Comparison

ContextStacker vs LLMChat

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

Head to head
About

ContextStacker

Features
Read full description

ContextStacker brings your workspace knowledge into one focused chat. Sign in with the same account you use on the web, then ask questions across readable documents and enabled API resources in your workspace. Answers stream as they are generated, support Markdown, and include source references so you can understand where the information came from. KEY FEATURES β€’ Ask across your entire workspace without choosing a single document β€’ Continue conversations shared with the ContextStacker web app β€’ Receive streamed answers with Markdown formatting β€’ Review document and API sources behind each answer β€’ Start new conversations and revisit chat history β€’ Switch workspaces and manage your account β€’ View your current plan and usage Use the web app to add or manage documents and API resources or invite members. Workspace owners and billing managers can subscribe to Pro Annual or Business Annual in the iOS app. Each plan clearly shows its annual price and included services before purchase. ContextStacker supports English, Simplified Chinese, and Japanese. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

LLMChat

Features
Read full description

LLMChat brings your LLMAPI conversations into a focused iPhone workspace. β€’ Chat with models supported by your subscription. β€’ Attach images, PDFs and documents when supported by the selected model. β€’ Organize conversations and reuse prompt templates. β€’ Keep conversations on your device, with export and optional WebDAV backup. β€’ Sign in with email, Google or Apple. Choose a Pro, Max or Ultra monthly subscription using Apple In-App Purchase, or sign in with an eligible existing LLMAPI subscription. No manual API key setup is needed on iOS. Prices and usage limits appear before purchase. Usage units are not a fixed number of messages; consumption varies with the model and input/output. Subscriptions automatically renew unless canceled at least 24 hours before the current period ends. Payment is charged to your Apple Account at confirmation. Manage or cancel in Apple Account settings. Deleting the app or your LLMAPI account does not cancel a subscription. Restore purchases using the same LLMAPI account used for purchase. AI responses can be inaccurate. Review important information and only share data you are permitted to send. Before sending, the app asks for permission to share chat content with LLMAPI and its model providers. Privacy: https://llmapi.pro/chat/privacy.html Terms: https://llmapi.pro/chat/terms.html Support: support@llmapi.pro

Screenshots

ContextStacker4 screens
LLMChat2 screens

Verdict

The call

The clearest difference is update cadence: ContextStacker at every 3 days against LLMChat's weekly. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. ContextStacker sells 2 in-app purchases, starting at $99.00 per year and LLMChat sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ContextStacker ships an update every 3 days, LLMChat weekly. Both last shipped on October 25, 2026.

Scorecard1 real difference Β· 5 level
ContextStacker versus LLMChat: the parameters behind the verdict, then further details
ParameterContextStackerLLMChat
PriceFreeFree
Update frequencyEvery 3 days β€” betterWeekly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 β€” better
Further details β€” not scored
Size7 MB41 MB
Age rating4+17+
Developer鹏源 ι‚±δΈŠζ΅·ε‹‹ιΈΏζ–‡εŒ–δΌ ζ’­ζœ‰ι™ε…¬εΈ

In-app purchases

2 purchases

ContextStacker

Subscriptions2
  • Pro Annual$99.001 Year
  • Business Annual$199.001 Year
3 purchases

LLMChat

Subscriptions3
  • LLMAPI Pro Monthly$7.991 Month
  • LLMAPI Max Monthly$39.991 Month
  • LLMAPI Ultra Monthly$149.991 Month

Questions

Is ContextStacker free?
ContextStacker is free to download, with in-app purchases available.
Is LLMChat free?
LLMChat is free to download, with in-app purchases available.
Do ContextStacker or LLMChat have ads?
Neither ContextStacker nor LLMChat shows ads.
Which is updated more often, ContextStacker or LLMChat?
ContextStacker ships an update every 3 days, and LLMChat weekly. Most recently, ContextStacker was updated on October 25, 2026 and LLMChat on October 25, 2026.

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