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Built by engineers, for real people

Genuinely useful apps, engineered with care.

We are a software engineering team, and these are the apps we build for ourselves. Each one does a single job and then gets out of your way — no streaks to keep, no countdown before you can play again. Some of them cost money and some show ads; every card says which, before you install.

Browse the apps Why we build this way
apps
23
with no ads at all
13
work with no signal
17
with a one-time unlock
17

Every app we make

Grouped by what you came for. Each card states what it costs and whether it shows ads, before you tap anything.

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Games

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Want a fast round: Blockmatic or Minesweeper. Want no clock at all: Arrows' Zen mode, or Midnight Mahjong.

  • Alchemy Combine

    Combine elements in a cauldron. Automate the discoveries.

    Mix Fire, Water, Earth and Air in a cauldron to discover more than 1,000 recipes, then unlock instruments — a second Cauldron, a Distiller, a Reactor — that keep brewing while you're away. Free to play, no account, fully offline.

    • Works offline
    • Optional ads
    • No account
    • Free

    Not on the stores yet

  • Arrows

    A logic puzzle with a beat, and a calm Zen mode.

    A minimalist logic puzzle with a beat — tap arrows on the beat to clear the grid and earn ArrowCoins, or unwind in a calm offline Zen mode. 2000 hand-tuned levels, a daily puzzle, one-time purchases, no subscriptions.

    • Works offline
    • Shows ads
    • No account
    • Free
    • One-time unlock

  • Blockmatic

    Clear rows, then climb Ascent — defuse, collect, rise.

    A free, offline block puzzle. Drag blocks onto an 8×8 grid and blast full rows and columns — then take on Ascent, a weekly ladder where bombs, gems, and frost change what clearing a line means. Light ads; a one-time unlock removes them.

    • Works offline
    • Shows ads
    • No account
    • Free
    • One-time unlock

  • Playbreak

    Nine classic games, no internet, no account.

    Durak, Sea Battle, Backgammon, Checkers, Dominoes, Reversi, Gomoku, Four in a Row and Tic-Tac-Toe. Play against a bot, pass one phone around, or connect nearby over Bluetooth — no internet, no account. Four games are free forever; the rest unlock with one purchase.

    • Works offline
    • No ads
    • No account
    • Free
    • One-time unlock

    Not on the stores yet

  • Connect Dots

    Link every pair of dots without crossing a line.

    A cozy connect-the-dots flow puzzle — link each colour's pair of dots with a non-crossing path until the whole board is filled. 500 levels, a Daily Challenge with streaks, and an endless Zen mode. Plays offline; a one-time purchase removes the ads.

    • Works offline
    • Shows ads
    • No account
    • Free
    • One-time unlock

  • Creaky Hinge

    A foldable iPhone that creaks like an old door.

    A toy for foldable iPhones: open or close the phone slowly and an old wooden door creaks along with it. On any other iPhone, drag the door with a finger. Free, no ads, no account, fully offline.

    • Works offline
    • No ads
    • No account
    • Free

    Not on the stores yet

  • Ludo Online

    Ludo against friends, the AI, or the person next to you.

    The classic Ludo dice board game — quick matches online with friends, a calm round against the AI, or pass-and-play offline. No sign-in.

    • Mostly offline
    • Shows ads
    • No account
    • Free
    • One-time unlock

  • Midnight Mahjong

    Moonlit tiles, no timer, every deal solvable.

    A calm mahjong solitaire for the end of the day — no forced timers, no lives to run out, just moonlit tiles and a board to clear at your own pace. Every deal is solvable. Offline; a one-time unlock removes the ads for good.

    • Works offline
    • Shows ads
    • No account
    • Free
    • One-time unlock

  • Merge 2048

    Swipe, merge, reach 2048 — with a daily board everyone shares.

    The 2048 number puzzle on four board sizes, with a daily challenge every player shares, a trophy shelf and a summary of how you play. Fully offline, no sign-in, and a one-time Premium that removes the ads.

    • Works offline
    • Shows ads
    • No account
    • Free
    • One-time unlock

  • Minesweeper

    The original, with a leaderboard and no cooldown timer.

    Classic Minesweeper for iOS and Android — three difficulties, a per-difficulty top-5 leaderboard, fully offline. Tap to reveal, long-press to flag. Free, with nothing to buy.

    • Works offline
    • Shows ads
    • No account
    • Free

  • Words Attraction

    Four word games. Three refresh daily, one never ends.

    Four calm word games in one app — Daily Word, Hive, and Chain Letters refresh every morning, plus Seek, an endless offline word search. No sign-in, no forced streaks; optional one-time unlocks, no subscription.

    • Mostly offline
    • Optional ads
    • No account
    • Free
    • One-time unlock

Kids

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  • Match & Spot

    Six picture games on one adventure path, for ages 4–10.

    Six picture games in one calm app for kids 4–10 — memory match, spot the difference, hidden objects, shadow match, what's missing and odd one out, laid along an adventure path through six hand-illustrated worlds. A sticker album for every pack and 21 badges to earn. Fully offline, no ads, and nothing to buy inside.

    • Works offline
    • No ads
    • No account
    • Paid

  • Sudoku Junior

    Numbers-only sudoku that grows with your child.

    A calm, ad-free sudoku for kids 4–12 — pure numbers, five board types from 4×4 to 12×12 plus Jigsaw, chaptered levels, a Sudoku School, and gentle hints. Fully offline, a one-time family unlock, no subscriptions.

