Software by GLAdrian Gutierrez · Personal Software & AI
Beta on TestFlight
Sentinel app icon
SOFTWARE BY GL · PRIVATE MULTI-MODEL AI

Sentinel

Frontier Intelligence. Under Your Wing.

One private chat for Apple Intelligence, ChatGPT, Claude, Gemini, and Muse — and the 3D Cybernetic Peregrine Falcon character of Software by GL. Bring your own keys, set spending limits, and give your AI a soul of its own. Protected by zero-knowledge GLS1 encrypted sync.

Coming soon to theApp StoreRequest a TestFlight Invite
iPhone, iPad & MacZero-knowledge encrypted syncNo subscription during the Beta
Sentinel — the Chat screen on iPhone
4 Core Intelligence Modules

One App for All Your AI Needs.

Connect your own frontier accounts, customize your AI’s persona, and keep every conversation and spending limit under your direct control.

Sentinel — the Connect AI screen listing Apple Intelligence, ChatGPT, Claude, Gemini and Muse
Connect AI

Apple Intelligence, ChatGPT, Claude, Gemini and Muse, one app

Start immediately with built-in Apple Intelligence at no cost, or connect your own account with each company's API key and pick which AI answers each message. When you switch, the new AI gets your latest messages in full and a short summary of earlier ones.

Sentinel — the AI Soul screen with agent name and persona
AI Soul

Give your AI a personality

Name your assistant, write its persona, and add your own directives. Every message to every AI is shaped by your Soul.

Sentinel — the Spend & Caps screen with a daily guardrail and monthly limits
Spend & Caps

Know what you spend, and cap it

Set a monthly limit for each AI and a daily safety guardrail. Spend is calculated from token usage, and your AI company's bill is the final word. Sentinel stops sending once a limit is reached and can notify you at half and at 80 percent.

Sentinel — the Menu with your chats, AI Soul, Connect AI and Spend & Caps
Privacy First

Zero-knowledge encrypted sync

Chats, saved memories (up to 1,000), and your AI Soul sync across iPhone, iPad, Mac, and Web with end-to-end GLS1 (AES-256-GCM) zero-knowledge vault encryption. Gold Life never holds your master key and cannot read your data. Your spend history stays on-device, and your API keys stay in memory for your session unless you turn on Save API Key.

Native Split-View Workspace

Made for iPad Too.

Your conversations sit beside the chat, and the Menu opens from the sidebar button. You can also take the chat full screen.

Sentinel on iPad — the Conversations list beside a chat
3D Identity & Optical Telemetry

Precision in Flight. The Living Emblem of Sentinel.

Sentinelembodies our Cybernetic Peregrine Falcon — engineered in matte black titanium, carbon-fiber wing vanes, and brushed champagne-gold servos with 7 optical telemetry states that mirror how your AI thinks, speaks, and enforces your spend guardrails.

Machined Titanium. Articulated Intelligence.

Built to the Gold Standard with physically based metallic shaders, morphological 4K feather masks, and a custom skeletal rig — perched atop an obsidian plinth while its internal seam emitters shift color in real time.

Matte Black Titanium (#0D0E12)

Precision-machined armor plates, satin carbon-fiber primary wing vanes, and an articulated speech beak rig.

7-State Optical HUD & Seams

Dynamic internal illumination shifts across Speaking Gold, Thinking Sapphire, Verified Emerald, and Overdrive Crimson.

Brushed Champagne Gold (#D4AF37)

Anodized mechanical talons, hydraulic wing-fold servos, and a recessed gold-rimmed obsidian plinth.

3D iPhone Tutorial Host

Deploys a floating 3D device stage alongside its wing to guide real-time native iOS walkthroughs and sprints.

Sentinel — Cybernetic Peregrine Falcon character of Software by GL
Idle Vigilance
#D4AF37

Warm champagne-gold optical ring and subtle breathing seam illumination on standby.

Speaking & Host
#F5E6C8

Articulated beak synchronization with bright gold acoustic pulse along the neck plates.

