OLM Marker vs ExamScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OLM Marker
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Ứng dụng miễn phí giúp giáo viên chấm điểm trắc nghiệm một cách dễ dàng nhất
ExamScan
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ExamScan helps teachers grade paper multiple-choice tests just by photographing the answer sheet — fast, accurate, and processed entirely on your device. DEAD SIMPLE — ONLY 2 STEPS • No templates to build, no setup, no special app forms to print. • Use the standard answer sheets you already have: (1) load the answer key, (2) snap a photo — done. • A sheet came out skewed or mismarked? Fix it right on the sheet — no need to reconfigure anything. GRADE IN SECONDS • Snap a photo or pick from your library — the app detects filled bubbles and scores the sheet. • Automatically reads the student ID and exam code. • Supports sheets with 3, 4, 5, or 6 options (A–F). BATCH GRADING • Pick many photos from the gallery to grade a whole class at once. • Review the result list — error sheets are clearly highlighted in red. • Re-grade any single sheet if a photo wasn't good enough. EXPORT TO EXCEL • Create an .xlsx file with each student's score, named the way you like. • Share it or save it to Files in one tap. PRIVATE — GRADE RIGHT ON YOUR DEVICE • All recognition and scoring happen right on your device — grading works even offline. • No accounts, no login; your answer sheet images and results are never sent to a server. • The app uses Firebase for anonymous analytics and crash reporting to improve the app (never your answer sheets or results). See our Privacy Policy. CONVENIENT • Built-in "Grade with sample sheets" demo to try instantly — no setup needed. • 5-language interface: English, Vietnamese, Indonesian, Portuguese, Spanish — auto-selected from your device language, switch anytime. • Works on iPhone and iPad. • A "frame check" image shows you why a sheet failed. • Report a problem sheet by email with attached images for support. ANSWER SHEET REQUIREMENTS • Standard A4 sheet with 3 orientation marks at the corners. • Fill solidly with a 2B pencil or pen, one bubble per question. • Download free sample sheets right from the About screen in the app. ExamScan is free with a starter batch of grading credits; earn more through daily login, sharing the app, or watching ads. The app shows advertisements (filtered to general-audience content). Feedback is welcome at: Rubi.ExamScan@gmail.com
Screenshots
Verdict
The clearest difference is ads: OLM Marker at none against ExamScan's shown. OLM Marker also leads on iOS requirement (13.5 vs 17.0). ExamScan's advantage is update cadence (every 2 days vs every 3 weeks). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OLM Marker ships an update every 3 weeks, ExamScan every 2 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.
| Parameter | OLM Marker | ExamScan |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.5 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Tho Ha Duc | Tien Nguyen |
In-app purchases
OLM Marker
No in-app purchases
ExamScan
No in-app purchases
Questions
Is OLM Marker free?
Is ExamScan free?
Do OLM Marker or ExamScan have ads?
Which is updated more often, OLM Marker or ExamScan?
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