Welcome to Eri Tech Studio. We design and build clean, purposeful, and modern utility applications for iOS and Android platforms.
Our Applications
- Kohii — A dedicated coffee and espresso companion designed to log brew recipes, track extraction parameters, and dial in the perfect cup.
- The Bake Log — A specialized mobile companion for sourdough bakers, designed to track hydration, fermentation times, and bake logs to perfect every loaf.
- Warranty Box — A streamlined digital vault to store, track, and manage product warranties, receipts, and expiration alerts all in one secure place.
- Cellar Book — A wine cellar companion that tracks drink windows on every bottle, with label photos, tasting notes on the 100-point scale, and an offline atlas of your collection's regions.
- Leaflet — A plant care tracker with watering and feeding schedules, care reminders, and a photo timeline that shows a year of growth in one scroll.
- The Travel Binder — A fully offline binder for flights, hotels, bookings, documents, packing and checklists, with the whole trip on one map. No account, no cloud.
Every app has its own page with full details: see all six. Or go straight to the stores:
Free Tools
We also publish free web calculators from our apps — baking hydration and baker's percentages, coffee and espresso ratios, wine drink windows, plant watering intervals, travel packing and budget planners, and a UK return rights checker. No signup, nothing gated.
Contact & Support
Have questions, feedback, or need technical support? Drop us a line at: