ships an update every 5 days, MailTrace every 2 months. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 6 level
PDF Compressor ・ PDF Converter versus MailTrace: the parameters behind the verdict, then further details
ParameterPDF Compressor ・ PDF ConverterMailTrace
PriceFreeFree
Rating4.8 (70 ratings) — better—
Number of ratings70 — better—
Update frequencyEvery 5 days — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size41 MB1 MB
Age rating4+4+
DeveloperRIJIPUPS OU玉东 娄

In-app purchases

9 purchases

PDF Compressor ・ PDF Converter

Subscriptions9
  • PDF Converter PRO3 Days trial$4.997 Days
  • PDF Converter PRO3 Days trial$6.997 Days
  • PDF Converter PRO7 Days trial2 variants$6.997 Days
Show 6 more
  • PDF Converter PRO$6.997 Days
  • PDF Converter PRO14 Days trial$7.997 Days
  • PDF Converter PRO1 Month trial$11.991 Month
  • PDF Converter PRO3 Days trial$19.991 Month
  • PDF Converter PRO$99.991 Year
  • PDF Converter PRO$119.991 Year
None

MailTrace

No in-app purchases

Questions

Is PDF Compressor ・ PDF Converter free?
PDF Compressor ・ PDF Converter is free to download, with in-app purchases available.
Is MailTrace free?
MailTrace is free to download, with no in-app purchases.
Do PDF Compressor ・ PDF Converter or MailTrace have ads?
PDF Compressor ・ PDF Converter shows ads; MailTrace does not.
Which is updated more often, PDF Compressor ・ PDF Converter or MailTrace?
PDF Compressor ・ PDF Converter ships an update every 5 days, and MailTrace every 2 months. Most recently, PDF Compressor ・ PDF Converter was updated on October 9, 2026 and MailTrace on October 1, 2026.

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