7DS Tools is an Android app bundling fifty-eight everyday utilities — calculators, converters, document tools and image tools — into a single install. Its value is architectural as much as functional: tools are registry entries rather than screens, so eighteen screens serve the whole catalogue and a new tool costs one file rather than a release cycle.

58 tools across 12 categories in one app
Most work offline; no account needed to start
Server-driven catalogue — tools update without an app release

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Built for a client and shipped on Google Play with 58 tools across 12 categories.

What it does

Capabilities delivered and running for a client.

Registry architecture

Every tool is a data record plus a runner, rendered by one universal shell.

Four execution tiers

On-device, platform plugin, web or server — declared per tool and changeable without a release.

Offline first

Pure calculations run on the device, so most of the catalogue works with no connection.

Document suite

PDF merge, split, compress and convert, handled server-side where it needs to be.

Favourites and history

Local-first with server sync, so a reinstall does not lose your setup.

Guest by default

Usable immediately; signing in upgrades the existing account rather than starting over.

Analytics and crash reporting

Instrumented so problems surface before users report them.

Play Store distribution

Shipped through the full Play review and testing pipeline.

Who it's for

Where this tends to pay for itself.

Anyone wanting one app instead of twelve single-purpose onesStudents and small businesses doing quick calculationsUsers who care that tools work without a connection

7DS Tools