Siglos Karaoke Professional (PowerKaraoke) is a Windows karaoke hosting app that uses your own library. Official shop price is $119 perpetual per user (two machines if you're the only user), one year of updates, then optional ~$39/yr to keep getting new builds. Windows 10/11 only. It indexes your MP3+G/ZIP library, runs a rotation, does dual-screen lyrics, and offers phone requests via a local network or ConnectKaraoke.com.
It supports a familiar Windows hosting setup. Auto-KJ offers the Fairness Engine, cloud singer phones with our full Social Engine, Break-Wave (dual-deck DJ mixer with beat/key matching automixing), full library management, LAN failover, kiosk, remote, and OpenKJ songbook hosting. Free version is desk-entered only — no phones — and is $0. Full version is ~$10/mo after a 60-day no-card trial. Pay once. Run up to four shows. Auto-KJ Lifetime is $500, one time. Everything in the full version, with up to 4 shows running at the same time. No monthly bill.
| Siglos Karaoke Professional | Auto-KJ | |
|---|---|---|
| Library | BYO (CD+G, MP3+G/ZIP, MIDI, video, YouTube, PartyTyme add-on) | BYO MP3+G/ZIP — your pressings, your disk |
| Price | ~$119 perpetual (Windows shop, 2026) | Free version $0 · Full version ~$10/mo · Pay once. Run up to four shows. Auto-KJ Lifetime is $500, one time. Everything in the full version, with up to 4 shows running at the same time. No monthly bill. |
| OS | Windows only | Windows x64 / ARM64, Intel / Apple Silicon Mac, Linux x64 |
| Rotation | Automatic queue / "who's next" | Fairness Engine: late arrivals, duets, pause, song-change |
| Phones | Remote queue + ConnectKaraoke | Phone browser, GPS show finding, or local network |
| Screens | Booth + singer display (clones possible) | 3-screen rig (host / singer / audience) |
| Offline | Local playback; no activation required | Local playback + Full version LAN failover mid-show |
| Trial | Evaluation download | 60-day no-card Full version trial in the app |
When Siglos is the right call
You want a one-time Windows license and you're done. You play CD discs, MIDI/KAR, YouTube karaoke, or PartyTyme as first-class sources. You've run Siglos for years and the muscle memory is paid for. Check the formats you use before choosing either app.
When Auto-KJ is the right call
The arguments are about who sings next, not which container the file is in. You want singers to watch the same live list from their phones. You jump between a Mac at home and a Windows stick at the bar. You'd rather try the Full version for 60 days than buy a perpetual license to find out. Read the rotation rules and throw chaos at the Fairness Engine simulator before you uninstall anything.
Your tracks stay on disk either way. Point Auto-KJ at the same folders. Try the Free version at a practice session or a quieter show before deciding. Siglos can stay on the backup laptop.
Siglos price and feature claims cited from PowerKaraoke's Siglos Pro page and shop (2026). Confirm live pricing before you buy either product.
Try it with the library you already have.
Download the Free version, point it at your Siglos folders, and keep your existing setup available while you get comfortable with Auto-KJ.