    • Works offline
    • No ads
    • No account
    • Free
    • One-time unlock

  • Robot Programmer

    Build a little program, press Run, steer the robot home.

    A coding-puzzle game for ages 5–10: build a little program, press Run, and steer the robot home. Fully offline, no ads — on iOS and Android.

    • Works offline
    • No ads
    • No account
    • Free
    • One-time unlock

    Not on the stores yet

  • Spell & Collect

    Spelling for ages 6+, through storybook card albums.

    A calm, ad-free spelling & crossword game for kids 6+ — vocabulary through storybook card albums. No streaks, no surprise paywalls.

    • Mostly offline
    • No ads
    • No account
    • Free
    • One-time unlock

Tools

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On a phone, right now: Ping Network Tool and AI Wallet Pass. The rest are still being built.

  • AI Wallet Pass

    Photograph a loyalty card, get a wallet pass.

    Scan loyalty cards, tickets, and coupons into digital wallet passes in seconds — AI reads the photo. Apple Wallet on iOS, in-app wallet on Android.

    • Needs a connection
    • No ads
    • No account
    • Free
    • In-app currency

  • Cromia

    Name any colour by camera, then turn it into a palette.

    Point your camera at a colour, get its name and exact values, analyse photos, and build palettes with useful suggestions. Works offline, with no sign-in, no ads, and an optional one-time Pro unlock.

    • Works offline
    • No ads
    • No account
    • Free
    • One-time unlock

    Not on the stores yet

  • HU Exam

    Prepare for Hungary's mandatory Cultural Knowledge Exam.

    Six official topics, 500+ questions, and two ways to answer — pick the right option, or type your own and grade yourself like on exam day. Every question is in Hungarian, with a translation one tap away in seven languages.

    • Works offline
    • Shows ads
    • No account
    • Free
    • One-time unlock

    Not on the stores yet

  • Meeting Transcriber

    Record a meeting, get a transcript and a summary — on the device.

    Record a meeting and get a transcript, key points and action items without any of it leaving the phone. Speech-to-text and the summary both run on-device, so there is no cloud to opt into.

    • Works offline
    • No ads
    • No account
    • Free
    • Subscription

    Not on the stores yet

  • Ping Network Tool

    One tap answers "is it me or the internet?"

    A network diagnostics tool with three tabs — Ping, History, and Network. One tap answers "is my internet working?"; advanced mode delivers Linux-faithful ICMP ping, live RTT graphs, and traceroute. Free, with a one-time premium upgrade — no subscription.

    • Needs a connection
    • No ads
    • No account
    • Free
    • One-time unlock

  • Watch Home Remote

    Your lights, on your wrist.

    Switch your Matter lights, outlets and switches straight from a Garmin watch — phone in your pocket, screen off. Your devices stay in Apple Home too.

    • Mostly offline
    • No ads
    • No account
    • Free
    • One-time unlock

    Not on the stores yet

Health & Sleep

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  • Blood Pressure Diary

    Log a reading in three taps. Export a PDF your doctor can read.

    A simple blood pressure tracker: log readings in three taps, watch your trends, and export a clean PDF report for your doctor. Offline, no sign-in.

    • Works offline
    • No ads
    • No account
    • Free
    • One-time unlock

  • Somnia

    Mix rain, fan and white noise into one soundscape.

    Mix rain, white noise, a box fan, and more into the perfect sleep soundscape, with a fade-out sleep timer and bedtime reminders. Offline, pay once — no subscription.

    • Works offline
    • No ads
    • No account
    • Free
    • One-time unlock

What every one of our apps has in common

No sign-ins, no tracking between apps

Each app keeps its own crash and usage analytics, and there is no shared identifier to join them on. So there is no profile of you to assemble, and nothing to hand to anyone who asks for one.

Honest about the money

These have to pay for themselves, so some are paid and some show ads. What we will not do is hide it. The price and the ad behaviour are on the card before you install. Where we charge, it is almost always a single unlock rather than something that renews.

Made to be pleasant to use

No streaks to protect, no countdown before the next round, no notification asking you back. Every app here started because one of us wanted it to exist, so we are its first users. None of us wants to be nagged by something on our own phone.

Where an app does show ads, its card says so — and says what kind. The same goes for what it costs. We would rather lose the download than have you find out afterwards.

The questions people ask first

Why is nothing in these apps trying to keep me playing?
A good app does not need to. Streaks, countdowns and daily nudges exist to make something feel urgent when it is not. We would rather build something worth opening and let that do the work — which is also, in the end, what pays for it.
How do these apps make money?
Mostly a one-time unlock: you pay once and you keep it. Some of the free apps show ads, and most of those sell a way to switch them off. Where the cost to us keeps running — speech recognition, for instance — the app charges a subscription and says so on its card. What we will not do is make the free version quietly worse until you pay.
Do the apps keep getting better?
Yes. None of these are finished and abandoned; we are still improving them. A surprising number of the changes started as somebody writing in, so if something is broken, awkward or missing, write to info@swtlm.com.
Are there more apps coming?
Yes. The list is still growing, and each app starts because one of us wanted it to exist. That is the only reason any of them are here.
Do I need an account?
No, and we keep the way in as short as we can manage. There is no sign-in screen anywhere in the portfolio. A few games make an anonymous local identity so progress survives a reinstall.
Do they work without a connection?
Most of them completely, and every card says which. We keep moving more of them fully offline — an app that needs a signal to do its job stops working exactly where you wanted it.

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