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Turtl

Free plan Open source AndroidAPIExtensionLinuxMacSelf-hosted+1

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Turtl's own site

What Turtl is

Turtl is a collaborative notebook for organizing bookmarks, passwords, files, shopping lists, and other notes. It supports text, bookmark, password, image, and document notes, with full-text search, tag filtering, Markdown, and TeX math rendering. Users can arrange material in Spaces, select collaborators, and set permissions from read-only access through full ownership. Turtl says it encrypts information in the app before it leaves the device, using keys derived from the user’s email and password. Shared objects receive separate keys so recipients can open only the item shared with them. Turtl cautions that an intercepted email invitation can expose a Space if its shared secret is not sent separately. Users can import or export a full profile for backup or server migration, and the open-source server can be installed for self-hosting. Turtl supports Windows, macOS, Linux, Android, Chrome and Firefox bookmarking extensions, and offline access. Basic has three collaborators per Space and 50MB storage. Premium costs $3 a month and includes 10GB note data and 10 collaborators per Space; Business costs $8 a month and includes 50GB and dedicated support. Basic and Premium include community support.

Who it suits

Turtl suits people who want a shared notebook for notes, bookmarks, files, or passwords, with adjustable permissions for collaborators. Self-hosting and profile export may also suit users who want to manage where their data is kept or move it between servers.

What it does well

  • Supports five note types
  • Spaces offer permissions from read-only to full ownership
  • Works offline
  • Full-profile import and export
  • Open-source server can be self-hosted

What to know first

  • Basic storage is 50MB
  • Basic allows three collaborators per Space
  • Email invitations can expose a Space if intercepted
  • Turtl says it likely is not HIPAA compliant

Limits

Basic permits three collaborators per Space and 50MB storage. Premium costs $3 per month and includes 10GB note data and 10 collaborators per Space; Business costs $8 per month and includes 50GB note data and 50 collaborators per Space.

Plans

PlanBilled and limitsPrice
Premiummonthly · 10GB note storage · up to 10 collaborators per Space · community support · 30-day trial$3 a month
Businessmonthly · 50GB note storage · up to 50 collaborators per Space · dedicated support · 30-day trial$8 a month
Basic50MB note storage · up to 3 collaborators per Space · community supportFree
Custom plansGet in touch for a custom plan · Custom plan details not statedOn request

As turtlapp.com lists them, read 14 Oct 2026. The maker's own page has the final word.

Getting started

  1. Visit the Turtl website and choose Basic, Premium, or Business.
  2. Install Turtl for Windows, macOS, Linux, or Android, or use its Chrome or Firefox bookmarking extension.
  3. Create notes or organize material in Spaces.
  4. Invite collaborators to a Space and assign their permissions.
  5. For self-hosting, install Turtl's open-source server.

Turtl is a collaborative notebook for keeping notes, passwords, bookmarks, files, and other personal reference material together. It is best suited to people who want private, searchable notes with selective sharing and the option to host their own data. Its mix of note types and encryption is compelling, but Basic storage is limited and shared Spaces require care with invitations.

Overview

Turtl combines a personal notebook with shared Spaces, letting users organize material and grant collaborators permissions from read-only to full ownership. Notes can hold text, bookmarks, passwords, images, and files or documents, making it useful for more than conventional prose notes. Offline access broadens its usefulness when a connection is unavailable.

The app encrypts data on the device before it is sent, using keys derived from the user's email and password. Turtl is open source, and users can install its server to host their own data. Those are meaningful options for privacy-conscious users, though they do not remove the need to handle sharing securely.

Key features

Organization and writing

Full-text search and tag filtering help users retrieve material as a notebook grows. Markdown notes and TeX math rendering make Turtl suitable for formatted writing and mathematical notation as well as saved reference items. Its Chrome and Firefox bookmarking extensions and Android sharing support capture from those channels; it is a narrower fit for workflows that depend on other integrations.

Spaces and sharing

Users can choose collaborators for a Space and set their access level. Turtl generates a separate random key for each shared object, so a recipient can unlock the item shared with them rather than all of a user's content. However, Turtl warns that an email invitation sent without a separately communicated shared secret could expose a Space if intercepted. That caveat matters for sensitive material: invitation handling is part of the security decision, not an afterthought.

