Callsign icon

Callsign

⬇ 5,000+ downloads
Est. actual: 8,634
Free
No in-app purchases
No ads

Signals

3 this week · 2 positive All of this week's signals →
  • 📈Last 7 days +33 installs — 83% faster than the week before (+18) · 3/day since Oct 9
  • 🏆Among Communication apps top 12% by installs gained this week (185 peers growing)
  • 🛠Updates quiet · updated 41 days ago
Installs since launch
0 4.3K 8.6K 8.6K Oct 9 today
+93 installs since Oct 9
Update history
1.5.3 Oct 2, 2026 · seen Oct 21, 2026
一部の機種で音量が小さい不具合の修正
Only the current version so far — new entries appear as the app ships updates.

Callsign is a communication app by Sony Business Solutions Corporation with 5,000+ downloads (about 8.6K estimated). +33 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.

From the store listing: “Commercial radio using IP network (Transceiver · Income)”