Deep Reasoning
#38BDF8

Recessed sapphire-cyan HUD optics while routing prompts across frontier models.

Multimodal Synthesis
#A855F7

Amethyst seam pulse when inspecting attached photos, PDFs, or long context windows.

Verified Complete
#34D399

Crisp emerald wing-tip confirmation lock when a task or code audit passes.

Spend Guardrail (50% / 80%)
#F59E0B

Amber telemetry alert as token usage approaches your daily or monthly threshold.

Hard Cap Lock
#EF4444

Crimson cutoff lock when a configured spend limit is reached — zero further requests sent.

No Ads · No Analytics in the App · No Tracking

Uncompromising Protection.

Sentinel is built so the private parts stay with you. Your keys stay on your device (or in your iCloud Keychain if you turn on Save API Key), your chats, memories, and AI Soul sync with zero-knowledge GLS1 encryption, and your messages go only to the AI companies you connect after you tap Allow Sharing. The Sentinel app has no ads, no analytics of its own, and no tracking, and Gold Life never sells your data or reads your chats. Details are in the Privacy Policy.

Keys under your control

Your API keys stay in memory for your session (or in your iCloud Keychain if you turn on Save API Key) and are never sent to Gold Life. A key goes only to the AI company it belongs to.

Zero-knowledge encrypted sync

Chats, saved memories (up to 1,000), and your AI Soul sync seamlessly across iPhone, iPad, Mac, and Web with end-to-end GLS1 (AES-256-GCM) zero-knowledge vault encryption. Gold Life never holds your master key and cannot read your data. BYOK API keys and spend history stay on-device.

You allow sharing first

Before your first message goes to an AI, Sentinel asks you to tap Allow Sharing. None of your messages or files are sent until you do.

Sign out and it’s gone

Signing out deletes your chats, saved memories, AI Soul, spend history and unsaved connection keys from the device.

Spending limits you control

A daily guardrail and a monthly limit for each AI stop Sentinel from sending once your calculated spend reaches the cap. Also set limits in each company’s billing console.

Direct Answers

Questions, Answered.

Where can I get it?

Sentinel is in Beta on TestFlight and is not on the App Store yet. If you have an invite, download it with TestFlight on your iPhone, iPad, or Mac. To ask for one, email support@softwarebygl.com.

What does it cost?

Sentinel has no subscription or in-app purchase during the Beta. You pay each AI company directly for what you use with your own API key, and Spend & Caps tracks your usage so you can set limits.

Which AIs can I use?

Apple Intelligence (built-in and free on compatible devices), plus ChatGPT (OpenAI), Claude (Anthropic), Gemini (Google), and Muse (Meta) with your own API keys. Muse takes text only; the cloud providers also read photos and PDFs you attach.

Where is my data stored?

Your spend history stays on this device, and your API keys stay in memory for your session (or in your iCloud Keychain if you turn on Save API Key) and are never sent to Gold Life. Chats, saved memories (up to 1,000), and your AI Soul sync across your devices using end-to-end GLS1 (AES-256-GCM) zero-knowledge encryption — Gold Life never holds your master key and cannot read your plaintext. Signing out wipes local data from this device while your encrypted vault backup remains safe. Your messages go from your device to the AI company you connect, and only after you tap Allow Sharing.

Do I need to create an account?

Yes. Sentinel uses a Gold Life ID (email or phone verification code, Passkey, or QR device handshake). You can also explore with sample data first, which never contacts an AI.

What devices does it run on?

iPhone, iPad, and Mac (running iOS/iPadOS 26 or macOS 14 or later).

Is it available in Spanish?

Yes. The app is in English and Spanish.

What is Software by GL?

Software by GL is software engineer Adrian Gutierrez’s personal software craft — every app in the Gold Life environment is designed, built, and maintained by him. More on Adrian and the craft ↗
Sentinel app icon
Beta on TestFlight

The Gold Standard, In Your Pocket & on Your Mac.