DEVONthink To Go 4 vs SendSafe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DEVONthink To Go 4
Manage your entire knowledge library on your iPad and iPhone. Organize, edit, and annotate documents, notes, and more. Leverage generative AI for summaries, content creation, and advanced search. Syncs privately and securely across devices.
- Document organization and management
- AI-powered summaries and content creation
- PDF annotation and editing
- On-device OCR for searchable documents
- Cross-device secure synchronization
- Custom metadata and tagging
- Shortcuts automation
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Your entire knowledge library. Always with you. Always private. DEVONthink To Go is your document repository when you're not at your Mac. Collect, organize, edit, and annotate. Use generative AI to work with your stored knowledge or create new documents. Automate with Shortcuts. Our time-tested technology keeps all your data in sync between your Mac, iPad, and iPhone, privately and securely. The professional document and information manager for iPad and iPhone. From DEVONtechnologies, driving innovation since 2002. - Students: Annotate research papers with AI-powered summaries - Teachers: Organize your materials, use AI to create handouts and tests - Researchers: Have your data with you in a robust, powerful knowledge manager - Lawyers: Keep all case files organized and encrypted Have your important documents with you at all times: - Never lose an important document again, keep everything organized - Store PDFs, notes, images, bookmarks, just about any type - File your documents in groups, even more than one group at a time - Use tags, mark documents with flags or as unread, give them a star rating - Versioning lets you return to a previous state of a document - Revision-proof databases prevent edits to documents with special requirements - Sync your data between Macs, iPads, and iPhones, securely and privately Work with your documents: - Edit texts, Markdown files, or rich text documents - Annotate and edit PDFs with common tools - Make scans, scanned PDFs, or images searchable with the built-in, on-device OCR - Add custom, searchable metadata fields to enrich your documents Use generative AI: - Work with your favorite provider and model - Chat with your documents, analyze or summarize them - Transform text or extract text from images and even handwritten notes - Create new images from your data - Find documents using natural language with the AI-powered search assistant - Let the AI make order from chaos, rename documents, add tags, or label or rate them DEVONthink To Go is well-integrated with other apps: - Link to your documents from other apps with universal links - Access all your documents also through the Files app - Clip data from almost any app with the Clip to DEVONthink extension - Use drag-and-drop, inside DEVONthink To Go or between apps - Automate repetitive tasks with Shortcuts actions DEVONthink To Go is great standalone but also works perfectly with DEVONthink for Mac and across multiple devices. Synchronize your databases securely and privately over the local network or through a cloud service of your choice. You decide what data is synced, when, and where. Strong encryption makes sure that your data belongs to you, not to your service provider or us. Privacy policy: https://www.devontechnologies.com/r/privacy End user license agreement: https://www.devontechnologies.com/r/eula
SendSafe
Securely redact sensitive information from documents and photos using on-device AI. Protect your personal data by burning black bars into pixels, stripping metadata, and adding optional watermarks. Your files never leave your device.
- On-device AI redaction
- Manual redaction tools
- Metadata stripping
- Custom watermarking
- PDF and image support
- Multi-page PDF handling
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Send safer. Redact IDs, bank statements, and insurance cards in seconds — without uploading anything. SendSafe uses on-device AI to find the sensitive information on your document, then burns black bars into the pixels so there's no copyable text underneath. Drag your own black bars on anything the AI misses. Add a watermark for the specific recipient. Strip EXIF and GPS metadata on export. Done. 100% on-device. Your photos, PDFs, and detected fields never leave your phone. WHAT IT DOES • Pick a photo or import a PDF • AI auto-highlights SSNs, credit cards, names, addresses, IDs, dates of birth, phone numbers, and emails • Tap each highlight to redact it, or tap "Redact all" for one-shot • Drag anywhere to redact anything else • Multi-page PDF support — swipe between pages or jump straight to redacted pages • Press and hold the eye icon to peek behind the redactions and verify nothing leaked • Export to flat image-PDF (no underlying text layer) or PNG • Optional watermark, automatically dated for the recipient PRIVACY-FIRST BY DESIGN • No account, no signup, no email • No analytics, no ads, no third-party SDKs • No cloud upload — Vision and Natural Language run on-device • EXIF and GPS metadata stripped on every export • Source of truth: your phone PREMIUM ($4.99 ONE-TIME) • Remove the SendSafe watermark • Custom watermark text, color, opacity • Document templates (coming soon) • Higher-quality export options One purchase. Forever. No subscription. No usage limits in the free version. Made for renters submitting paperwork to landlords, job seekers sending W-2s to HR, patients sharing insurance cards with new doctors, and anyone who has ever screenshotted an ID and wondered if their address number was still visible behind the marker scribble.
Screenshots
Verdict
The clearest difference is review sentiment: SendSafe at 100% against DEVONthink To Go 4's 45%. SendSafe also leads on rating (5.0 vs 4.7) and iOS requirement (17.0 vs 26.0). DEVONthink To Go 4's advantage is ratings volume (258 vs 1). On price, ads, in-app purchases and monetization model 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. DEVONthink To Go 4 sells 2 in-app purchases, starting at $2.99 per month and SendSafe sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SendSafe holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DEVONthink To Go 4 has 258 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 45% of DEVONthink To Go 4's written reviews are positive against 100% of SendSafe's.
| Parameter | DEVONthink To Go 4 | SendSafe |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (258 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 44.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 258 — better | 1 |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 193 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | DEVONtechnologies, LLC | WEIXUAN HUANG |
Customer experience
DEVONthink To Go 4
SendSafe
In-app purchases
DEVONthink To Go 4
- Monthly1 Month trial$2.991 Month
- Yearly1 Month trial$19.991 Year
SendSafe
- SendSafe Premium$4.99









