Software that does its job without asking for your data.

A private AI assistant that runs entirely on your phone.

A full assistant with no server behind it. Chat with local language models, talk to it with on-device speech recognition and synthesis, hand it an image to read, search the web, point it at your own documents and notebooks, and let it remember what matters — all of it computed on the handset. It works in airplane mode because there is nowhere for the work to go.

• Chat, voice, vision, tools, agents, jobs and connectors
• Document search, notebooks and long-term memory
• No account, no cloud, nothing leaves the device
• Free forever; $2 one-time unlock adds on-device image generation, vision and the largest models your phone can run

AndroidiOSOn-device LLMsWhisperRAG

A free ebook reader for Android and iOS with the AI running locally.

Opens EPUB, PDF, MOBI, AZW3, CBZ and CBR comics, FB2, DOCX and a dozen more formats. The reading help — explain this word, summarise this chapter, who is this character again, quiz me on what I just read — is computed on the phone, so it works on a plane and costs nothing per use. Free and ad-free, with no trackers.

• 12+ formats: EPUB, PDF, MOBI, AZW3, CBZ/CBR, FB2, DOCX and more
• On-device AI: word explanations, chapter summaries, character tracking, comprehension quizzes
• Offline translation in 40+ languages, text-to-speech, bionic reading
• Vocabulary builder with flashcards, reading statistics, cloud sync, OPDS catalogues

AndroidiOSReact NativeExpo

Cycle tracking that never leaves the handset.

A period, cycle, fertility, pregnancy and perimenopause tracker for Android built on a single premise: this is the most sensitive data on a phone, so it stays on the phone. It works fully offline, needs no account, and encrypts everything locally. There is no server to subpoena, no ads and no data sale.

• Period, cycle, fertility, pregnancy and perimenopause tracking
• Fully offline — no account, no sync, no server
• Everything encrypted on the device
• No ads, no trackers, no data selling

AndroidOffline-firstOn-device encryption

Romanian driving-theory practice that works with the network switched off.

Exam prep for the Romanian DRPCIV driving-theory test. The question bank is written here and cited to the law it comes from — OUG 195/2002 and HG 1391/2006 — rather than copied from someone else's bank, and every answer carries a why-right / why-wrong explanation. The exam simulator follows the real per-category rules, including the exact-set multi-select ones. Unofficial, and not affiliated with DRPCIV.

• Original questions, each cited to the article it tests
• Exam simulation that follows the real DRPCIV rules per category
• FSRS spaced repetition and a mistake bank, both offline
• A Romanian tutor grounded in the app’s own theory and legal text, on an EU-hosted model

AndroidiOSWebExpoReact NativeJava 25Spring Boot 4

Voltage drop, conduit fill and ampacity derating, for working electricians.

A calculator for the three sums an electrician does on site, with the answer updating as the numbers are typed rather than behind a Calculate button. It carries no code tables: base ampacity, ambient correction and allowable fill are entered from the installer's own code book, so the app is not tied to a jurisdiction and claims no authority it does not have. The Android build ships without the internet permission at all, so the jobs saved on it cannot leave the phone.

• Voltage drop, conduit fill and ampacity derating, recomputed as you type
• No code tables — every table value is yours, from the code adopted where you work
• Built without the INTERNET permission, checked against the merged manifest on every release
• One-time purchase: no subscription, no ads, no analytics, no accounts

AndroidiOSReact NativeExpoSQLite

The three US amateur radio licence question pools, offline.

A trainer for the US amateur radio licence exams — Technician, General and Amateur Extra. It carries the complete NCVEC question pools, all 1,431 questions, each with a plain-language explanation of why the right answer is right, a spaced-repetition scheduler that tracks what you keep forgetting, and mock exams assembled the way the real ones are. The Android build ships without the internet permission, so none of it depends on a signal and none of it leaves the phone.

