Thoughtfully made apps, across Apple’s devices.

Kalmaro builds privacy-first apps for the Apple App Store. No tracking, no nonsense — just apps that respect you.

See the appsHow Kalmaro handles data

  • No tracking, by construction

    No analytics, no advertising, no third-party SDKs — Kalmaro apps are built on Apple's own frameworks. There is no identifier to follow you between apps, because the app never asks for one.

  • Your data stays yours

    What you record lives on your device and syncs through your own private iCloud. Kalmaro runs no servers that collect it, and has no way to read it.

  • Honest about what's known

    Where an app reports on the real world it shows the date behind the figure, names the source, and says plainly when something hasn't been measured yet. Nothing is averaged, estimated or predicted.

The Tare Today screen: current weight with its 30-day change, and the day’s briefing beneath it.

Tare

Know what your body measurements actually mean.

  • Report tiles for BMI, FFMI, RFM, BRI, waist-to-height and symmetry — not just a weight log.
  • Trend charts with forecasting, and goals tied to the dates that matter.
  • Tracks far more measurements than Apple Health has types for.
  • New in 2.0: competitions with friends, and an Apple Watch app for logging away from your phone.
  • No analytics, no third-party code: everything stays on your device and in your own iCloud.
Download on the App StoreMore about Tare →
The Kalmaro Calc tip calculator, splitting an £85 bill four ways with a 15% tip.

Kalmaro Calc

The everyday calculators you actually need, in one app.

  • 27 calculators across 8 categories — tips, VAT, discounts, loans, mortgages, areas, journeys and more.
  • iPhone, iPad and Mac, with no sign-in and no accounts.
  • 13 are free; the rest unlock with a single one-time purchase.
  • Mileage claims use the current UK HMRC approved rates.
Download on the App StoreMore about Kalmaro Calc →
Skerry showing a flood alert and an active storm overflow near Bridlington, each written as a plain sentence.

Skerry

What the water's doing today — in a sentence, not a spreadsheet.

  • Flood alerts, storm overflows and bathing-water risk, each written as a sentence you can act on.
  • Every figure carries the time it was measured, and says which gauge it came from.
  • Your spots on a map, colour-coded by what is happening at each one.
  • Environment Agency, Apple Weather and Water UK data — attributed, never averaged or predicted.
Download on the App StoreMore about Skerry →
Swinging through Wivvle — the rope catches the next anchor on its own.

Wivvle

A one-tap endless swinging game.

  • One tap, and it is the only one. The rope grabs the next anchor by itself; you tap to let go, and momentum does the rest. There is no second control.
  • No ads, no analytics, no tracking. No ad SDK, no interstitials, no ATT prompt — not as a launch limitation, as the design.
  • Seven cat coats earned with fish coins you find while playing, and four hand-drawn premium cats you can buy. Coins are never purchasable with money, and no cat affects how the game plays.
  • Time the release perfectly and the cat says so: a clean release scores a Purrfect and builds a coin combo, while the distance you compare with people stays pure distance.
Download on the App StoreMore about Wivvle →

All apps

Every Kalmaro app, grouped by what it's for — 5 on the App Store and 6 in development.

Body & wellbeing

Tare app icon

Tare

Know what your body measurements actually mean.

Apneo app icon

ApneoComing soon

Guided breathing techniques, and breath-hold training.

Food

Vittly app icon

Vittly

UK food hygiene ratings, shown honestly.

Gustavera app icon

GustaveraComing soon

Recipes, meal planning and cooking mode in one place.

Money

Kalmaro Calc app icon

Kalmaro Calc

The everyday calculators you actually need, in one app.

PondaroComing soon

A UK-focused personal investment tracker.

Outdoors

Skerry app icon

Skerry

What the water's doing today — in a sentence, not a spreadsheet.

Games

Last Known app icon

Last KnownComing soon

A fog-of-war hex strategy game.

Wivvle app icon

Wivvle

A one-tap endless swinging game.

Other

Bad Memory app icon

Bad MemoryComing soon

Quotations worth keeping.

Shire Reeve app icon

Shire ReeveComing soon

Something new from Kalmaro — coming soon.

Privacy first

Every Kalmaro app is built to respect you. This site itself uses no cookies and no invasive tracking. Read each app's privacy notice on the privacy page.