LLM Studio vs PromptCodex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LLM Studio
Experience powerful AI chatbots locally on your device without needing an internet connection. Choose from various open-source models and chat privately and securely, with all conversations remaining on your phone.
- Offline AI chat
- No internet required
- Data privacy
- Variety of open-source models
- Local device conversations
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Local AI brings powerful language models directly to your phone — no internet, no servers, no data sharing. Your conversations stay on your device, always. Choose from a variety of open-source models, download once, and chat forever. Fast, private, and completely offline. Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
PromptCodex
Manage and reuse AI prompts for various language models in a structured library. Create dynamic prompts with variables, save variants, and track usage. All data remains on your device for enhanced privacy.
- Organize prompts with folders, categories, and tags
- Create dynamic prompts with placeholders
- Save and compare prompt variants
- Browse and import curated sample prompts
- Track prompt copy counts and usage
- Offline functionality and device-only data storage
- Secure with Face ID/Touch ID
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PromptCodex is your personal AI prompt library. Create, organize, and reuse prompts for ChatGPT, Claude, Gemini, Copilot, Perplexity, Grok, and DeepSeek — all from one app. ORGANIZE YOUR WAY Build a structured library with folders, categories, tags, and projects. Nest folders up to five levels deep. Pin favorites for quick access and archive what you don't need. DYNAMIC VARIABLES Add placeholders like {topic} or {tone} to any prompt. Choose from text, dropdown, toggle, and date inputs — one prompt adapts to many uses. PROMPT VARIANTS Save multiple versions of each prompt. Compare, refine, and keep what works best. EXPLORE & LEARN Browse 1,000+ curated sample prompts by category. Import any prompt into your library with one tap. TRACK YOUR USAGE View copy counts, growth charts, and rankings for every prompt. PRIVACY FIRST All data stays on your device. No account required. No uploads. Works fully offline. Optional iCloud sync available. Lock with Face ID or Touch ID. Export and import your library as JSON. Supports iPhone and iPad. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: LLM Studio at 5.0 against PromptCodex's 4.3. LLM Studio also leads on update cadence (fortnightly vs every 2 months). On price, ratings volume, ads and in-app purchases 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
Both are free to download. LLM Studio sells 2 in-app purchases, starting at $2.99 per 7 days and PromptCodex sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
LLM Studio holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively.
LLM Studio ships an update fortnightly, PromptCodex every 2 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | LLM Studio | PromptCodex |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.3 (3 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 26.4 | 26.2 — better |
| Further details — not scored | ||
| Size | 12 MB | 75 MB |
| Age rating | 9+ | 4+ |
| Developer | Maxim Svitavsky | Life Utility Apps, LLC |
Customer experience
LLM Studio
PromptCodex
In-app purchases
LLM Studio
- Weekly Pro3 Days trial$2.997 Days
- Annually7 Days trial$99.991 Year
PromptCodex
- Monthly$2.991 Month
- Lifetime Access$14.99
Questions
Is LLM Studio free?
Is PromptCodex free?
Which has better reviews, LLM Studio or PromptCodex?
Do LLM Studio or PromptCodex have ads?
Which is updated more often, LLM Studio or PromptCodex?
Other comparisons
