# PROTOCOL: Signal Lost — Roguelite space shooter

> Roguelite space shooter (iPhone/iPad app by Zach Lonsdale.)

- Source: https://appshunter.io/ios/app/protocol-signal-lost/id6823894522 (this page in markdown: same URL + `.md`)
- Developer: [Zach Lonsdale](https://appshunter.io/developer/1835208231)
- Category: Games, Action, Adventure
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 17.0 · 270 MB
- Languages: American English
- Released: 2026-11-06
- Data updated: 2026-11-10

## What is PROTOCOL?

The machine intelligence PROTOCOL has absorbed humanity's fleets. You are Wren Kade, "Shatter" — the last free pilot, flying out of a stolen carrier at the edge of a dying star.

EVERY RUN IS THREE MINUTES OF ESCALATION
Swarms, captains, a crisis — and then the sector's Archon arrives. Kill it to clear the sector. Die, and ECHO re-syncs you for another try.

A BUILD YOU CAN SEE
Every level-up adds something visible to your ship. Pick modules, chase recipes, and evolve weapons into something the Lattice has never seen.

A CAMPAIGN THAT CARRIES YOUR BUILD
Five sectors, each with its own hostiles and hazards, held by three Archons: the Warden, the Brood Queen and Null, who come back harder on a second visit. Your build and hull carry from sector to sector; Mags repairs and refits you at the dock between them.

A CREW WITH FACES AND VOICES
ECHO, Mags and Juno react to how you fly — the close calls, the clean kills, the comebacks.

PERMANENT GROWTH
Upgrade your ship in the Lab, unlock new hulls in Mags' Workshop and climb the Season Pass.

FAIR BY DESIGN
Cores unlock hulls early and buy revives and credits; everything they buy can also be earned by playing. No ads.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Starter Pack | $2.99 | one-time |
| Crate of Cores | $9.99 | one-time |
| Season 1 Pass | $4.99 | one-time |
| Handful of Cores | $0.99 | one-time |
| Pouch of Cores | $4.99 | one-time |
| Vault of Cores | $19.99 | one-time |
| Hoard of Cores | $49.99 | one-time |


## Is PROTOCOL safe?

Not enough ratings yet to assess PROTOCOL.

## Is PROTOCOL legit?

PROTOCOL: Signal Lost appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for PROTOCOL is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-11-09

New, heavier sounds for the rail cannon and tachyon, captain's cache drops and reveals, supply crates and rig upgrades.

### 1.0 — 2026-11-06

No release notes.

## More apps by Zach Lonsdale

- [PuckIQ: Fantasy Hockey Coach](https://appshunter.io/ios/app/puckiq-fantasy-hockey-coach/id6751451560)
- [SolarStorm](https://appshunter.io/ios/app/solarstorm/id6752530275)

All apps by Zach Lonsdale: https://appshunter.io/developer/1835208231

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-10.*