Attachments, backup and hosting

Photos, files, and documents can be attached to notes, and a full profile can be imported or exported for backup or transfer between servers. Self-hosting gives technically capable users control over where their data resides, while profile export helps avoid being locked to one server. Users who want a managed notebook without operating server software may prefer not to take on that hosting responsibility.

Privacy and compliance

Turtl says its security model encrypts data before it leaves the device. Its FAQ says it likely is not HIPAA compliant, citing the absence of access logs, fine-grained access controls, and physical access safeguards. Organizations with HIPAA obligations should choose a product that meets those requirements rather than treating Turtl's encryption as sufficient.

Pricing

Turtl uses a freemium model, with a free plan, paid plans from $3/mo, and a 30-day trial. The Basic plan has a 3-collaborator limit per Space and 50MB of storage. That can suit a small personal notebook or a modest shared collection, but the storage ceiling is a substantial constraint for users attaching many files.

Premium costs $3 a month, billed $3/mo, and includes 10GB of note data, up to 10 collaborators per Space, and community support. It fits individuals or small groups that need more room and broader collaboration. Business costs $8 a month, billed $8/mo, and raises the allowance to 50GB of note data and 50 collaborators per Space, with dedicated support; it is the more suitable tier for larger teams that need that support channel. Custom plans use custom pricing, with terms arranged by contacting Turtl.

Basic and Premium include community support, while Business includes dedicated support. The free plan's 50MB and three-person Space cap are the clearest trade-offs against paid tiers; choose based on storage and collaborator needs rather than assuming the free allowance will cover an attachment-heavy archive.

Platforms

Turtl supports Windows, macOS, Linux, Android, and Chrome extension use. Offline access is supported. Chrome and Firefox bookmarking extensions are described, alongside Android sharing.

Who it's for

Turtl is a strong fit for individuals and small groups who want one place for varied private notes, searchable organization, and controlled sharing. It also suits users who value open-source software, offline access, or the ability to self-host. It is not the right choice for teams that need HIPAA compliance, rely on integrations beyond its described capture options, or cannot safely manage shared-space invitations.

Pros and cons

Pros

  • Varied note types: Text, bookmarks, passwords, images, and documents can live in one notebook.
  • Granular sharing: Space permissions range from read-only to full ownership, with separate keys for shared objects.
  • Data portability and hosting: Profile import/export and an installable open-source server give users options for backup and self-hosting.
  • Offline use: Notes remain useful without a network connection.

Cons

  • Invitation risk: An intercepted email invitation without a separately communicated secret can expose a shared Space.
  • Limited entry tier: Basic allows only 50MB and three collaborators per Space.
  • Not suited to HIPAA workflows: Turtl identifies missing safeguards that make compliance unlikely.
  • Narrower integration reach: The described integrations focus on Chrome and Firefox bookmarking and Android sharing.

Alternatives

For personal secure note-taking, compare Turtl with Secure Notes Apps; for a broader selection centered on note-taking, see Note-taking apps. Turtl is also categorized alongside Account-Based Marketing Software.

Abmatic AI is an alternative for account-based marketing, with a free tier that includes website visitor company reveals, one personalization campaign, basic intent signals, and community support. AdRoll offers a no-fee-to-start account-based retargeting plan where users pay for media. Hushly has a free plan with PageSherpa access and 50 starting credits. Ploy offers a free plan with daily credits, custom domains, Google Workspace integrations, and GitHub sync. Factors.ai is a paid option with a free plan and a Basic tier for up to 10,000 monthly tracked users, up to 3,000 identified companies per month, and five seats. Propensity is aimed at teams seeking account and contact-level website de-anonymization, intent data, unlimited campaigns and users, and Salesforce and HubSpot CRM integrations; its Essential plan is $2,000/mo. Metadata offers a custom-scoped proposal, while Folloze is another paid web-based alternative.

Verdict

Choose Turtl if you want a flexible notebook that combines on-device encryption, selective collaboration, offline access, and the option to self-host. Its appeal is strongest for privacy-minded individuals and small teams who can work within the Basic storage cap or justify a paid tier. Look elsewhere for HIPAA-regulated work, broader integrations, or sharing practices that cannot accommodate its invitation-security warning.

Verdict

Turtl combines collaborative Spaces, note organization, and on-device encryption, with self-hosting and profile export as additional options. Consider its invitation-security warning and stated HIPAA limitations when deciding whether it fits sensitive workflows.

Questions

Is Turtl free?

