← Mercury Project
MERCURY APPS / MERCURY PROJECT

Every day.
A little simpler.

Useful apps for activity, play and keeping track of what matters.

SYSTEMSTORY / MAC

Know what’s using your Mac.

See what’s using RAM and CPU right now, and how memory kept up during the work you actually do. Any upgrade decision then rests on measurements from your own Mac.

Visit systemstory.app
SystemStory's Usage Advisor on the screen, 30 days of example data: Development, Everyday work and Video work workflows, and whether the RAM kept up.SystemStory's menu-bar panel: CPU, GPU, temperature and fans, RAM with memory pressure, and the apps using RAM and CPU.
SystemStory v1.28
Usage Advisor
  • Development
  • Everyday
  • Video
See how RAM keeps up.Review your workflows before deciding to upgrade. Shown with example data.

Apps for iPhone, iPad and Mac. Native Swift.

We also build our own apps for iPhone, iPad and Mac, from design through release to maintenance. They build on Apple’s frameworks (SwiftUI, HealthKit, WidgetKit, RealityKit, SwiftData, CloudKit, IOKit), with no ads, analytics or user accounts. Usage data stays with the user - on the device, or in their own iCloud. Where an app needs a licence or updates outside the App Store, it goes online only for those.

  • No subscriptions
  • No ads
  • No tracking
  • No account needed
  • Data stays with the user
SystemStory's panel with example data: CPU 8%, GPU 17%, thermal state Normal at 48 °C with two fans, RAM 41.2 GB of 64 GB with pressure Normal, and the apps using RAM and CPU, each with its kind of work.

SystemStory

RAM, CPU and Usage Advisor · Mac

A menu-bar monitor that shows what’s using RAM and CPU right now. Its Usage Advisor reads the history recorded on your Mac and shows how memory kept up during your work.

  • What’s using RAM and CPU - processes grouped by app, simulator and background program, each with its kind of work. On supported Macs, chip temperature and fan speeds too.
  • Usage Advisor and workflows - recognises development, everyday work, video or games, and shows the whole Mac’s memory pressure during each session. Up to a year of history, with gaps clearly shown.
  • History stays on your Mac - no account or analytics. SystemStory goes online only for its licence and optional update checks, and never sends your usage history.

One-time licence · No subscription · Apple silicon Mac, macOS 26 or later · Screenshot uses example data

MoveStory Station preview: one year of history, 4,132 km in weekly bars with distinct walking and cycling segments
MoveStory Station preview: a circular HUD with today’s step count large in the centre, plus distance and cycling

MoveStory

Steps & activity · iPhone

The story of how you move. Steps and distance first, every activity counted, and your whole history at a glance.

Preview of the next update
The upcoming Station look puts today’s steps in a large central count on a circular HUD, with distance on a digital display. Coloured bar segments distinguish activities within the same day, from a week to your lifetime archive. Classic photographic looks remain available as a choice.

  • Steps and distance in kilometres and miles, today’s steps right on the app icon, plus Home Screen, Lock Screen and StandBy widgets.
  • Every activity counts - walking, running, cycling, swimming, skating, rowing and more, from Apple Health.
  • A meadow that blooms as your day fills up, and a goal that follows your own last 30 days. No streaks, no guilt.

Free · No ads · No tracking · Health data never leaves your iPhone

LuckyRoll: Onyx & Gold dice above the Heritage table while holding the roll button
LuckyRoll: player selection and game modes with the Heritage theme

LuckyRoll

Dice for friends · iPhone & Apple Watch

Real 3D dice for settling it with friends - who wins, and who pays the tab. Play solo or choose who is joining the next round.

  • Roll your way - shake your phone, hold and release the button, or hide it and roll directly on the table. Tap fast for a Dice Tornado, with Shake Vibration adding feedback as the dice rattle.
  • Up to 12 saved players - switch on just who is playing. A photo, name and traffic light show when to pass the phone and when to roll. Ties roll off automatically and the winner gets the crown.
  • Truly fair throws - the system’s secure random generator keeps results from being decided in advance. Choose dice and table styles, including Heritage and Noir monograms.

Free forever · No ads or tracking · iPhone & Apple Watch · Optional tips unlock premium dice and tables

CarStory 2.0: garage with three cars and access to the Icon Collection
CarStory 2.0: the Icon Collection showing free and CarStory Plus icons

CarStory

Car service log · iPhone & iPad

Every car has a story. Service schedules, fuel economy, parts and paperwork in one place - now with an icon collection to match the car you love.

  • Service, fuel and paperwork - countdowns by distance and time, history with costs and receipts, a Service Book PDF, and insurance and inspection reminders.
  • 30 illustrated app icons - from hot rods to rally legends and off-roaders. Three icons are free; preview your choice on a Home Screen before selecting it.
  • CarStory Plus - unlimited vehicles and all 30 icons with one purchase. Owners of Unlimited Garage from version 1.0 already have Plus. Your records stay on your devices and sync through your own iCloud.

Free for your first car and three icons · CarStory Plus is a one-time purchase, no subscription

HouseStory: property overview with a year of care and the next task, showing example records
HouseStory: history of maintenance, visits and payments with example records

HouseStory

Home maintenance and service history · iPhone & iPad

Give your home a memory. Planned care, repairs, equipment and useful details together - for your house, apartment or cottage.

  • Home care and its history - plan recurring and seasonal maintenance, then keep completed work, costs, receipts and the people who helped together.
  • Equipment, documents and warranties - appliances, tools, supplies and manuals in one place. Export the care plan, equipment and service history as a House Book PDF, included free.
  • One property and three maintenance items free - reminders and ongoing services count toward the allowance; completions and service history are unlimited. A one-time HouseStory Pro purchase unlocks unlimited properties and maintenance items, with no subscription.

No ads or tracking · Your devices and private iCloud · App screens contain fictional example records

Coming soon to the App Store HouseStory website
The Callout app icon: a cheerful rabbit calling out

Callout

Learning game for ages 6–8 · iPhone & iPad

A game children play with their voice. They say a number or a picture’s name out loud and move forward through six playful 3D worlds.

  • Numbers, dots and pictures - numbers from 1 to 100, groups of dots to count and pictures to name.
  • English, Español or both - recorded voices in American English and neutral Latin American Spanish; app menus appear in English or Spanish according to the device or app language, independent of the practice language. An optional per-answer timer can be turned Off.
  • Up to six players - each with an animal avatar, an optional nickname of up to 20 characters and their own progress. Three rounds of five successful answers, with checkpoints and later review.
  • On-device speech recognition - audio is not recorded or transmitted. Players, progress and settings stay on the device; Mercury Project receives none of it. No accounts, ads, in-app purchases or tracking.

Six 3D worlds: Jumping Rabbit, Jets, Race Cars, Dolphins, Space Ships, Dinosaur Valley · Microphone needed during speaking gameplay

Coming soon to the App Store Callout website

Need a quick assessment of a plan, a fix for a problem, or a whole system designed?

We can start with an initial consultation, a technical audit or a small pilot, and follow up with a full project and long-term collaboration.

E-mail
info@mercuryproject.cz
WhatsApp
+420 724 818 888
Registered office
Radlická 112/22
150 00 Prague 5, Czech Republic
Company ID (IČO)
25087410
VAT ID
CZ25087410
Czech data box
ocn8a9