Nulleuri / Android apps
Small, focused apps for energy, work, light, weather, sound and everyday decisions.
Built in Estonia. Made for everywhere.
Nulleuri / Products
Discover Android apps by Nulleuri, an independent studio in Estonia. Explore practical tools, puzzle games and wellbeing apps, with clear prices, release notes and privacy information.
29 of 29 apps
Available
Puzzle game
An offline arrow puzzle with 200 Journey levels, a free Daily Challenge and a relaxed untimed mode. Start with 24 free levels; Premium opens the remaining 176.
Android · 1.1.0Free with optional one-time Premium
Available
Energy & utilities
Estonian market prices, contract-aware costs, optional Estfeed consumption and EV charging plans in one clear app.
Android and web · 2.2.0Free with one-time Premium
Available
Health & fitness
Short daily plank and core workouts with a clear timer, gradual progression and private local history.
Native Android and web · 2.0.0Free
Available
Calculator
Editable calculation sheets, instant percentage math, searchable local history and a clear loan calculator without spreadsheet weight.
Android · 1.1.0Free with one-time Pro
Available
Utility
A calm flashlight with one-handed brightness control, screen light, a Home screen widget and protected signalling.
Android · 1.1.0Free with one-time ad removal
Available
Audio
A focused MP3 cutter for fast, frame-aligned edits with local files and clear export.
Android · 1.0.1Free
Available
Puzzle & learning
Calm Sudoku with fair difficulty and hints that explain the next logical step.
Android · 1.0.1Paid once; Google Play shows the current local price
Available
Voice recording
Record voice notes, keep audio on your device and manage playback, sharing and deletion in a simple local library.
Android · 1.0.0Free with one-time ad removal
Available
Cycle & wellbeing
A local-first period and wellbeing tracker without an account or subscription, supported by one consent-aware banner in the free version.
Android · 1.0.0Free with optional one-time Pro; Google Play shows the local price
Available
Puzzle game
A calm number-matching puzzle with verified solvable boards, four game modes, autosave and local statistics.
Android · 1.0.0Free with optional one-time Calm Pack
Available
Health & fitness
A reliable offline meditation timer with recorded bells, fixed or random intervals, saved presets, sleep sounds and private local statistics.
Android · 1.1.0Free with optional one-time Pro
Available
Tarot & reflection
A bilingual 78-card tarot companion with a face-down digital deck, daily card, guided spreads and a private journal that stays on the device.
Android · 1.0.1Free with optional one-time ARKAAN Plus
Available
Available
Health & wellbeing
A nicotine-use and urge tracker for adults who want to stop, reduce or understand their habits. Set your own plan, take a short pause and keep personal records on your device.
Android · 1.0.0All features are free; optional one-time ad removal
Available
Cozy crime logic game
Solve crime logic cases with precise clues, a deduction grid and explanations that help you understand each step. Explore 120 cases and a fresh daily challenge.
Android · 1.0.012 ad-free starter cases and ongoing metered free access, with optional one-time Premium
Available
Travel utility
A fast, high-contrast airport pickup sign for Android phones, tablets and foldables, with an offline core and optional professional driver tools.
Android · 1.0.1Free core with optional one-time Pro
Available
Travel utility
A paid-once airport pickup tool with clear passenger signs, reusable company branding, a pickup queue and group check-in. Every feature is included, with no ads or subscription.
Android phones, tablets and foldables · 1.0.0€2.99 once on Google Play; all features included. Regional prices may vary.
Available
Pool service profitability
An Android profit and cost calculator for independent pool service operators. See estimated results by site, include your own labor and explore monthly pricing with records kept on your device.
Android · 1.0.0Free for 1 active site; one-time Pro configured at Estonia EUR 33.99 / US USD 33.99 / Australia AUD 51.99. Google Play shows the current local price before purchase.
Available
Income counter
An offline Android income counter with a calm black-and-gold design. See estimates for today, this month and this year, follow your own work schedule and keep currencies separate. One upfront purchase includes the complete app.
Android 8.0 and later · 1.0.0 (4)One paid download: €1; US $1 in the United States. Google Play shows the local price before purchase.
Available
Home & cabin departure checks
Keep the instructions for your home or cabin in one place. Follow a fresh departure checklist, record what you checked with notes and photos, and share a clear PDF summary with your family.
