Comparison

EdChanger Pro vs K

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

Head to head
About

EdChanger Pro

This app offers a data-driven system for classroom observation and teacher development. It tracks student engagement in real-time, provides instant analytics, and offers a library of professional development resources. Designed to improve teaching practices through observation and research.

Highlights
  • Real-time student engagement tracking
  • Multiple observation categories
  • Instant analytics and engagement ratios
  • Professional development resources
  • Customizable observation routines
  • Teaching best practices library
Read full description

EDChanger Pro revolutionizes classroom observation and teacher professional development with an intuitive, data-driven approach to tracking student engagement. Key Features: Real-time student engagement tracking Multiple observation categories including Class Routine, Teaching Expectations, and more Instant analytics and engagement ratios Research-backed professional development resources Track student engagement patterns across different teaching activities Easy-to-use grid-based observation system Comprehensive teaching best practices library Access to current educational research and articles Professional development podcast recommendations Expert educator social media connections Book recommendations from leading education experts Customizable observation routines Perfect for: School administrators Instructional coaches Teacher mentors Department heads Teachers seeking self-improvement Professional development coordinators

About

K

Features
Read full description

Observation Assistant helps K–12 educators turn classroom evidence into clear, coaching-ready feedback—on iPhone and on the web. Built by a practicing school administrator, Observation Assistant is designed for reflection and professional growth, not formal evaluation or employment decisions. WORK ON PHONE OR WEB • Same account on iOS and at app.observationassistant.com • Record on your phone, review and finish on your laptop—or the other way around • Sign in with email, Google, or Sign in with Apple TWO WAYS TO USE IT • Individual — observe and reflect on your own teaching • Observer — organize observations for multiple teachers in one place FROM RECORDING TO REPORT • Record classroom audio (3 minutes to 1 hour 40 minutes) • Attach lesson materials with photos or documents • Get a time-stamped transcript with automatic PII redaction • Generate summary and detailed coaching reports grounded in what happened in the room • Set teaching preferences (grades, subjects, experience) so feedback fits the classroom FAIR, TRANSPARENT PLANS • Plans are based on completed observations—not hidden tiers • Try 3 observations free over 14 days from your first recording • Monthly plans include rollover; annual plans grant the full year up front • Optional +25 observation packs never expire • See your remaining balance anytime in Settings PRIVACY BY DESIGN • Raw audio is deleted after successful transcription • Personally identifiable information is automatically redacted in transcripts • Your data is not used to train AI models • Data is encrypted in transit • Delete your account in Settings when you no longer need the service WHO IT'S FOR • Instructional coaches • School administrators • Teacher leaders and mentors • Reflective classroom educators Observation Assistant supports thoughtful teaching practice without replacing professional judgment. It helps you see your teaching more clearly—and talk about it with evidence. Terms: https://www.observationassistant.com/terms-conditions Privacy: https://www.observationassistant.com/english-privacy-policy

Screenshots

EdChanger Pro4 screens
K4 screens

Verdict

The call

The clearest difference is in-app purchases: EdChanger Pro at none against K's 7. K's advantage is update cadence (every 3 weeks vs every 2 months). On price, 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

Both are free to download. K sells 7 in-app purchases, starting at $6.99 per month. EdChanger Pro asks for nothing beyond the download.

UpkeepUpdate frequency

EdChanger Pro ships an update every 2 months, K every 3 weeks. The most recent releases landed on October 7, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
EdChanger Pro versus K: the parameters behind the verdict, then further details
ParameterEdChanger ProK
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.4
Further details — not scored
Size3 MB54 MB
Age rating4+17+
DeveloperJaime BertranObservation Assistant LLC

In-app purchases

None

EdChanger Pro

No in-app purchases

7 purchases

K

Subscriptions6
  • Individual Monthly$6.991 Month
  • Observer Monthly$9.991 Month
  • Snapshot Monthly$9.991 Month
Show 3 more
  • Individual Annual$39.991 Year
  • Observer Annual$59.991 Year
  • Observer Unlimited$99.991 Year
One-time1
  • Observations: 25 Pack$39.99

Questions

Is EdChanger Pro free?
EdChanger Pro is free to download, with no in-app purchases.
Is K free?
K is free to download, with in-app purchases available.
Do EdChanger Pro or K have ads?
Neither EdChanger Pro nor K shows ads.
Which is updated more often, EdChanger Pro or K?
EdChanger Pro ships an update every 2 months, and K every 3 weeks. Most recently, EdChanger Pro was updated on October 7, 2026 and K on October 30, 2026.

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