Comparison

Sonar vs Smart Printer App

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

Head to head
About

Sonar

This app sends your location via loud Morse code and ultrasonic alarms in emergencies. It can also help you find your devices by sound in everyday situations.

Highlights
  • Morse code distress signal
  • Ultrasonic alarm for K-9 units
  • Location broadcasting
  • Device finder by sound
  • Emergency alerts
Features
Read full description

Imagine yourself in the unfortunate situation where you are trapped under debris after an earthquake or a typhoon disaster or buried under meters of snow as a result of an avalanche. Your watch will most possibly be the only, within reach of access to press a button. Press it and your phone will be transmitting a loud Morse code, as an alarm, indicating your altitude or depth in case rescue is close looking out for you. Simultaneously, an ultrasonic alarm is activated so a K-9 rescue team can listen from bigger distance. As part of your everyday life, you can just use it to locate by sound your favorite device in home, office and outdoors!

About

Smart Printer App

Easily print photos, documents, web pages, and scanned files from your iPhone to any Wi-Fi printer without needing drivers or cables. Offers full print control and a built-in scanner for convenience.

Highlights
  • Print photos, PDFs, documents, and web pages
  • Built-in document scanner with edge detection
  • Full print control (copies, paper size, color/B&W)
  • Live preview and page count
  • Recent files library for quick reprints
  • Works with all major Wi-Fi printer brands
Features
Read full description

Print anything from your iPhone — photos, PDFs, documents, web pages and scans — on any Wi-Fi printer. No drivers, no cables, no fuss. Smart Printer App finds every AirPrint and network printer on your Wi-Fi in seconds and works with all major brands: HP, Canon, Epson, Brother, Samsung, Kodak, Lexmark, Xerox, Ricoh, Pantum and more. WHAT YOU CAN PRINT • Photos from your library — sharp, true-to-color prints • PDF files and documents (Word, text, RTF) • Web pages — cleanly paginated and easy to read • Emails, tickets, labels, forms and boarding passes • Documents captured with the built-in scanner BUILT-IN DOCUMENT SCANNER Scan with your camera: automatic edge detection, multi-page support and instant PDF conversion. Print your scan or share it anywhere. FULL PRINT CONTROL • Copies, paper size, color or black & white, double-sided printing • Live preview with page count before every job • Recent files library — reprint anything in one tap WHY SMART PRINTER APP? • Works with any Wi-Fi printer, old or new • Real-time printer status — see that your printer is online before you print • Set up once, print forever. Simple, fast, reliable. SUBSCRIPTION Optional auto-renewing subscriptions unlock unlimited printing. Payment is charged to your Apple ID account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Note: requires an AirPrint- or IPP-compatible printer on the same Wi-Fi network. All brand names are trademarks of their respective owners; compatibility does not imply endorsement. Terms Of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://app.notion.com/p/Privacy-Policy-for-Printzy-39d3debffec280949066dd2cdf3e313b?source=copy_link

Screenshots

Sonar1 screens
Smart Printer App4 screens

Verdict

The call

The clearest difference is review sentiment: Smart Printer App at 100% against Sonar's 33%. Smart Printer App also leads on update cadence (every 9 days vs every 6 months). Sonar's advantage is in-app purchases (none vs 4) and device support (3 vs 1). On price and ads 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. Smart Printer App sells 4 in-app purchases, starting at $7.99 per 7 days. Sonar asks for nothing beyond the download.

UpkeepUpdate frequency

Sonar ships an update every 6 months, Smart Printer App every 9 days. The most recent releases landed on September 30, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
Sonar versus Smart Printer App: the parameters behind the verdict, then further details
ParameterSonarSmart Printer App
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings—3 — better
Update frequencyEvery 6 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS8.2 — better16.0
Further details — not scored
Size5 MB25 MB
Age rating4+4+
DeveloperKonstantinos VogiatzakisOrvin Studio

Customer experience

Sonar

All ratings6 ratings
Positive50.0%
Neutral33.3%
Negative16.7%
Written reviews3 reviews
Positive33.3%
Neutral66.7%
Negative0.0%

Smart Printer App

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sonar

No in-app purchases

4 purchases

Smart Printer App

Subscriptions3
  • Weekly Premium$7.997 Days
  • Annual Premium Offer$29.991 Year
  • Annual Premium$39.991 Year
One-time1
  • Lifetime Premium$49.99

Questions

Is Sonar free?
Sonar is free to download, with no in-app purchases.
Is Smart Printer App free?
Smart Printer App is free to download, with in-app purchases available.
Do Sonar or Smart Printer App have ads?
Neither Sonar nor Smart Printer App shows ads.
Which is updated more often, Sonar or Smart Printer App?
Sonar ships an update every 6 months, and Smart Printer App every 9 days. Most recently, Sonar was updated on September 30, 2026 and Smart Printer App on October 15, 2026.

Other comparisons