• The complete NCVEC pools for all three licence classes, with the current errata
• An explanation on every question, not just a right-answer key
• Spaced repetition and mock exams built to the real per-element rules
• One-time purchase: no subscription, no ads, no analytics, no accounts

AndroidiOSReact NativeExpoSQLite

Offline practice for the Dutch car theory exam, in Dutch.

Dutch-language preparation for the car theory exam, with 412 questions written here from the published traffic law — the RVV 1990 and the Wegenverkeerswet 1994 — and the article behind each answer printed next to it. Hazard perception runs on the clock, eight seconds a situation, over fifty scenes drawn for the app. The build declares no Android permissions at all and the internet permission is stripped from the merged manifest, so nothing about the studying can leave the phone.

• 412 questions written from the RVV 1990 and the Wegenverkeerswet 1994, each citing its article
• Hazard perception on an eight-second clock, over fifty scenes drawn for the app
• All 66 road signs, searchable by name, by legend or by code
• No permissions, no account, no subscription — one payment for sixty days

AndroidiOSReact NativeExpoSQLite

Cookieless web analytics, so there is no banner to click.

Privacy-first analytics that sets no cookies and builds no cross-site profile, which is what lets a site run it without a consent banner. Hosted in the EU and written against the GDPR rather than retrofitted to it. It is the measurement layer under the rest of the portfolio, and it is available to other sites.

• No cookies, therefore no consent banner
• GDPR-first, EU-hosted
• Drop-in script, no cross-site profiling
• Free tier

WebEU-hosted

A wishlist you can actually send to people.

Paste a link from any shop and the item arrives with its title, picture, price and stock already filled in. Share one list instead of a dozen screenshots. Gift mode lets people reserve an item so two relatives do not buy the same present, and the list owner genuinely cannot see who reserved what. It runs in two markets from one codebase: lista-cadou.ro in Romanian, and hetverlanglijstje.nl in Dutch, where it is called Het Verlanglijstje.

• Paste any shop link — title, image, price, currency and stock read from the page
• Gift mode: visitors reserve items without the owner seeing who
• Price tracking with price-drop and back-in-stock alerts
• Passwordless magic links or Argon2id passwords
• Paid for by disclosed affiliate commissions — no ads, no subscription

WebPWAAndroid (in progress)Java 25Spring Boot 4PostgreSQL 18React 19

Rewrites stiff, robotic or AI-sounding text so it reads like a person wrote it.

Paste something that sounds like a committee wrote it and get it back in plain, human language. The rewrite is constrained: the meaning and the facts stay put, and only the delivery changes — which is the whole difference between an editor and a paraphraser. The first 500 words need no account at all.

• The core message and the facts are held fixed; only the phrasing moves
• 500 words free in the demo, with no sign-up
• Subscription or a single €2.99 rewrite — no account needed for the one-off
• Rewrite history and projects once you do have an account

WebReactPaddle

Schedules and auto-publishes social posts on the rhythm you set.

Write a month of posts in an afternoon and let them go out on their own. Cadence publishes to LinkedIn, Facebook, Instagram and Threads at the day, hour and timezone you picked, refreshes the access tokens before they expire, and retries with backoff when a platform has a bad minute. The tokens are yours and stay on the server; you post as yourself, not through a shared app account.

• LinkedIn, Facebook, Instagram and Threads, including Company Pages
• Scheduled to the minute in any timezone, and recurring daily, weekly or monthly
• Images published through each platform’s native image flow, with alt text — not as a link preview
• Automatic retry with backoff, and token refresh before expiry

WebJavaSpring BootReactPaddle

BTW returns and the annual filing, for Dutch freelancers, without the spreadsheet.

Invoices, expenses, asset depreciation and the tax returns themselves in one place. The quarterly BTW return is assembled with the rubriek codes already right — 1a, 1b, 2a, 5b and the rest — so the part of the job that is really bookkeeping trivia stops being a quarterly research project. Bilingual, English and Nederlands, because half the ZZP’ers it is for did not grow up with the vocabulary.

