Sigma Academy vs JoeKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sigma Academy
This educational app allows students, parents, and teachers to track grades, exams, and attendance. It facilitates question-solving with automatic assessment and provides a platform for students to ask teachers questions, with answers shared for all. Teachers can also share news and upload educational resources like PDFs and past exams.
- View grades, exams, and attendance
- Solve questions with automatic correction
- Ask teachers questions and share answers
- Receive news and announcements
- Upload and access educational resources (PDFs, past exams)
- View teacher profiles and contact information
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The app offers an excellent service for students and parents and teacher Allows the user to view student's grades, exams, attendance, and absence Allows the user to solve questions with the possibility of automatic correction and assessment of the level of the student in each lesson The student can ask the teacher what he needs in the curriculum and answered questions are presented to all students to take advantage of the answers The teacher can tell students and parents any news to display it on the home page of the app Instructors can upload PDF files with curriculum, question forms, previous exams, etc. to facilitate student access to resources Allows the user to view the CV of the teacher and phone numbers for communication and class schedules
JoeKey
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JoeKey is the first QR-code based E- Learning app, This application targets students from all faculties of all Universities through detailed videos of their course contents. The application is under the authority of a staff of professional doctors.
Screenshots
Verdict
The clearest difference is in-app purchases: Sigma Academy at none against JoeKey's 1. Sigma Academy also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, ads 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
Both are free to download. JoeKey sells 1 one-off in-app purchase. Sigma Academy asks for nothing beyond the download.
Sigma Academy ships an update monthly, JoeKey every 5 weeks. The most recent releases landed on October 30, 2026 and October 12, 2026 respectively.
| Parameter | Sigma Academy | JoeKey |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 72 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Khaled Mohamed | Joseph Ibrahim |
In-app purchases
Sigma Academy
No in-app purchases
JoeKey
- C# Course$0.99
