rothertech.
Independent software

Small apps that do one thing properly.

Built by one person who has been writing software since dial-up. Three kinds of things: mobile apps that come with a promise (cheap or free, no ads, and your data stays yours), productivity tools for getting real work done with Claude, and side quests, the odd little ideas. Each works on its own deal, and I’d rather say so up front.

Three kinds of things I build

Mobile apps, productivity tools and side quests each run on their own rules, and I’d rather you knew which is which.

A solid commitment

The mobile apps

iOS and Android

Cheap or free. Pay once, if at all. Updates included.
No ads, ever. Not later, not “rewarded”.
No upsells. No subscriptions, no Pro tier, no worse free version.
Your data stays on your phone. We don’t collect it, so there’s nothing to harvest or sell.
Your work, kept to its job

The productivity tools

On the web

Built for real work. Web tools built around working with Claude. I built them for my own work first.
Subscription, never ads. If one becomes a service other people use, it’s paid for with a subscription, because I’d be hosting your data and running it for you.
Your data does one job. It’s used for the tool’s job and nothing else. In Korabo, that job is hearing from you and turning it into better products.
Never marketed, sold or mixed. Never used to market to you, never sold, never pooled with anyone else’s. You can delete your Korabo account yourself; Kantan accounts are deleted on request for now.
A different deal

The side quests

On the web

Built for the fun of it. Odd little ideas I’ve wanted to build for years. They’re my creative outlet.
Free, paid for by ads. Websites cost money to run and I don’t charge for these, so they show ads. The ad network may personalise them, and you can opt out.
They know who you are. Voting and posting need a sign-in with Google or Apple, and they collect usage data to understand what people use and to target ads.
Never sold. Your data isn’t for sale, and you can delete your account and its data yourself, any time.
How the mobile apps work
01

Nothing is collected

No analytics, no crash reporting, no advertising SDKs. Not "anonymised" — absent. Every app ships with a privacy policy short enough to read in full.

02

Pay once, own it

Free, a dollar, or a few: paid one time if at all, with updates included forever. Some you can try in full before you pay. No subscriptions, no tiers, and no feature that exists only to sell you the next one.

03

A person answers

Bug reports and ideas go to the one developer who wrote the code. Sometimes that means a slow reply. It never means a ticket bot.

The mobile apps

No ads now.
No ads ever.

This is the promise for the mobile apps. No tricks. Once you've paid for it, it's yours — not a rental, not a funnel, not an audience being grown for someone else.

01 No ads added later An app that launches ad-free stays ad-free. There is no update that quietly slips a banner in once you’ve settled.
02 No subscription creep What you bought is what you keep. Nothing moves behind a paywall, and no feature you paid for becomes "Pro".
03 No crippled free version There’s no cut-down tier designed to annoy you into paying. If an app has a free trial, the trial is the whole app, and when it ends, everything you’ve logged is still yours to see, back up and export.
04 No data as payment You paid with money, so you don’t pay again with your attention or your information.

Mobile apps

All mobile apps →
Nerd Toolkit In beta testing Twenty-one network, measurement and utility tools in one app. A dollar, once — no ads, no sign-up, updates forever. ANDROID · $1 ONCE Axel Available now Permit-test practice and behind-the-wheel logging for teen drivers. $4.99 once, never a subscription. IOS · $4.99 ONCE Ripple In beta testing Period tracking where the data never leaves your phone. No account, no server, no analytics — nothing for anyone to request or sell. ANDROID · IOS · 90 DAYS FREE, THEN $9.99 Old Iron In beta testing A workout tracker for lifting at home that tells you when to add weight and rotates exercises so you don’t plateau. Free, and it never leaves your phone. ANDROID · FREE TimeSnap In development Recreate an old photo: same people, same spot, years later. The old photo floats over your camera, with outlines and hints to line it up, and it never goes online. Working name. ANDROID · IOS Silverwait In development A film camera with no screen to check. Shoot the whole roll, drop it at the lab, and wait days for your prints. Seven period cameras, seventeen films. Free, and your rolls never leave your phone. ANDROID · IOS · FREE

Productivity tools

All productivity tools →

Web tools for getting real work done, built around working with Claude. No ads, and your data does the tool’s job and nothing else.

Side quests

All side quests →

The odd little ideas. They’re free to use and paid for by ads, so they collect usage data. They never sell it.