Focused
A clearly defined problem, an understandable workflow, and features that genuinely help with everyday work.
Independent software · Austria
Apps that make work easier.
Darkstone builds focused tools for real, recurring workflows — from cash closing to presenting. Clear in scope, calm in use, and sparing with data.
Independently developed in Lower Austria · iOS & Android
Cash closing
Kassento
Count, compare, and document locally
Speaker timer
Presentempo
Stay present and stay on time
Two focused apps.
One calm approach.
How we think about products
Less clutter. More reliability.
Software should make a workflow easier to understand, not create a new layer of administration.
Private by design
No unnecessary account, no advertising, and no developer analytics. Your data stays as close to you as possible.
Fairly priced
A useful free core and transparent, optional one-time purchases instead of artificial subscription pressure.
Darkstone apps
Two tools. Two clear workflows.
Each app focuses on a specific task, remains useful without a mandatory account, and explains transparently what happens to data.
iOS & Android
Kassento
Count the till. Closing done.
Kassento guides you from the first coin to a documented closing: count cash, compare expected and actual balances, plan the withdrawal and float, and keep everything traceable locally.
- Multiple tills and cash currencies
- Float, tip splitting, and a local staff list
- History, insights, and exports
- Optional one-time Pro purchase, not a subscription
iOS · Android · Watches
Presentempo
Stay present. Stay on time.
Presentempo turns a quick countdown or a structured talk into a calm run with discreet section and ending cues on your phone and watch.
- Quick start and structured timed talks
- Rehearsal, preflight, and planned-versus-actual results
- Apple Watch and Wear OS with offline continuation
- Optional one-time Pro purchase, not a subscription
Direct contact
A product team that remains within reach.
Questions about Kassento, Presentempo, privacy, or a specific workflow? Your message goes directly to the developer.