Android · 1.0.0One-time paid app; all homes and features included
Available
Handspinning journal
A handspinning journal that connects your fiber, bobbins, spinning sessions and finished skeins. Pick up a project with its notes, settings and materials at hand. Record partial plying, compare measurements after finishing, and keep the details you want to use next time.
Android 8.0+ · phones and tablets · 1.0.0Free journal; optional one-time Pro. Google Play shows the local price before purchase.
Available
Rental property management
Keep rental properties, contacts, leases, cash flow and maintenance together on your phone. Built for owners who manage their own smaller rental portfolio, with offline operation and complete backups you control.
Android 8.0+ · phones · 1.0.0Paid once; all features included. Google Play shows the local price before purchase.
Available
Wear OS watch face
Large, distinctive digits, a black background and a fine minute arc. Pilvoro Dial lets you choose how much information surrounds the time: a clear view, two useful data fields or an extra row for longer text.
Wear OS 5+ · Watch Face Format 2 · 1.0.0Paid once · all layouts and palettes included
Available
Wear OS multi timer
Tea, pasta and the oven each need their own time. RimTempo keeps up to four independent timers on your wrist, with quick ways to add time, pause and start again. Large numbers and clear states keep the scrollable timer list easy to read.
Wear OS 3+ · standalone watch app · 1.0.0One-time paid download · no subscription
Available
Medication reminders
Set your medication reminders, record each response and see your history in a monthly calendar. Clear controls, an extra-large view and 21 interface languages help keep a personal routine easy to follow.
Android 8.0+ · 1.0.0One active medicine free without a time limit; optional one-time unlock EUR 2.99 in euro-priced regions. Google Play shows the local price before purchase.
Release candidate
Photography & travel
Sunrise, sunset, golden hour, blue hour and weather context for places worth planning.
Android · 1.0Free
Research project
Product research
An earlier planning concept for photographers and travellers exploring sun paths, weather scores and saved shoots.
Android research build · 0.1.0Not for public release
In development
Weather
A map-first view of current conditions, official warnings, radar and lightning for Estonia.
Android · 1.0.0Not announced
In development
Weather assistant
A native Estonian weather assistant focused on rain timing, warnings, radar, aurora and pollen.
Android · 0.1.0Not announced
In development
Rigid-heddle weaving
Plan a plain-weave project, follow a numbered threading guide and return to your saved next pick. Heddlewise is an English-language Android companion for weaving with a single rigid heddle.
Android 8.0+ · 1.0.0Planned: 1 project free; full library US USD 14.99 once
No apps match your search.
Nulleuri / Updates
Version 1.1.0 was submitted to Google on 8 October 2026. Automated checks and review are pending. Public version 1.0.0 remains available; the update has not been confirmed as approved or available.
Available on Google Play. Public purchase availability was verified in Estonia and the United States on 16 September 2026. Google Play shows the price and compatibility for your country and device.
Available on Google Play in Australia, Canada, Finland, New Zealand, Norway, Sweden, the United Kingdom and the United States. Adding Estonia is under review as of 16 September 2026; purchase in Estonia is not yet confirmed. AwayNote supports English, Finnish, Swedish and Norwegian Bokmål; this Estonian website page does not mean the app has an Estonian interface.
Built on clear principles
Nulleuri is an independent software studio. We prefer one well-defined problem, honest product boundaries and privacy people can understand.
A product earns its place by solving a recognisable job.
Available, in review, release candidate and development are never presented as the same thing.
Every app explains local data, permissions, third parties and deletion.
Questions, ideas and feedback go straight to the studio that makes the apps.
Before you download
Nulleuri is an independent software studio in Estonia. The apps are published by Blacksunset OÜ. Product and privacy pages include a direct support contact.
Apps marked Available have a link to their Google Play listing. Availability can depend on your country and device. Apps marked In review, Release candidate or In development may not be downloadable yet.
No. The catalogue includes free apps, apps with an optional one-time purchase and paid downloads. Each product page explains its model. Google Play shows the final local price before a purchase.
Data practices differ by app. Many keep their core data on your device; some also use advertising, purchases or online services. Read the app’s own privacy policy for its permissions, services and deletion options.
Independent by design
Nulleuri is the public software identity of an independent Estonian studio. Products are published by Blacksunset OÜ. The catalogue grows one useful application at a time.
Contact the studio
