Simple Unit Converter App vs PDF Compressor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Unit Converter App
Easily convert between a vast range of measurement units, including acceleration, mass, temperature, and volume. This tool supports numerous categories to help you with everyday conversions and specialized needs.
- Wide array of unit types
- Converts acceleration, mass, temperature, volume, and more
- Supports numerous categories
- User-requested additions
- Intuitive interface
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Simple unit converter that includes a wide array of types Acceleration Angle Angle velocity/frequency Area/2D Concentration mass Dispersion Duration/time Electric charge Electric current Electric potential difference/electricity Electric resistance/electricity Energy/work Force Frequency Fuel efficiency Illuminance/light Information storage/data Length/distance/height/altitude Mass/weight Power/electricity Pressure/stress/strength Speed/velocity Temperature Torque Volume/3D Let us know if there is anything to add.
PDF Compressor
Easily reduce the size of PDF files without sacrificing quality. Organize documents with folders and import PDFs instantly. Ideal for students, professionals, and anyone needing to manage digital documents efficiently.
- Ultra-efficient PDF compression (up to 98%)
- High-quality output
- Simple file picker
- Built-in folder organization
- Fast, intuitive interface
- Works offline
- Share compressed PDFs (Premium)
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PDF Compressor – PDFpress Effortlessly shrink your PDF files without losing clarity. PDFpress is the fastest, simplest way to compress, organize, and manage your documents—perfect for students, professionals, and anyone who deals with PDFs on the go. Why PDFpress? Compress Up to 98% — Reduce file sizes drastically while preserving crisp, readable quality. Send documents faster, free up storage, and keep everything running smoothly. Organize with Folders — Create custom folders directly inside the app to keep your PDFs neat, structured, and easy to find. Import PDFs Instantly — Pick any PDF from your device and compress it in seconds. No accounts, no complexity—just tap and go. Perfect For: Students submitting assignments Professionals sending reports or contracts Anyone wanting to save storage space People who value a clean, organized document library Key Features: Ultra-efficient PDF compression (up to 98% size reduction) High-quality output with no visible loss Simple file picker for instant PDF selection Built-in folder creation and organization Fast, intuitive interface Works offline—your files stay on your device Share compressed PDFs (Premium feature - requires in-app purchase) Premium: Unlock the ability to share your compressed PDFs via email, messaging, cloud services, and more Take control of your documents with PDF Compressor – PDFpress. Fast. Clean. Powerful. Download now and compress smarter. Privacy Policy: https://sites.google.com/view/madbyteapps/pdfpressprivacypolicy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: PDF Compressor at Free against Simple Unit Converter App's $1.99. PDF Compressor also leads on ads (none vs shown) and ratings volume (5 vs 1). On rating, update cadence, in-app purchases and device support 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
PDF Compressor is free to download; Simple Unit Converter App costs $1.99 up front. Simple Unit Converter App sells 3 one-off in-app purchases and PDF Compressor sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Simple Unit Converter App against 5.0 for PDF Compressor. That said, the two scores are not equally well evidenced: PDF Compressor has 5 ratings behind it against 1, so its average is the more settled of the two.
Simple Unit Converter App ships an update every 3 months, PDF Compressor every 4 months. The most recent releases landed on June 23, 2026 and August 27, 2026 respectively.
| Parameter | Simple Unit Converter App | PDF Compressor |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (5 ratings) |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 4 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | CranialDev.LLC | Imad Khan |
Customer experience
Simple Unit Converter App
PDF Compressor
In-app purchases
Simple Unit Converter App
- NoAds$0.99
- Small Tip$1.99
- Generous Tip$4.99
PDF Compressor
- Weekly Premium3 Days trial$4.997 Days
- Yearly Premium$19.991 Year
Questions
Is Simple Unit Converter App free?
Is PDF Compressor free?
Which has better reviews, Simple Unit Converter App or PDF Compressor?
Do Simple Unit Converter App or PDF Compressor have ads?
Which is updated more often, Simple Unit Converter App or PDF Compressor?
Other comparisons