• Quarterly BTW return with the rubriek codes filled in, not looked up
• Invoices, expenses and asset depreciation kept together
• The annual income tax filing built from the same records
• English and Nederlands throughout

WebJavaSpring BootReact

Price history that catches the discount that was never a discount.

Romanian price comparison, price history and price alerts, with fake-discount detection as the point rather than a feature. Under the EU Omnibus Directive — transposed in Romania as HG 686/2022 — an announced reduction must reference the lowest price of the previous 30 days. PriceRadar keeps that 30-day floor for every product and says plainly when the sticker does not match it.

• Fake-discount detection grounded in the EU Omnibus Directive (HG 686/2022)
• Full price history per product, stored as a time series
• Telegram alert bot for price drops
• Automated short-form video pipeline as a distribution channel that does not depend on search

WebTelegramJava 21Spring Boot 3.3TimescaleDBNext.js 15

A price-comparison shop for Romania, paid for by the retailer rather than the shopper.

A catalogue assembled from 2Performant advertiser feeds, re-read nightly, with a price history behind every product. Sortio holds no stock and sells nothing: the shopper buys from the retailer at the retailer's price and the merchant pays the commission, which is stated plainly on every page. Server-rendered HTML throughout, because an affiliate catalogue earns nothing it does not rank for.

• Nightly ingestion from affiliate product feeds, with price history kept
• Every outbound click routed through the network tracker and disclosed as such
• Server-rendered Thymeleaf — the crawler gets the same complete HTML the shopper does
• One Java process, one container, one hand-written stylesheet

WebJava 25Spring Boot 4ThymeleafPostgreSQL 16

Tells you whether the candidate solved it, or the tab next to it did.

A verification layer over the hiring you already do. It watches an assessment or an interview for signs that the answers are not the candidate’s own — face, keystrokes, audio-video sync, coherence — and combines them into one confidence score. It is a signal, not a verdict: several independent detectors have to agree before a score rises, a flag routes the session to a human with the evidence attached, and nothing is ever auto-rejected. It also ships the assessments themselves — live coding in a sandbox, AI-graded essays, take-home uploads and video interviews — but it will sit beside an existing ATS instead if that is all you want from it.

• Flags for human review and never auto-rejects — a false flag costs a reviewer a few minutes, not somebody their career
• Several independent signals must agree, so a flaky webcam or an unusual typing style flags nobody on its own
• No lockdown browser and no rip-and-replace: it adds to the ATS and screening you already run
• Its own assessments too — live coding with sandboxed execution, AI-graded essays, file uploads and video interviews

WebNext.jsReact

Error tracking that keeps the context.

A self-hosted, Sentry-compatible error tracker. Every RoboMiri app reports into it, which means crash data from a period tracker and a reading app never reaches a third-party vendor — it lands on our own machine in the EU. Existing Sentry SDKs point at it unchanged.

• Self-hosted on our own infrastructure, in the EU
• Drop-in for existing Sentry SDKs
• Keeps the context around a crash, not just the stack trace

Self-hostedSentry-compatible

Marketing for a solo founder with one account and no budget.

Give it the URL of a product and it crawls the site, works out what the thing does and who it is for, learns your writing voice from your own past comments, then finds threads worth answering using five Reddit strategies plus a Hacker News sweep. It reads each subreddit's actual rules before suggesting anything, drafts a promotional and a non-promotional reply for every thread, and paces the whole plan across seven days inside what one account can safely do. It is read-only on Reddit — it never posts for you.

• Five lead-finding strategies plus a Hacker News sweep over stories and comments
• Subreddit names validated against the live API, rules read before drafting
• Two reply variants per thread and a personalised DM per qualified person
• A seven-day plan and one email digest — it only tells you about what is new

ChromeManifest V3DeepSeek API