Document Scanner vs M91
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Document Scanner
Transform your mobile device into a powerful scanner. Easily capture, enhance, and share documents as PDFs or JPEGs. Features include OCR, e-signatures, and secure document storage.
- Fast mobile scanning
- Optimize scan quality
- E-signature functionality
- OCR text recognition
- Secure document storage
- AirPrint compatibility
- Share PDF/JPEG files
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DocumentScanner is a handy scanner app that will turn your iPhone or iPad into a powerful mobile scanner. Easily scan, save, and share any document in PDF or JPEG format. Scan document into clear & sharp image/PDF, to email, print, or save to cloud. Take this portable document scanner anywhere you go for your daily business needs. It doesn't require an Internet connection as all scans are stored locally on your device. Features: * Fast & Powerful Mobile Scanner Use your phone camera to scan receipts, notes, invoices, articles, business cards, certificates, etc. * Optimize Scan Quality Smart cropping and auto enhancing make the texts and graphics look clear and sharp. * E-signature Sign contracts and share them with your counterparty. It is widely used among real estate agents and in government form filling. * OCR Text Recognition The OCR Text Recognition lets you recognize text from images then edit texts or share text to other apps. * Secure Important Documents If you need to protect your valuable scans, you can set up a password for the whole app or lock particular folders or documents. * AirPrint Documents Instantly print out documents in Document Scanner with a nearby printer via AirPrint. * Share PDF/JPEG Files Easily share documents in PDF or JPEG format with others via email attachment and social media. Save scans to Camera Roll Doc Scanner users scan and manage • Bill, Invoice, Contract, Tax Roll, Business Card… • Article, Note, Book… • Paper notes, Memo, Script, Letter… • Identity Document, Certificate, Credential, Painting… Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://chief-cheque-627.notion.site/Privacy-Policy-2cc6adfdb3748165bbe8d7157b25aaa0
M91
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When AI agents or software need a human, M91 reaches the right person and keeps notifying until somebody responds. Your systems can do the work. M91 handles the one moment that needs a person: an approval, a decision or an action. The alert lands on the right phone, the answer goes straight back to your system, and work continues. SOFTWARE DETECTS → HUMAN ACTS → WORK CONTINUES WHERE TEAMS USE M91 • AI agents: approve or reject an action before your agent goes ahead • Payments: know the moment money stops moving • Infrastructure: wake the on-call person when something breaks at 2 AM • Devices and IoT: alert someone when a sensor, cold room or device needs attention • Security: reach the responsible person the instant an event is detected • Customer support: bring in a human when the bot runs out of answers • Sales and CRM: give a hot lead an owner straight away • Reminders: get things checked, approved or acknowledged on time WHAT M91 GIVES YOU • Answer buttons set by you or your AI, like "Approve", "Reject" or "I'm on it" • Critical alerts that escalate to a phone call if nobody answers • Send to a team and let one person take ownership • Broadcast to a whole channel • See who acted and who ignored • Attachments and notes on every alert, so people can decide without switching apps SET UP IN MINUTES There's no SDK to install. Copy your send link from the app and paste it into a workflow tool, a coding agent or your own code. M91 works with viaSocket, n8n, Zapier, Make, popular AI agent frameworks and anything that can send an HTTP request. Your first alert lands on your own phone. FREE. FOREVER. Every feature, every alert, every person on your team. No trial, no card, no seat count. YOU DEFINE. M91 DELIVERS. M91 MANAGES. Tell M91 what needs attention and who should handle it. M91 delivers the alert, records every response and tracks it until it's handled, closed or expires. M91. Alerting made easy. Built by MSG91.
Screenshots
Verdict
The clearest difference is in-app purchases: M91 at none against Document Scanner's 3. M91 also leads on update cadence (every 9 days vs every 3 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
Both are free to download. Document Scanner sells 3 in-app purchases, starting at $4.99 per month. M91 asks for nothing beyond the download.
Document Scanner ships an update every 3 months, M91 every 9 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.
| Parameter | Document Scanner | M91 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (326 ratings) — better | — |
| Positive reviews | 92.2% of reviews | — |
| Number of ratings | 326 — better | — |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 33 MB | 30 MB |
| Age rating | 4+ | 17+ |
| Developer | Devkrushna Infotech Private Limited | Walkover Web Solutions Pvt. Ltd. |
Bugs and requests
Document Scanner
Reported bugs
4 issues- Signature option not working
- Blurry image capture
- Unable to scan documents
- App crashes or freezes
Requested features
5 requests- Search functionality for saved documents by name
- Batch editing option for multiple pages
- Signature feature improvement
- Reduce or remove ads
- Increase page scanning capacity
M91
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Document Scanner
- Premium (1 Month)$4.991 Month
- Premium (1 Year)3 Days trial$19.991 Year
- Remove Ads forever$8.99
M91
No in-app purchases









