DottedSign vs CoLine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DottedSign
Streamline your document signing process with this app. Easily sign documents yourself or request legally binding signatures from others. Manage tasks, track progress, and import/share files securely from your mobile device.
- Request signatures from multiple signers
- Sign documents yourself with freehand drawing
- Personalize signatures with stamps and photos
- Import documents from various sources
- Track signature tasks with visual progress
- Secure digital audit trails
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Pioneering in eSign on mobile devices, DottedSign lets you effortlessly sign documents and get signatures from others in a legal and secure process. Stop wasting time emailing signers, printing copies, and faxing paper. Use DottedSign to complete your work, including NDAs, sales contracts, lease agreements, permission slips, financial agreements, and more. Simply import your document, sign or request signatures, and send. Ensure your important business cases do not slip through the cracks. KEY FEATURES GET SIGNATURE FROM MULTIPLE SIGNERS .Invite signers by adding them straight from your contact list or entering their emails (Google Contact supported) .Remote signing - Assign fields to signers in a designated order, including signatures, initials, stamps, texts, and dates .Front desk signing - Collect signatures in person, with pre-made templates .Color-coded fields to navigate your signers on where to fill in .Add an Editor to your task to help you assign signers and set up fields in your signing process. SIGN DOCUMENTS YOURSELF & PERSONALIZE YOUR SIGNATURES .Create signatures with freehand drawing .Make stamps by using your camera or photos .Pre-fill your personal information and drag and drop it to the document .Add signatures, initials, texts, images, hyperlinks, and dates to documents .Adjust the font size and text alignment to your liking .Remove or crop backgrounds for signature stamps .Signer can sign with the company seals authorized by the Admin. .Group multiple checkboxes or radio buttons together to create multiple options. MANAGE SIGNATURE TASKS .Visual progress bar - Monitor signature tasks by intuitively checking all signers’ status .Timeline of Personal Activities - Display and record activities of all your personal tasks .Search tool - Find your documents easily by searching with names of people or documents .Custom message - Leave messages to all recipients .Auto reminder & expiry date setting - Automatically send reminders to notify anyone who has not signed documents yet .Change signer or editor: Replace a signer or editor on a sent document, with the option to submit change requests to the sender or reassign the role to someone else. Sender can replace,,, or on a sent document .Decline signing or editing – Sender can manage the recipient's permission to decline the request and provide a reason in case the document requires further amendment .Void the task – Signer can stop the signing process in the middle of the workflow before the document is signed by all parties. .Delete completed and canceled signing tasks that are no longer needed, or move them to archive IMPORT AND SHARE DOCUMENTS WITH EASE .Get documents from camera, photos, the file app, email attachments, and the web .Import documents from cloud services, including OneDrive and Google Drive .Share the document via a file link to open the file directly in the web browser SECURITY AND LEGALITY .Digital audit trails - Record every change made to the document for evidence .Protected signing process - Ensure confidentiality of paperless signing, encrypted by TLS/SSL, AES-256, and RSA-2048. .Email & SMS secure password to identify signer identity .Digital certificates issued by the AATL authorized CA safeguard signers' identity authentication and signature validation. .Certified with ISO27001, DottedSign uses public key infrastructure (PKI) to securely encrypt and protect your signing process. Upgrade to Pro for advanced features, and choose Business to manage your team with ease—assign roles, collaborate seamlessly, and oversee all documents efficiently. Terms of Service: https://www.dottedsign.com/terms_of_service Privacy Policy: https://www.dottedsign.com/privacy_policy NEED HELP? Visit https://support.dottedsign.com/ or contact us at support@info-dottedsign.com.
CoLine
This business communication app offers dynamic posts, text chat, and voice calls to improve cross-departmental efficiency. It integrates company announcements, allows cloud file sharing, and supports API integrations for flexible system compatibility.
- Dynamic posts for announcements
- Text chat and voice calls
- Cloud file sharing
- Cross-departmental communication
- API integration support
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【 四大特點說明 】 ◼ 多元通訊有效溝通 可使用動態貼文、文字聊天、語音通話等多元溝通管道,貫穿企業層級,解決跨部門溝通困難,增進溝通效率與工作成效。 ◼ 動態牆整合零碎公告 即時佈達企業公告,整合零碎資訊,並藉由已讀、未讀功能,了解訊息傳遞現況,加強企業內部橫向聯繫。 ◼ 雲端共享檔案傳輸 動態貼文與聊天室都能上傳檔案,也能開啟「檔案共享」功能,讓同仁可自行下載雲端檔案,傳輸資料快速零阻礙。 ◼ 支援多種API串接 可支援多種雙向API,迎合企業系統應用整合需求,提高系統相容可行性,提供企業經營更大的彈性,串接無負擔。
Screenshots
Verdict
The clearest difference is in-app purchases: CoLine at none against DottedSign's 4. CoLine also leads on review sentiment (96% vs 69%). DottedSign's advantage is iOS requirement (13.0 vs 15.0). 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. DottedSign sells 4 in-app purchases, starting at $9.99 per month. CoLine asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.
| Parameter | DottedSign | CoLine |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (21 ratings) — better | — |
| Positive reviews | 69.4% of reviews | 95.7% of reviews — better |
| Number of ratings | 21 — better | — |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 97 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Kdan Mobile Software LTD | MITAKE |
Customer experience
DottedSign
CoLine
In-app purchases
DottedSign
- [Legacy] DottedSign (Monthly)$9.991 Month
- DottedSign Pro (Monthly)$14.991 Month
- [Legacy] DottedSign (Annual)$59.991 Year
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- DottedSign Pro (Annual)$95.991 Year
CoLine
No in-app purchases






