Conversion Calculator Plus vs QuickPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Conversion Calculator Plus
This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.
- Unit and currency conversion
- Supports 160+ currencies (real & crypto)
- Automatic currency exchange rate updates
- Simple or carousel design options
- Dark Mode support
- Customizable home screen layout
- Split screen mode on iPad
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Whether you are measuring ingredients for a recipe, comparing currencies while traveling or working through an everyday calculation, Conversion Calculator Plus brings the tools together in one app. Convert among 685 units in 72 categories, with exchange rates for 160 currencies, 126 cryptocurrencies and four precious metals. NEW IN VERSION 3.0 • Currency+: compare multiple currencies in a list you can reorder, and calculate directly in the amount field. • Currency History: view historical exchange rates on a chart. • Built-in calculator: enter expressions in supported converters and see results update as you type. • Interactive Home Screen widgets: save a converter and calculate from the Home Screen. Premium required. • Siri: run a saved conversion by name, start a new conversion or update a widget's amount. Premium required; command availability depends on your iPhone's Siri language. UNIT CONVERSION • Convert length, area, weight, temperature, speed, time, pressure, volume, energy, data and many other measurements. • Work with cooking measures, shoe and ring sizes, running pace, fuel economy and blood sugar. • View results as you enter an amount, and copy them to use in other apps. CURRENCY AND MARKETS • Exchange rates for 160 world currencies update automatically. • Compare 126 cryptocurrencies and the prices of gold, silver, platinum and palladium. • Use Currency+ to compare several currencies at once and Currency History to examine past rates. PERSONALIZE YOUR WORKSPACE • Choose Classic, Modern Simple or Modern Carousel, and switch styles in Settings. • Save frequently used conversions as Favorites; edit, delete or reorder them. • Hide categories and units you do not use. • Search categories and units, and arrange category icons on the Home Screen. • Use the app on iPhone or iPad, including Split View on iPad. Light and dark appearances are supported. • Available in 33 app languages. PREMIUM Premium is an optional auto-renewing annual subscription. It removes ads, enables offline use, and unlocks interactive Home Screen widgets and Siri conversions. Payment is charged to your Apple Account when you confirm the purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. The price is shown before you confirm. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/convert-units-plus/privacy.html
QuickPDF
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QuickPDF — the complete PDF toolkit, signing, and AI chat, all in one app. QuickPDF brings the PDF tools you usually need a desktop for straight to your phone. Merge, compress, split, rotate, and reorder pages. Sign documents, add watermarks and page numbers, lock or unlock with a password, and convert to and from Word, Excel, and HTML. Most everyday tools run right on your device — no upload, no account, no waiting. What QuickPDF does • Merge — combine multiple PDFs into one in the order you choose. • Compress — shrink file size for easier sharing and email. • Split — extract pages or break a big PDF into smaller ones with a visual page picker. • Rotate & Reorder — fix orientation and rearrange pages with a tap. • Lock / Unlock — add or remove password protection. • Sign PDF — draw or place your signature anywhere on the page. • Image to PDF / PDF to Image — turn photos into a PDF, or export pages as images. • Watermark — stamp text or image watermarks across your document. • Page Numbers — add automatic page numbering. • Annotate — highlight, draw, and mark up your PDFs. • Scanned Look — give a clean PDF the look of a scanned document. • OCR — extract text from images and scanned pages on-device with Google ML Kit. • Convert — PDF to/from Word, Excel, and HTML. • AI Chat with your PDF — ask questions about a document and get answers, powered by Google Gemini. How it works 1. Open QuickPDF — no sign-up, no password to remember. 2. Pick a tool from the home grid. 3. Choose a PDF or image from Files or your photo library. 4. Run the tool. Basic tools process on your device; conversions and AI Chat use a secure backend. 5. Save, share, or open the result in another app. Who it's for • Students and professionals who handle PDFs on the go. • Anyone who needs to sign, merge, or convert a document quickly. • People who want to ask questions about a long PDF without reading every page. Free, Premium & AI usage QuickPDF is free to use and supported by ads. AI Chat is free for 3 queries per day, or watch a rewarded ad for more. QuickPDF Premium is an auto-renewing subscription that removes all ads, unlocks unlimited AI Chat, and enables Sign and Scanned Look. Options: • QuickPDF Premium (Monthly) — US$4.99 per month • QuickPDF Premium (Yearly) — US$29.99 per year Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends; your account is charged for renewal within 24 hours prior to the end of the period. Manage or cancel anytime in your Apple ID account settings. • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://quickpdf.uniqueedge.dev/privacy Privacy & data • Basic tools (merge, compress, split, rotate, reorder, watermark, page numbers, annotate, image conversion, OCR) run entirely on your device — your files are not uploaded. • AI Chat sends the extracted text of your PDF to our secure backend, which forwards it to Google Gemini to generate answers. • File conversions (Word/Excel/HTML) upload the document to a conversion service to process it. • QuickPDF uses an anonymous device-based ID — there is no account and no personal profile linked to you. • Full privacy policy: https://quickpdf.uniqueedge.dev/privacy Support • Support & questions: support@uniqueedge.dev © 2026 UNIQUE-EDGE INNOVATIONS LTD. All rights reserved.
Screenshots
Verdict
The clearest difference is update cadence: Conversion Calculator Plus at every 6 days against QuickPDF's monthly. QuickPDF's advantage is iOS requirement (13.0 vs 17.0). On price, ads, 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
Both are free to download. Conversion Calculator Plus sells 1 in-app purchase, starting at $9.99 per year and QuickPDF sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Conversion Calculator Plus ships an update every 6 days, QuickPDF monthly. The most recent releases landed on October 18, 2026 and September 29, 2026 respectively.
| Parameter | Conversion Calculator Plus | QuickPDF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (15K ratings) — better | — |
| Positive reviews | 68.9% of reviews | — |
| Number of ratings | 15K — better | — |
| Update frequency | Every 6 days — better | Monthly |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 78 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Adysseus | UNIQUE-EDGE INNOVATIONS LTD. |
Bugs and requests
Conversion Calculator Plus
Reported bugs
3 issues- Currency conversion not working
- App gets stuck on consent page
- Unable to get past ads/subscription page
Requested features
3 requests- Add running pace conversions
- Add shoe size converter
- Provide paid ad-free version
QuickPDF
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Conversion Calculator Plus
- No Ads For One Year1 Year trial$9.991 Year
QuickPDF
- QuickPDF Premium (Monthly)$4.991 Month
- QuickPDF Premium (Yearly)$29.991 Year
Questions
Is Conversion Calculator Plus free?
Is QuickPDF free?
Do Conversion Calculator Plus or QuickPDF have ads?
Which is updated more often, Conversion Calculator Plus or QuickPDF?
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