DeepSign vs Cleanbook Contact
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DeepSign
Digitally sign and send any document or contract securely and legally from your phone. Verify identities for free with an integrated app. Track signing progress in real-time.
- Sign and send PDFs and contracts
- Legally valid eSignatures
- Send sign requests and add co-signers
- Free ID validation with DeepID
- Signature history
- Secure data storage in Switzerland
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DeepSign lets you digitally sign and conclude any agreement faster, easier, from anywhere. Your digital signature with DeepSign is legally valid according to Swiss and EU regulations, meaning you can sign contracts, health care documents, leases and rental agreements, NDAs and more – right from your phone across all Europe. And DeepSign lets you verify your identity for free with our integrated DeepID app. DeepSign is brought to you by DeepCloud AG and securely based in Switzerland. SIGN PDFs & CONTRACTS ON THE GO Upload any document or contract and sign with your digital signature from wherever you are. MONITOR PROGRESS AND GET UPDATES IN THE APP Keep track of who has signed, and who still needs to, with real-time signing updates. FREE INTEGRATED DIGITAL ID, LEGALLY VALID eSIGNATURES Verify your and your co-signers’ IDs remotely with our free, integrated app, DeepID. ID verification is necessary for your eSignature to have the strongest level of legal validity and security. FEATURES • Sign and send PDFs and contracts: Sign documents with a few clicks – no printing, scanning, or mailing. • Legally valid eSignatures: Compliant with Swiss (ZertES) and EU (eIDAS) regulations. • Send sign requests, add co-signers: Invite individuals directly through the app to digitally sign a document. • Free ID validation: Verify your and co-signers’ IDs for free with our native digital identity app, DeepID – say no to 3rd party apps. • Signature history: All documents signed within the last 14 days are available directly in the app. • Secure data storage: All your data is hosted in a secure Swiss cloud for the highest data security. • International compliance: Digital ID complies with international ETSI standards. DeepSign lets you sign documents easily, securely and legally. Download the app and start signing contracts digitally today! SECURE DATA STORAGE IN SWITZERLAND - Your data is managed through our ISO 27001:2013-certified cloud solution. - Your data is yours: You and your co-signers fully control your own personal data, which means no unauthorised access or data sharing. - Secure Swiss storage: Your confidential documents are securely stored in Switzerland- based data centres. CREATE THE MOST COMMON ELECTRONIC SIGNATURES RECOGNISED BY INTERNATIONAL LAW QES: Qualified Electronic Signature - Most secure - For documents with high liability risk - Equivalent of handwritten signature under Swiss (ZertES) and EU law (eIDAS) SES: Simple Electronic Signature - Easiest solution - For documents with low liability risk - Does not replace a handwritten signature START WITH FREE eSIGNATURES, THEN PAY FOR WHAT YOU NEED FREE SIGNATURES: Get 5 SES (Simple Electronic Signature) and 2 QES (Qualified Electronic Signature) for free when you sign up. Additional signatures can be purchased directly in the app through your DeepSign account or invoiced to your organisation. More than 10M digital signatures have already been executed with DeepSign. Download the app and digitally sign your next contract today! Support Need help with your DeepSign app? Get in touch at support@deepcloud.swiss.
Cleanbook Contact
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Your address book is full of duplicates, names you no longer remember, and entries with half a phone number. Cleanbook turns cleanup into a quick swipe session — keep what matters, drop the rest. WHAT IT DOES • Sweep sessions: swipe right to keep, swipe left to delete. Haptic feedback, undo, and a progress ring keep you in the flow. • Smart home categories: Duplicates, Ghosts, No phone, Rare contacts, Approved (your keep-list), and All contacts. • Side-by-side duplicate compare with field-level merge — pick the right name, the better company, the cleaner phone, the email worth keeping. • Trash with a 30-day safety net: every deletion is reversible. Restore a contact and it comes back exactly as it was, including notes and organization. KEY FEATURES • On-device duplicate matching by phone, email, and name. • vCard archive in trash so a restored contact is byte-identical to the original. • Approved list: contacts you decide to keep are remembered, so the same records are never shown again in a future session. • Native iOS 26 design: Liquid Glass tab bar, full Dynamic Type support, light and dark modes. PRIVACY-FIRST • Cleanbook never leaves your device. No accounts, no analytics, no third-party SDKs, no network calls. • The only permission asked is access to your contacts. It is required for the app to read, compare, and update them — nothing else. CLEANBOOK PRO Cleanbook is free to download. A one-time Cleanbook Pro purchase unlocks unlimited swipes per session, duplicate merging, the Ghosts category, and an unlimited Approved list. No subscription. Restores across devices via Apple ID. WHY USE IT The native Contacts app shows you the list. Cleanbook gets you to the empty-inbox version of it: a clean, current address book you can actually trust.
Screenshots
Verdict
DeepSign and Cleanbook Contact are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. DeepSign sells 4 one-off in-app purchases and Cleanbook Contact sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | DeepSign | Cleanbook Contact |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18 |
| Further details — not scored | ||
| Size | 30 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | DeepCloud AG | Vladislav Kolupaev |
In-app purchases
DeepSign
- 3 QES Signatures$6.99
- 12 SES Signatures$6.99
- 40 SES Signatures$22.99
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- 10 QES Signatures$22.99
Cleanbook Contact
- Cleanbook Pro$4.99
Questions
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