K Kairovo
ScoreSifter v1.0 — live
IndexKA-000 / Studio
StudioKairovo, NZ
CatalogueFour apps — one suite
Edition2026.04

Software built
for the music room.

Focused desktop tools for singers, teachers and répétiteurs. No cloud dependency, no subscriptions, no accounts. ScoreSifter is permanently free. RecitalAtlas and AriaDesk include a 30-day fully functional trial before purchase.

Get ScoreSifter — free ↗ See all apps ↓
ScoreSifter
Sheet music batch renamer
Live — free
RecitalAtlas
Recital planning & repertoire
Beta prep
AriaDesk
Voice studio CRM
In dev
Vocemetry
Voice analytics
In dev
§ 01   The suite

Four tools. One philosophy.

Each app stands alone — built around one problem, done well. Together they cover the full desktop workflow for classical voice.

ScoreSifter Rename a folder of sheet music files in one pass

Matches filenames against a 43k-work catalogue, writes forScore-compatible metadata into every file. Offline, reviewable, reversible. Free on macOS, Windows and Linux.

scoresifter.com → Live — free
RecitalAtlas Programme and archive recitals, track repertoire

A local SQLite database for singers, teachers and concert programmers. Artists, repertoire, scores and programs — all in one offline desktop app. 30-day free trial, then a one-time purchase.

recitalatlas.com → Beta prep
AriaDesk Voice studio CRM — students, lessons, scheduling, invoicing

Native macOS. Quiet by default. For the singing teacher who wants to run their studio from a single app — without adopting a cloud platform or a subscription. 30-day free trial, then a one-time purchase.

ariadesk.com In development
Vocemetry Voice analytics for singers

Track range, stamina and technical progress over time. Private, always on you. iOS app — one-time purchase on the App Store.

vocemetry.com In development
§ 02   Principles

Three things we won't compromise on.

Kairovo is small on purpose. These constraints are load-bearing — they're why the software stays simple and stays yours.

01

Local-first, always

Your data lives on your machine. No accounts required, no internet dependency, no service shutdowns taking your work with them. Your library is yours, indefinitely.

02

One-time pricing

Try the software free for 30 days — fully functional, no restrictions. If it works for you, pay once and use it indefinitely. No subscription, no renewal, no expiry.

03

Built for the real workflow

The features that exist are the ones that real singers and teachers actually need. Nothing is added for a feature list. Nothing is left out to justify a higher tier.

§ 03   Shipping

What's shipping
and what's next.

One app is live. One is in beta preparation. Two are in active development.

# App Platform Stage Progress Next milestone
01 ScoreSifter macOS · Win · Linux Live · v1.0
Ongoing catalogue updates
02 RecitalAtlas macOS · Win · Linux Beta prep
Signed builds · Q2 2026
03 AriaDesk macOS (native) In design
UI shell · Q3 2026
04 Vocemetry iOS Module in test
Squillo Meter · TestFlight
§ 04   Questions

Frequently asked.

Q.01Is Kairovo software really local-first? No cloud at all?+
Yes. Every Kairovo app stores its data in a local SQLite database on your machine. No account is required to use any app. No data is synced to a server. ScoreSifter optionally queries MusicBrainz for works not found in the local catalogue — that's a lookup of a filename, not your data. Everything else is offline.
Q.02What does "one-time pricing" mean in practice?+
Desktop apps (RecitalAtlas, AriaDesk) are free to try for 30 days — fully functional, no feature restrictions, no account required. After 30 days the app stops working until you purchase a licence. The licence is a one-time payment: no subscription, no renewal, no expiry. Updates within the major version are included. Vocemetry is an iOS app sold as a one-time purchase on the App Store — no separate trial period applies. ScoreSifter is permanently free.
Q.03Which platforms are supported?+
ScoreSifter ships for macOS (Apple Silicon + Intel universal), Windows 10/11 x64, and Linux AppImage. RecitalAtlas will ship the same. AriaDesk is native macOS only. Vocemetry is iOS — available as a one-time purchase on the App Store. macOS has the most development time and testing for the desktop apps.
Q.04When is RecitalAtlas available?+
RecitalAtlas is in beta preparation — feature-complete and in testing. It will be available later in 2026. Sign up for the newsletter to get notified when it launches, including early beta access.
Q.05What's the refund policy?+
ScoreSifter is free — nothing to buy. RecitalAtlas and AriaDesk include a fully functional 30-day trial before purchase. Refunds on those are issued case-by-case within 30 days — email hello@kairovo.com with your order number. Full details in the terms.
Q.06Who is behind Kairovo?+
Kairovo is run by Derek, based in New Zealand. He has been singing professionally for 20 years — the apps come directly out of that: noticing the small frustrations that add up across a career and building tools to remove them. Independent studio, no investors, no growth targets.