NoteSR

NoteSR is an Android note-taking app that stores notes in encrypted space on the device and works offline without cloud storage or an account. The project says it encrypts content using AES-256. Users can write text notes, attach files, and open them in a built-in viewer; listed basic file types include images, videos, and text files. Encrypted backups can be exported and imported, but they can only be opened with the user’s key. The project says no data leaves the device without the user’s intent, and its privacy policy says the app does not collect, store, or share user or device data with third parties. A cross-platform command-line tool is also available for working with encrypted backups. The project directs users to download an APK from the GitHub releases page or build the app from source. NoteSR is open source under the MIT license, and its stated uses include journaling, personal records, and secure attachments. The Releases page marks version 5.6.0 as the latest listed release, with fixes to data re-encryption and additional checks for risky data operations. The app is free.

NoteSR keeps notes and attachments on-device and offers encrypted backups for users who want offline storage. Users should be comfortable obtaining an APK or building the app from source.

NoteSR suits Android users who want offline notes and encrypted attachments for journaling or personal records. It does not require an account or cloud storage.

NoteSR is an offline Android notebook that protects notes and attachments in encrypted local storage. It is best for journaling, personal records, and private files when you do not want an account or cloud service. The trade-off is a narrow, self-managed setup rather than broad device coverage or automatic synchronization.

Overview

NoteSR keeps its working data on the Android device and encrypts that storage with AES-256. You can create text notes, add files, and open supported attachments in the app's viewer. The project says no data leaves the device unless you choose to send it, and its privacy policy says it does not collect, retain, or share user data or device information with third parties. That is a strong fit for offline privacy, but it puts responsibility for transferring and preserving your data on you.

Encrypted backups provide the main escape from a single-device setup. You can export and import backup files, and they can be opened only with your key. A cross-platform command-line utility is provided for working with those backups, which will appeal to technically confident users who want scripted or desktop-based handling. Anyone expecting seamless cloud synchronization, account recovery, or automatic multi-device access should look elsewhere.

Key features

• Encrypted local storage: AES-256 protection and offline operation make NoteSR suitable for sensitive journals and records that should remain under your control.
• Notes with attachments: Text entries can include files, extending the app beyond plain writing for receipts, scans, reference material, or other personal records.
• Built-in file viewer: Images, videos, and text files are listed as basic supported types, so common personal attachments can be opened without leaving the app. The supported set is comparatively focused rather than a promise of universal file compatibility.
• Key-protected backups: Export and import let you move or archive encrypted data, while key-only access means losing the key can make those backups unusable.
• Open-source code: The project is released under the MIT license, allowing inspection and reuse by readers who value an auditable codebase.

Pricing

NoteSR has one free plan, NoteSR, priced at free. It includes the Android app with no cloud service and no account requirement. There are no paid tiers, renewal charges, seat limits, or trial period to weigh. In return, the plan does not provide a hosted synchronization layer: backups and device-to-device movement are your responsibility.

Platforms

NoteSR supports Android. The maker directs users to obtain an APK from the project's GitHub releases or build the application from source. That distribution suits people comfortable installing an APK or compiling software, but it is less convenient than an app-store workflow and offers no native iOS, desktop, or web client.

Who it's for

Choose NoteSR for a private journal, personal archive, or collection of sensitive attachments that should work without connectivity or registration. It is particularly appropriate when local control matters more than convenience and when you can manage encrypted backup files yourself. It is a poor match for teams, families, or anyone who needs shared notebooks, broad platform coverage, or automatic recovery after replacing a phone.

Pros and cons

Pros

• Private by design: Local encrypted storage, no account, and no third-party data sharing reduce exposure to online services.
• Useful beyond text: Attachments and an integrated viewer support image, video, and text-based records.
• Portable encrypted archives: Import/export and the companion CLI give knowledgeable users control over backup workflows.
• No cost or recurring commitment: The sole plan is free and open source.

Cons

• Android only: Notes are not presented through native iOS, desktop, or browser clients.
• Manual backup responsibility: There is no cloud account or automatic sync, and key-dependent backups demand careful key management.
• APK or source installation: Distribution requires more technical comfort than a standard store download.
• Focused file support: The documented basic types are images, videos, and text files, which may not cover specialized attachment workflows.

Alternatives

Browse Secure Notes Apps for a wider security-focused shortlist, or see Note-taking apps for general-purpose choices.

• Dash is the better pick if you need Android, iOS, macOS, and web access, while retaining offline, no-account use and MIT-licensed open source software.
• Notesnook suits readers who want a broader platform range and a free tier with defined storage allowances instead of Android-only local storage.
• Cryptee is worth choosing when independently reviewable open-source cryptography and access across desktop and mobile platforms are priorities.
• NULVEX is another Android open-source option for readers comparing privacy-oriented note tools.
• SecNotes fits users who prefer an Android and web app with optional premium features such as cloud backup, accepting advertising and in-app purchases on the free tier.
• SilentNotes is a free, open-source alternative for Android and Windows users who want both platforms.
• Turtl is the stronger choice for collaborative spaces, shared access, and larger hosted storage options.
• Cipher Notes offers another permanently free, MIT-licensed Android option with publicly auditable source code.

Verdict

NoteSR is a focused recommendation for Android users who want encrypted, offline notes and attachments without an account or cloud provider. Its free MIT-licensed distribution and key-protected backups reinforce that local-control model. Look elsewhere if you need automatic synchronization, multiple operating systems, collaboration, or a conventional app-store installation.