Yes. Basic is listed as a free plan, with three collaborators per Space and 50MB storage.

What do Premium and Business cost?

Premium is $3 per month and Business is $8 per month.

Which platforms does Turtl support?

It supports Windows, macOS, Linux, and Android, along with Chrome and Firefox bookmarking extensions.

Is Turtl open source?

Yes. Turtl says its open-source server can be installed by users who want to host their own data.

Can I use Turtl offline?

Yes. Offline access is supported.

Who operates Turtl?

The official site identifies Lyon Bros LLC as the project owner and operator.

Facts from Turtl's own pages

Android sharing
The Android client can receive shared pages and files for bookmarking or uploading into Turtl. · turtlapp.com, 14 Oct 2026
API status
The original public API repository is explicitly marked deprecated, although it documents the server handling client requests. · github.com, 14 Oct 2026
Attachments
Photos, files and documents can be attached to notes and are stored with the same protection as other data. · turtlapp.com, 14 Oct 2026
Attachments and backup
Users can attach photos, files, and documents, and import or export their full profile for backup or moving between servers. · turtlapp.com, 29 Sept 2026
Audit finding
The published audit identified missing libsodium initialization checking and a configuration that could accept invalid TLS certificates. · turtlapp.com, 14 Oct 2026
Browser extensions
Chrome and Firefox extensions bookmark the current webpage through the desktop application. · turtlapp.com, 14 Oct 2026
Company
The official site identifies Lyon Bros LLC as the project owner and operator. · turtlapp.com, 29 Sept 2026
Compliance
Turtl's FAQ says it likely is not HIPAA compliant because it lacks access logs, fine-grained access controls, and physical access safeguards. · turtlapp.com, 29 Sept 2026
Cryptographic algorithms
The documentation says key derivation uses scryptsalsa208sha256, symmetric encryption uses ChaCha20-Poly1305, and asymmetric encryption uses libsodium sealed boxes. · turtlapp.com, 14 Oct 2026
Documentation depth
Official documentation covers encryption, app architecture, syncing, sharing, server operation and security caveats. · turtlapp.com, 14 Oct 2026
Download platforms
The official download page lists Windows x64, macOS x64, Linux x64, Linux x32 and Android packages; iOS is marked coming soon. · turtlapp.com, 14 Oct 2026
Download verification
Turtl publishes GPG verification instructions and SHA-256 signatures for desktop and Android downloads. · turtlapp.com, 14 Oct 2026
Embeddable core
Turtl provides a Rust core library described as embeddable and responsible for cryptography, peer-to-peer syncing and data models. · github.com, 14 Oct 2026
Encryption
Turtl encrypts data on the client before transmission, so stored server data remains unreadable without users' keys. · turtlapp.com, 14 Oct 2026
Free plan
Yes · turtlapp.com, 20 Sept 2026
Headquarters
The Google Play listing identifies the developer as LYON BROS LLC at 5332 Knox Ave S, Minneapolis, Minnesota 55419, United States. · play.google.com, 14 Oct 2026
Import and export
The application can export and import an entire profile for backup or migration between servers. · turtlapp.com, 14 Oct 2026
Independent extension limitation
ReviewsApp says the browser extensions are bookmarking helpers rather than standalone applications and require the desktop client. · reviewsapp.org, 14 Oct 2026
Independent interface review
ReviewsApp describes a clear card-based interface with drag-and-drop boards, keyboard shortcuts, tag-based organization and no hierarchical folders. · reviewsapp.org, 14 Oct 2026
Integrations
The official feature and download pages describe Chrome and Firefox bookmarking extensions and Android sharing, but do not list other integrations. · turtlapp.com, 29 Sept 2026
License
The desktop, core and browser-extension repositories identify the GNU GPL version 3 license, while the server repository uses AGPL-3.0. · github.com, 14 Oct 2026
Limit: Google Play reliability
Google Play reviewers reported account or note loss, login failures, crashes when calls interrupt editing, lack of offline access and incomplete Markdown rendering. · play.google.com, 14 Oct 2026
Limit: maintenance
AlternativeTo comments criticize infrequent updates, an apparently discontinued project, mobile bugs, login problems and limited support. · alternativeto.net, 14 Oct 2026
Limit: sharing controls
An AlternativeTo review reports that previously shared content could not be unshared. · alternativeto.net, 14 Oct 2026

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