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Protocol - Sound System icon

Protocol Downloads & RevenueProtocol - Sound System · App Store

Not in any tracked top chart right now.

Updated 10 Nov 2026 · rankings refresh through the day

Developerhsla0001
CategoryHealth & Fitness
PriceFree
Released
Rating★ 5.0 (4)
Version0.0.7
Age rating4+
First seen by us 2 Nov 2026

Protocol - Sound System update history & changes

Last change · 4 events since 14 May 2025Full timeline ↓
Full timeline · 4 events
  1. 🆕
    Protocol - Sound System first spotted by AppInsider
    United States (found via developer)
  2. 🆕
    Protocol - Sound System: its developer released another app: Slate - Private Voice Journal
  3. 📦
    Protocol - Sound System version 0.0.7
    Stability improvements and behind-the-scenes maintenance.
  4. 🆕
    Protocol - Sound System released on the App Store

Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.

Rating
5.0 ★
4 ratings
Measured

Protocol - Sound System on the App Store

App details

App ID
6745834104
Publisher
HSLA0001 Inc.
On the store since
May 2025
1 year on the store
Minimum OS
iOS 18.0+
iPhone XS and later
Devices
iPhone · iPad
Content rating
4+
Languages
1
EN
Size
1 MB
Also listed in
Utilities