Comparison

SchoolMessenger vs Sound K

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

Head to head
About

SchoolMessenger

Stay connected with your school or district through this app. It provides a unified inbox for notifications and messages, allowing for two-way communication between teachers, parents, and students. Manage your notification preferences and receive alerts for important updates.

Highlights
  • Unified inbox for notifications and messages
  • Two-way teacher-parent-student communication
  • Scrollable notification history
  • Customizable notification preferences
  • Push notifications for alerts
Features
Read full description

The new SchoolMessenger app gives busy parents, students, and staff a powerful way to stay engaged with their school or district, and connect to each other. App Features: - Easy-to-read inbox that captures all SchoolMessenger notifications, and now two-way teacher-parent-student messages (if enabled by school or district) - Scrollable notification view to review all phone, email, and text content in a single place - Detailed preference control allows adjusting notification settings - Push notifications are available for alerts when school or district sends a message Requirements: - For notifications, school or district has SchoolMessenger notification service subscription with SchoolMessenger app enabled - For notifications, valid email address on file with your school or district - WiFi or data plan for internet access - iOS 14+ Note: SchoolMessenger app is not for sending broadcast messages. If you are a SchoolMessenger Communicate notification customer looking to send broadcast messages, please download the SchoolMessenger Admin sender app.

About

Sound K

Features
Read full description

Sound K-9 is a simple sound exposure planner and activity log for dogs. Create sound routines, choose stock sounds, record or import custom audio, set volume and duration, schedule exposure times, and track what has been completed over time. Use Sound K-9 to: • Choose a sound and control playback manually • Play one sound or mix multiple sounds together • Use continuous playback or timed playback • Adjust volume with a slider or step control • Record custom sounds • Import saved audio files from Files • Build or find routines for each dog • Add routine notes • Set scheduled exposure times • View activity history by dog, sound, routine, week, or month Sound K-9 is built for people who want a simple, organized way to manage sound work without extra clutter. Dog records are kept simple, routines are easy to review, and the Activity Log helps show what has been done. The app is local-first. Dog names, routines, custom sounds, notes, and activity history are stored on the device.

Screenshots

SchoolMessenger2 screens
Sound K1 screens

Verdict

The call

The clearest difference is update cadence: Sound K at daily against SchoolMessenger's every 2 months. SchoolMessenger's advantage is iOS requirement (16.0 vs 26.5). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SchoolMessenger ships an update every 2 months, Sound K daily. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
SchoolMessenger versus Sound K: the parameters behind the verdict, then further details
ParameterSchoolMessengerSound K
PriceFreeFree
Rating4.4 (816 ratings) — better—
Positive reviews53.1% of reviews—
Number of ratings816 — better—
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better26.5
Further details — not scored
Size43 MB3 MB
Age rating4+4+
DeveloperPowerSchool Group LLCDefectiveRobot LLC

Bugs and requests

SchoolMessenger

Reported bugs

4 issues
  • Inability to report late arrivals or early departures
  • Attendance reporting not working for some users
  • Syncing issues between app and school records
  • Verification emails not being delivered

Requested features

4 requests
  • Add option to mark all messages as read
  • Improve navigation and message management
  • Implement dark mode and accessibility features
  • Allow parents to initiate messages to teachers

Sound K

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SchoolMessenger

No in-app purchases

None

Sound K

No in-app purchases

Questions

Is SchoolMessenger free?
SchoolMessenger is free to download, with no in-app purchases.
Is Sound K free?
Sound K is free to download, with no in-app purchases.
Do SchoolMessenger or Sound K have ads?
Neither SchoolMessenger nor Sound K shows ads.
Which is updated more often, SchoolMessenger or Sound K?
SchoolMessenger ships an update every 2 months, and Sound K daily. Most recently, SchoolMessenger was updated on November 4, 2026 and Sound K on October 31, 2026.

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