About
Our Mission
SimpleTool App exists to make essential digital tools available without compromising privacy or security.
We favor a client-side model so common tasks like password generation, log inspection, and code cleanup can happen without sending sensitive data to a backend.
- Free to use with no account required
- Privacy-first processing in the browser
- Transparent about how the tools work
- Built for professionals, students, and teams
By the Numbers
Technical Philosophy
Our technical philosophy is rooted in a zero-trust model: if the browser can do the work locally, the server should never need to see your data.
We use modern web standards such as Cloudflare Workers, the Web Crypto API, and lightweight client-side execution to keep the product fast and transparent.
Security is treated as an architectural property, not a marketing claim.
Why Client-Side Matters
Sending sensitive data to a remote server introduces an unnecessary trust boundary.
Processing locally reduces exposure to server-side compromise, interception, and retention risk.
- Instant performance with no round-trip latency
- Better offline behavior once assets are loaded
- No server-side copy of your inputs
- Lower operational overhead and a smaller attack surface
Privacy Commitment
Privacy is not a feature added later. It is the default design constraint for every tool we ship.
We avoid tracking pixels, session recording, and persistent tool-data storage. Labeled non-personalized ads may appear on allow-listed pages; password and key tools stay ad-free.
- No accounts for normal use
- No first-party analytics on tool inputs
- No long-lived persistence for generated content
- Clear explanations of the underlying architecture
Technology Stack
Infrastructure
- Cloudflare Workers: Edge delivery with low latency and a small attack surface.
- Web Crypto API: Browser-native cryptography for secure client-side work.
- Subresource Integrity: Vendor scripts load from this origin with SRI hashes.
Frontend
- Vanilla JavaScript: Keeps bundles small and behavior predictable.
- Tailwind CSS: Provides the design system and responsive layout primitives.
- Modern Web APIs: File, Canvas, Streams, and related browser capabilities.
Who It Is For
SimpleTool App is for individual developers and small teams who want client-side utilities without sending payloads to a backend.
There is no paid product or licensing program.
- No account required
- Tool inputs stay on the device
- Labeled ads may appear on a small allow list
- Password and key tools stay ad-free
Contact & Support
We value feedback from individual developers, students, and teams using the public site.
General Support
Questions, suggestions, or bug reports.
hello@simpletool.appResponse time: 2-3 business days
Security Team
Vulnerability reports and security concerns.
security@simpletool.appResponse time: Prioritized, within 3 business days
Business Inquiries
Press, media, or other non-product questions.
business@simpletool.appResponse time: 2-3 business days