Comparison

PDF Scanner vs Echo

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

Head to head
About

PDF Scanner

Features
Read full description

Turn your photos into clean, professional PDFs in seconds. Smart PDF Scanner is a fast, minimal, and powerful document scanner designed to make scanning effortless. Capture documents, enhance them instantly, and convert them into high-quality PDFs โ€” all in just a few taps. Perfect for scanning receipts, notes, contracts, invoices, and more. --- KEY FEATURES โ€ข Scan documents instantly using your camera โ€ข Automatically enhance and clean your scans โ€ข Create multi-page PDFs โ€ข Export and share PDFs โ€ข Extract text from documents (OCR) โ€ข Convert scans into editable text --- FAST & EASY TO USE No complicated tools. Just point, scan, and get a clean result instantly. Designed for speed and simplicity. --- SMART OCR (TEXT RECOGNITION) Easily extract text from your scanned documents. Copy, edit, or export text in seconds. --- FREE & PREMIUM Free Version Enjoy essential scanning features with up to 3 lifetime scans and basic PDF export. Free Trial Start a 3-day free trial and unlock all Premium features with no limitations. Premium โ€ข Unlimited scans โ€ข Advanced OCR (Text Recognition) โ€ข Export text from scanned documents โ€ข Ad-free experience --- PRIVACY FIRST All processing happens entirely on your device. Your documents are never uploaded to or stored on external servers. --- Download now and start scanning in seconds. Privacy policy: https://sites.google.com/view/scannerapp-pp Terms of service: https://sites.google.com/view/scannerapp-tos

About

Echo

Features
Read full description

Unlock the full potential of artificial intelligence with the ultimate AI Prompt Library. Whether you are a designer, digital marketer, developer, or writer, this app provides an expertly curated gallery of high-performing prompts to deliver flawless results every single time. Key Features: Infinite Artistic Styles: Explore stunning visuals, from whimsical 3D papercraft and vector illustrations to ultra-realistic commercial brand concepts. Commercial & Branding Ready: Instantly access professional prompts tailored for high-end product ads, logos, and cohesive brand designs. Beyond Images: A fully categorized ecosystem including optimized prompts for writing, smart coding assistants, and daily productivity workflows. One-Tap Seamless Copy: No more manual typing. Copy complex prompt strings, aspect ratios, styles, and exact parameter configurations with a single tap. Clean Minimalist Design: Navigating your creative workflow has never been easier with our intuitive, fast, dark-mode layout. Stop guessing parameters. Start creating. Download now and elevate your AI generations today! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PDF Scanner4 screens
Echo3 screens

Verdict

The call

The clearest difference is ads: Echo at none against PDF Scanner's shown. Echo also leads on update cadence (weekly vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PDF Scanner sells 3 in-app purchases, starting at $3.99 per 7 days and Echo sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PDF Scanner ships an update every 2 months, Echo weekly. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

Scorecard2 real differences ยท 4 level
PDF Scanner versus Echo: the parameters behind the verdict, then further details
ParameterPDF ScannerEcho
PriceFreeFree
Update frequencyEvery 2 monthsWeekly โ€” better
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.015.1 โ€” better
Further details โ€” not scored
Size17 MB52 MB
Age rating4+12+
DeveloperIsinsu Arici TanKhaled Almare

In-app purchases

3 purchases

PDF Scanner

Subscriptions2
  • Weekly Subscription$3.997 Days
  • Yearly Subscription3 Days trial$9.991 Year
One-time1
  • Lifetime Access$6.99
2 purchases

Echo

Subscriptions2
  • Echo Premium$4.991 Month
  • Echo Premium$49.991 Year

Questions

Is PDF Scanner free?
PDF Scanner is free to download, with in-app purchases available.
Is Echo free?
Echo is free to download, with in-app purchases available.
Do PDF Scanner or Echo have ads?
PDF Scanner shows ads; Echo does not.
Which is updated more often, PDF Scanner or Echo?
PDF Scanner ships an update every 2 months, and Echo weekly. Most recently, PDF Scanner was updated on November 9, 2026 and Echo on November 5, 2026.

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