Mental Metal · App Studio

Small apps.
Big personalities.

A tiny Melbourne studio making fast, private, ruthlessly focused apps people refuse to delete. No middlemen, no bloat, no dark patterns.

go on — poke one.

The Toolbox · 1

One job, done stupidly well.

Fig. 01 — Squish promo — 00:28 — tap for sound

Squish: Video Compressor

Featured iOS & Android · Photo & Video

See the size before you squish.

See exactly how small your video will get before you compress it: drag the slider, watch the size update live, then squish. Batch, no watermark, no size cap, no ads — and everything happens on your phone, nothing is uploaded.

The Trackers · 3

They remember things so you don't.

Fig. 02 — Churnie promo — 01:50 — tap for sound
Video transcript

Quick one — did you know Aussie banks will literally pay you to take out a credit card? Up to 120,000 frequent flyer points… just for filling in a form. Yes. Really. It's called churning — and it's beautifully simple. One: open a card with a fat sign-up bonus. Two: do your normal spending until you hit the minimum. Three: the points land. Four: cancel before the annual fee bites, and roll on to the next bank. Rinse. Repeat. Fly business.

One decent card is a grand in value. Keep the wheel turning, and you're looking at three to four thousand dollars a year. That's Bali. That's Tokyo. Paid for by the banks. But here's where they get you. Miss the minimum spend by a single dollar? Bonus — gone. Forget one cancel-by date? Four hundred and twenty-five bucks. Apply a month too early? You get the card, the fee, and zero points. The banks are counting on you being human.

Which is exactly why we built Churnie. It keeps the whole churn spinning, so nothing ever slips. Put a card in Churnie, and it takes over. It paces your minimum spend down to the dollars-per-day. It rings the alarm before every fee. Its radar knows every Aussie bank's bonus rules — even the sneaky shared ones. And the ledger? Cold, hard proof of what you've made. Churnie. Totally free. Nothing leaves your phone. And the banks finally pay you, for once. Bonuses in. Fees dodged. Get Churnie.

Churnie: Card Churn Tracker

New iOS & Android · Finance

The bonus game, won.

Australian banks pay big sign-up bonuses, and take them back from anyone who slips. Churnie tracks every card from bonus to cancel-by date: live minimum-spend pacing, fee reminders, an eligibility radar that knows every AU bank's rules, and a ledger that proves the hobby pays. Free, private, no bank logins. Turn the sound on, the video explains the whole game.

Fig. 03 — Hot Flash Diary promo — 00:27 — tap for sound

Menopause & Hot Flash Diary

iOS & Android · Health & Fitness

Thirty days, one clear picture.

Log perimenopause symptoms in seconds, see a clear 30-day picture, and share a clean summary with your GP. Make it yours with six gentle themes, each with a soft dark mode. Private by design: no account, no cloud, your data never leaves your phone.

Fig. 04 — Loglet promo — 00:12 — silent film

Loglet: Symptom Tracker

iOS & Android · Health & Fitness

Remembers, so she doesn't have to.

The doctor asks how you've been, and a month of bad nights evaporates into "fine". Loglet remembers so you don't have to: one-tap cramp logging that works half-asleep at 4am, guided sitting-then-standing blood pressure that flags the drop when you stand, medicine ticks that handle split doses and Mon/Wed/Fri schedules. Come appointment day, one tap turns weeks of symptoms, doses and readings into a clean PDF that answers the real question: is the dose right? Built for the developer's mum and her heart, which is why it's all big text, big buttons and no jargon. Free, no account, no ads — and your data never leaves your phone.

In the workshop — App Store & Google Play soon

How we build

We can't sell what we never collect.

Minimal data, no tracking, nothing sold. Our own apps go further still: no accounts, and nothing leaves your phone.

Shipped, not slideware.

Real apps in the store, real web apps in production. We design, build, and ship the whole thing, then keep it sharp after launch.

Small on purpose.

Tight scope, sharp execution. Every screen earns its place, so the app stays fast and stays out of your way.

Got an app in you?

If you want something small, fast, and genuinely good built, talk to us. We take on a few projects at a time and build them like the toys above: small, fast, properly finished.

Start a project