Comparison

Prompt Security GenAI Shield vs LLMster

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Prompt Security GenAI Shield

This Safari extension detects generative AI websites and protects sensitive data by blocking or redacting personal information, code, and secrets. It helps users maintain privacy and comply with data regulations.

Highlights
  • GenAI site detection
  • Dynamic data protection (PII, PCI, PHI, code, secrets)
  • Block, redact, or anonymize data
  • User-friendly interface
  • Compliance with data regulations (GDPR, HIPAA)
Features
Read full description

Introduction: In an era where Generative AI is revolutionizing digital interactions, the risk of unintentionally exposing sensitive data to AI-powered websites has never been higher. Prompt Security is a pioneering Safari extension designed to tackle this challenge head-on, ensuring your online activities remain private and secure. Secure your data against GenAI exposure with Prompt Security! Safeguard your sensitive information by detecting GenAI sites and employing robust measures to block or redact PII, PCI, PHI, code, secrets, and more. Protect your privacy and comply with data regulations effortlessly! Features: 1. GenAI Site Detection: Utilizes advanced algorithms to identify websites that use generative AI, ensuring comprehensive coverage and protection. 2. Dynamic Data Protection: Offers versatile solutions to secure sensitive data, including PII, PCI, PHI, proprietary code, and confidential secrets. 3. Choose between blocking data transmission, redacting information, or anonymizing details to suit your needs. 4. User-Friendly Interface: Easy to install and configure, Prompt Security offers a seamless user experience without compromising on security. 5. Compliance and Privacy: Assists organizations and individuals in adhering to stringent data protection regulations, such as GDPR, HIPAA, and more, by preventing inadvertent data leaks to GenAI platforms. Benefits: 1. Protect against data breaches and enhance online privacy. 2. Ensure compliance with global data protection laws. 3. Peace of mind knowing that your sensitive information is guarded against emerging threats posed by generative AI sites. Who It's For: Ideal for professionals, businesses, and anyone concerned about the privacy and security of their online data. Whether you're handling customer information, managing health records, or dealing with sensitive corporate data, Prompt Security is your first line of defense against GenAI-related data exposure.

About

LLMster

Connect to local AI models for fast, private conversations on your iPhone or iPad. Manage your models, organize chats, and utilize features like vision and hands-free voice interaction. Your data stays on your device and server.

Highlights
  • Connect to local AI models
  • Private by design, no cloud relay
  • Organize chats by title, model, or folder
  • Vision support for image-based conversations
  • Hands-free voice chat with on-device speech recognition
  • Stream reasoning and rich Markdown responses
  • Background processing with Live Activities
Features
Read full description

Local AI, in your pocket. LLMster is a fast, private iPhone and iPad client for models running on your LM Studio server. Stream replies, reasoning, tool activity, and image-based conversations from the models you host—in an app designed to feel at home on iOS. Private by design LLMster connects directly to the server you choose. There’s no LLMster account, telemetry, hosted chat service, or cloud relay in the middle. Your conversation library stays on your device, while model context stays with your configured server. External integrations run only when you choose to enable them. Your models, wherever you run them Keep your models on the machine built for them: a workstation, home server, or always-on computer. Run the LM Studio desktop app or LM Studio’s headless daemon, point LLMster at the host, and start chatting. No companion desktop client is required. Choose the right model without leaving the conversation: • Search or sort by name, size, or format, then pin favorites • See which models support vision, reasoning, or tool calls • Change models without starting a new chat Organized from the start Search chats by title, model, or folder. Browse recent conversations across every folder, then organize, rename, pin, or duplicate important threads. Move and protect your chats Share individual conversations as .llmster files and import them on another device while preserving messages, images, reasoning, tool history, and chat settings. Back up and restore your entire local chat library—including folders, pins, drafts, and attachments—with optional password protection. Backups do not include server addresses, authentication keys, or app-wide settings. LLMster also verifies transferred response context against your configured LM Studio server before continuing a chat. Vision, direct to your server Attach up to four screenshots, photos, or scanned pages to a message and send them to a compatible vision model. LLMster resizes and compresses images on your device before sending them, so the originals remain with you. Open any attachment and pinch to zoom when you need to inspect the details. Hands-free voice chat Talk naturally using on-device speech recognition and text-to-speech. Audio stays on your device; only the resulting text is sent to your configured server. Natural turn-taking and subtle haptics keep the conversation moving without touching the screen. Control each conversation Every chat can have its own: • Integrations already configured in LM Studio • Custom system prompt • Tool-call visibility • Live reasoning preference Stream reasoning as Markdown while the model works, or keep the interface quiet with a compact Thinking indicator and open the completed reasoning when you want it. Control response auto-scrolling, and choose System, Light, or Dark appearance with your preferred accent color. Rich responses, as they arrive LLMster renders streaming Markdown smoothly, including syntax-highlighted code with copy controls, inline and block math, tables, links, lists, and more. Export or share transcripts with their original Markdown intact. Keep going while you move on LLMster asks iOS to continue eligible responses after you leave the app. When the system starts continued processing, progress appears as a Live Activity on the Lock Screen and, on supported iPhones, in the Dynamic Island. When a background response completes, LLMster can notify you locally—without routing your conversation through a push server. Tap a notification or Live Activity to return to the correct conversation. Setup instructions are available at https://llmster.app/support

Screenshots

Prompt Security GenAI Shield3 screens
LLMster4 screens

Verdict

The call

The clearest difference is device support: Prompt Security GenAI Shield at 4 against LLMster's 2. Prompt Security GenAI Shield also leads on iOS requirement (15.0 vs 26.0). On price, rating, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Prompt Security GenAI Shield against 5.0 for LLMster. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

UpkeepUpdate frequency

Prompt Security GenAI Shield ships an update every 8 days, LLMster every 11 days. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.

Scorecard2 real differences · 7 level
Prompt Security GenAI Shield versus LLMster: the parameters behind the verdict, then further details
ParameterPrompt Security GenAI ShieldLLMster
PriceFreeFree
Rating5.0 (2 ratings)5.0 (3 ratings)
Number of ratings23 — better
Update frequencyEvery 8 days — betterEvery 11 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size1 MB10 MB
Age rating4+4+
DeveloperPrompt SecurityDave Sebek

Customer experience

Prompt Security GenAI Shield

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

LLMster

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Prompt Security GenAI Shield

No in-app purchases

None

LLMster

No in-app purchases

Questions

Is Prompt Security GenAI Shield free?
Prompt Security GenAI Shield is free to download, with no in-app purchases.
Is LLMster free?
LLMster is free to download, with no in-app purchases.
Which has better reviews, Prompt Security GenAI Shield or LLMster?
Prompt Security GenAI Shield and LLMster are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.
Do Prompt Security GenAI Shield or LLMster have ads?
Neither Prompt Security GenAI Shield nor LLMster shows ads.
Which is updated more often, Prompt Security GenAI Shield or LLMster?
Prompt Security GenAI Shield ships an update every 8 days, and LLMster every 11 days. Most recently, Prompt Security GenAI Shield was updated on October 6, 2026 and LLMster on October 22, 2026.

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