Karri vs The Invigilator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Karri
This app simplifies payments to schools and community organizations, eliminating the need for cash. It offers instant payments, reminders for upcoming events, and a secure digital wallet for easy transactions. The goal is to create safer environments by reducing cash handling.
- Instant payments via MasterCard/Visa
- Digital wallet for stored funds
- Payment reminders for events
- Add events to calendar
- Transaction history
- Manage multiple children's payments
- Pay for school items and fees
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Karri allows you to make safe, quick and convenient payments back to your school or other community organization. So far, we’ve removed millions of dollars of cash from schools in South Africa and Australia. Download the app, register an account (in less than 60 seconds), choose your preferred payment mechanism and make an instant payment back to your organization. Forget to pay? No problem. Karri will send you a friendly reminder so you or your child never miss an event/outing/fundraiser again. Help us remove cash from schools and community organizations making them a safer place for all. - Make an instant payment to your organization from your MasterCard or Visa - Store funds in your Karri wallet to make sure you never miss a payment again - Receive a convenient reminder if you forget about a payment - Add all events to your calendar, straight from the Karri app - No bank charges! Karri is completely free to use. Karri has made paying your school, church or sports club insanely fast and easy. - Check all your transactions on the Karri transaction history - Add your children to the app so you can make payments on their behalf - Pay for stationery, textbooks or school fees simply and easily from your Karri app. - Karri supports numerous payment types. Sports tours or ticket sales? No problem Download our free app to make payments and orders to your organization simple and hassle-free Download the Karri app for a secure mobile wallet, instant payments, instant orders and so much more! To make a payment, scan the QR code provided by your school and choose the amount. Alternatively, they may request (if you've given them permission) from you directly. Welcome to a world beyond cash in envelopes and painful bank transfers. Welcome to Karri.
The Invigilator
This app helps examiners reduce risks associated with online exams and assessments. It offers various proctoring tools to enhance security for remote testing, enabling controlled and monitored non-venue examinations.
- Online exam risk mitigation
- Mobile phone proctoring
- Variety of security tools
- Non-venue based examinations
- Controlled and monitored assessments
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The Invigilator assists examiners mitigate online assessment and examination risk through mobile phone proctoring. Examiners can choose from a variety of different risk mitigating tools depending on the level of security required for each exam and assessment. The Invigilator app allows for non venue based examinations and assessments to be written in a more controlled and monitored way
Screenshots
Verdict
The clearest difference is review sentiment: Karri at 91% against The Invigilator's 29%. Karri also leads on rating (4.8 vs 1.0) and ratings volume (229 vs 1). The Invigilator's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (13.0 vs 15.1). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Karri holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Karri has 229 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 91% of Karri's written reviews are positive against 29% of The Invigilator's.
Karri ships an update every 5 weeks, The Invigilator every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Karri | The Invigilator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (229 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 91.3% of reviews — better | 28.8% of reviews |
| Number of ratings | 229 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 65 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Education Payment Solutions (Pty) Ltd | Back Alley Technology |
Customer experience
Karri
The Invigilator
User reviews
Karri
From 229 App Store ratingsWhat we love
- 🚀 Quick and efficient service
- 👍 User-friendly and convenient app
- 🌟 Exceptional customer support
- ✅ Seamless payment processing
- 💡 Proactive issue resolution
Room to improve
- 😞 Links for help don't work
- ❌ No support available
- 📅 Inappropriate notification timing
- 🚫 Bank cards not linked for overseas users
- ❓ Missing payments
The Invigilator
From 1 App Store ratingsWhat we love
- 👍 User-friendly interface
- 🚀 Seamless university website integration
- 🔒 Ensures academic integrity
- ✅ Works when instructions followed
- ✅ Constantly improving performance
Room to improve
- 🐛 Frequent app crashes
- 🐛 Submission errors
- 🐛 Login/signup issues
- 🐛 Inconsistent performance
- 🐛 "Out of app" false flags
Bugs and requests
Karri
Reported bugs
10 issues- Links for help don't work
- No support available
- Timing of some messages inappropriate (early Sunday morning)
- Bank cards not linked for overseas users
- Payments missing
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- Constant error issues
- Cannot see calendar/transactions, cannot sign out
- App not secure (potential fraud)
- Payments going missing/delayed
- Notifications not dismissible
Requested features
11 requests- More health or snack options in food menu
- Menu changes every other week
- Small pizzas, borewos rolls, ice cream, steak pies, donuts, muffins, brownies, fruit salad options
- Video tutorial on common problems
- Basket of items for simultaneous payment
Show 6 moreShow fewer
- Option to buy single items or combo packs
- Kid-friendly chip flavors (spicy, salsa, sour cream & onion)
- Ability to dismiss notifications
- List of paid/unpaid learners for teachers
- Dark mode option
- Advanced analytics dashboard
The Invigilator
Reported bugs
46 issues- App wipes recordings
- App closes immediately
- Error prompts appear
- Kicking out of exams
- Laptop switching off
Show 41 moreShow fewer
- Signing out during exams
- Upload scripts when not needed
- Verification requests not uploading
- App not working on iPhone 5s
- Wasted exam time
- Network stability errors
- Not recognized by institution
- No prompt to upload script
- No way to submit answers
- Helpdesk not responding
- Irrelevant helpdesk replies
- Random beeps during exam
- Not working on iPhone
- App stating out of app when not
- Null error message on upload
- Slow to take pictures
- Done button not working
- App closed during photo taking
- Support cannot help without screenshot
- Not letting upload script
- Error during invigilation start
- App stating not connected to WiFi
- App drained battery significantly
- No low battery alerts
- Error messages during upload
- Continuous error messages
- App uploading files before time
- Claims user minimized app when not
- App not uploading files
- App not letting user log in
- App stating no internet connection
- App timed out test
- App requires PDF upload when not applicable
- App timer incorrect
- App malfunctioned and kept closing
- App frozen after exam
- Version not compatible with iPhone 5
- App requires new phone for compatibility
- App not picking up early exam submission
- App flags sound if whispering question
- App requires GPS/location services
Requested features
5 requests- Fingerprint/face recognition login
- Customizable timer alerts
- Option to exit exam early
- Sound notification for exam completion
- Improved support responsiveness
In-app purchases
Karri
No in-app purchases
The Invigilator
No in-app purchases
Questions
Is Karri free?
Is The Invigilator free?
Which has better reviews, Karri or The Invigilator?
Do Karri or The Invigilator have ads?
Which is updated more often, Karri or The Invigilator?
Other comparisons
