Independent iOS studio · est. on-device

We build pocket instruments that just work.

RBApp makes focused reference and utility apps for iPhone and iPad — fast, private, and refreshingly free of accounts, ads and tracking.

Browse the apps How we build

RBApp · system status

accounts to create

ads or trackers

data collected

Multilingual

localized per region

The catalog

Different jobs, one promise: it just works.

Tap any title to open its page. Each app ships with its own privacy policy.

RB-01 Productivity

Recapio

Turns voice and video into clean text — transcription, AI summaries, speaker labels and subtitles, all on your iPhone and iPad.

Open Privacy

RB-02 Reference · Auto

Car Parts

Find the original (OEM) part for almost any car by VIN or model, in clear exploded diagrams — with part numbers, analogs and fitment. 40+ brands.

Open Privacy

RB-03 Diagnostics

OBD Connector

Local-first OBD-II car diagnostics for iPhone. A live dashboard, fault codes and trip logs — with no account, no analytics, no servers.

Open Privacy

RB-04 Traffic law · US

Traffic & DMV

U.S. traffic laws, MUTCD road signs, fines, DUI rules and a DMV practice test — organized by state. Works offline, no account.

Open Privacy

RB-05 Traffic law · DE

Bußgeldkatalog

Germany's traffic-fine catalog, the StVO, road signs and points in Flensburg — searchable and completely offline.

Open Privacy

RB-06 Traffic law · RU

Памятка ГИБДД

A field reference for Russian traffic officers — code articles with ready-made wording, fines, road signs and the full rules of the road. Fully offline.

Open Privacy

How we build

The same four rules behind every app.

No fine print. These are the constraints we design within.

No accounts, ever

Open the app and start. There's nothing to sign up for and nothing to log in to — the tool is ready the moment you install it.

Private by design

No ads, no trackers, no analytics, no profiles. We don't collect your data — so there's simply nothing about you for us to keep or sell.

Offline whenever it can be

Most of our apps carry their whole library inside and work with no signal at all. The rest reach the network only when they genuinely need to.

Focused, then maintained

Each app does one job and does it well — and we keep it sharp with updates over time.

Get in touch

Have an idea, a bug, or a partnership?

We read every message. Tell us what you're building or what could be better in one of our apps — we'll get back to you.