Comparison

Device Tracker vs Sudoku Solver

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

Head to head
About

Device Tracker

Locate misplaced Bluetooth devices like headphones, smartwatches, and phones. This app uses a smart radar and last seen location features to help you find your items quickly, preventing costly replacements.

Highlights
  • Smart Device Radar
  • Last Seen Location Map
  • Earbud Finder
  • Play Sound Feature
  • Supports AirPods, Beats, Bose
Features
Read full description

Easily find your lost Bluetooth devices like AirPods, iPhones, Apple Watches, Beats, Bose headphones, Powerbeats Pro, and more. Similar to an AirTag, our app helps you avoid costly replacements by quickly locating misplaced items at home, work, or on the go. Perfect for recovering devices for you or your family. Features: Smart Device Radar: Detect nearby Bluetooth devices and follow the signal strength to pinpoint their location. Last Seen Location: Check where your device was last connected and see it on an interactive map with timestamp details. Earbud Finder: Designed for AirPods, Beats, and Bose headphones to help you quickly locate lost earbuds. Play Sound: Make supported devices emit a sound for quick and easy tracking. Subscription Information: Weekly Subscription: $5.99/week Monthly Subscription: $14.99/month Annual Subscription: $29.99/year Payment is charged to your Apple ID account upon purchase confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Renewal charges occur within 24 hours before the current subscription period concludes. Manage and cancel subscriptions anytime in your App Store account settings. Privacy Policy - https://docs.google.com/document/d/18O3VZqOXndfDoyfBUMABlW88kR1WCOr1BJdVe5_Gjxg/edit?usp=drive_link Terms Of Use - https://docs.google.com/document/d/1MyyAwoZH0MxfyjoK-jL98p8wCW_lDuufeuArHwnfu7k/edit?usp=drive_link

About

Sudoku Solver

Features
Read full description

The only scanner that solves a Samurai. Point your camera at a printed Sudoku and get the solution. Not just the standard 9×9 — Sudoku Solver reads the five-grid Samurai too, the one no other scanner will touch. HOW IT WORKS Hold your phone over the puzzle. It finds the grid, reads the digits, and works out the answer — usually in about a second. Nothing to type in, nothing to line up. IT TELLS YOU HOW, NOT JUST WHAT Every solution names the techniques the puzzle actually needed — naked singles, hidden pairs, X-Wings — so you can see where you were stuck. Want to work through it properly? One tap opens the exact board in Samuraiku and walks you through it step by step. SHARE THE ANSWER Send or print a clean solution card with the original clues in bold, so you can check your own work against it. WHAT IT DOESN'T DO No ads. No subscription. No account. Nothing is uploaded — the camera image never leaves your phone, and it's never saved to your photo library. You pay once. Classic 9×9 and Samurai. Works offline. Made by the people behind Samuraiku.

Screenshots

Device Tracker4 screens
Sudoku Solver4 screens

Verdict

The call

The clearest difference is price: Device Tracker at Free against Sudoku Solver's $3.99. Device Tracker also leads on update cadence (fortnightly vs every 2 months). Sudoku Solver's advantage is in-app purchases (none vs 4). On ads, 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

Device Tracker is free to download; Sudoku Solver costs $3.99 up front. Device Tracker sells 4 in-app purchases, starting at $6.99 per 7 days. Sudoku Solver asks for nothing beyond the download.

UpkeepUpdate frequency

Device Tracker ships an update fortnightly, Sudoku Solver every 2 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Device Tracker versus Sudoku Solver: the parameters behind the verdict, then further details
ParameterDevice TrackerSudoku Solver
PriceFree — better$3.99
Rating4.1 (45 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings45 — better—
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS1717.0
Further details — not scored
Size28 MB2 MB
Age rating4++4
DeveloperAnand PorayKarl Groethe

In-app purchases

4 purchases

Device Tracker

Subscriptions4
  • Get Full Access3 Days trial$6.997 Days
  • Get Full Access$6.997 Days
  • Get Full Access3 Days trial$14.991 Month
Show 1 more
  • Get Full Access3 Days trial$29.991 Year
None

Sudoku Solver

No in-app purchases

Questions

Is Device Tracker free?
Device Tracker is free to download, with in-app purchases available.
Is Sudoku Solver free?
Sudoku Solver costs $3.99, with no in-app purchases.
Do Device Tracker or Sudoku Solver have ads?
Neither Device Tracker nor Sudoku Solver shows ads.
Which is updated more often, Device Tracker or Sudoku Solver?
Device Tracker ships an update fortnightly, and Sudoku Solver every 2 months. Most recently, Device Tracker was updated on October 30, 2026 and Sudoku Solver on October 28, 2026.

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