Shortlist by what you need
Start here if you know why you are leaving Prompt Storm.
Want the closest match?
KnowItAll AI ChatMost similar to Prompt Storm in what it does, its category and its price.
Visit (opens KnowItAll AI Chat in a new tab)Need a free plan?
ArvinHas a free plan, rated 3.7 out of 5. Prompt Storm has none.
Visit (opens Arvin in a new tab)Want the lowest price?
Ninjachat AIFrom $11/mo, the lowest starting price here.
Visit (opens Ninjachat AI in a new tab)Want the best rated?
DapperGPTRated 3.7 out of 5 in our review, against 2.7 for Prompt Storm.
Visit (opens DapperGPT in a new tab)
At a glance
Green means better than Prompt Storm, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 Prompt StormBaseline | 2.7 | Not listed | No | Chrome extension from iMedia Revolution, LLC bundling curated prompts for ChatGPT, Gemini and Claude across research, writing, marketing and coding tasks. | |
| KnowItAll AI Chat | 3.7+1.0 | Free | YesPrompt Storm has none | IPhone chatbot and writing assistant giving access to Claude, ChatGPT, Gemini and Grok from one app, free to download. | vs Prompt Storm |
 HotBot AI | 3.0+0.3 | Free | YesPrompt Storm has none | One free chat interface for ChatGPT, Claude, Gemini, and more - write, learn, create images, summarize, analyze data, and translate, all in one place. | vs Prompt Storm |
| Arvin | 3.7+1.0 | Free | YesPrompt Storm has none | Browser extension and web app that puts GPT, Claude and Gemini chat, writing help, translation, PDF chat and image generation in one assistant, with daily free credits. | vs Prompt Storm |
 AlterMind | 3.0+0.3 | $12/mo | No | No-code builder for chatbots trained on your documents or URLs and embedded on your site, with a 7-day trial. | vs Prompt Storm |
| Ninjachat AI | 3.6+0.9 | $11/mo | No | All-in-one AI subscription bundling ChatGPT, Claude, Gemini, and 50-plus writing and media tools into one flat monthly fee. | vs Prompt Storm |
| DapperGPT | 3.7+1.0 | Free | YesPrompt Storm has none | A customizable interface layer that unifies ChatGPT, Claude, Gemini, and other models in one workspace. | vs Prompt Storm |
The alternatives in detail
In order of how closely each one matches Prompt Storm.
KnowItAll AI Chat
3.7Free
vs Prompt Storm+1.0Free plan
IPhone chatbot and writing assistant giving access to Claude, ChatGPT, Gemini and Grok from one app, free to download.
- Access to Claude, ChatGPT, Gemini and Grok from one app
- A 4.7 out of 5 App Store rating from 1,500-plus ratings
- Updated as recently as December 2025
A single app instead of switching between four provider apps
A third-party wrapper, not an official app from any model provider
HotBot AI
3.0Free
vs Prompt Storm+0.3Free plan
One free chat interface for ChatGPT, Claude, Gemini, and more - write, learn, create images, summarize, analyze data, and translate, all in one place.
- Single interface for ChatGPT, Claude, Gemini, and other leading models
- Writing help and writing improvement
- AI image creation
Access to multiple leading AI models without separate subscriptions
Unclear whether usage limits or premium tiers exist beyond the free offering
Arvin
3.7Free
vs Prompt Storm+1.0Free plan
Browser extension and web app that puts GPT, Claude and Gemini chat, writing help, translation, PDF chat and image generation in one assistant, with daily free credits.
- Chat in the browser through an extension with a keyboard shortcut
- Access to GPT, Claude and Gemini models
- Chat with PDF, AI search and email reply generation
Daily free credits across several models
Built on third-party models rather than its own
AlterMind
3.0$12/mo
vs Prompt Storm+0.3
No-code builder for chatbots trained on your documents or URLs and embedded on your site, with a 7-day trial.
- Chatbots built from uploaded documents or URLs
- Embeds on external websites
- Automatic user guides from long manuals
A low entry price of $12 a month
No company is named and the only contact is a Gmail address
Ninjachat AI
3.6$11/mo
vs Prompt Storm+0.9
All-in-one AI subscription bundling ChatGPT, Claude, Gemini, and 50-plus writing and media tools into one flat monthly fee.
- Unified access to GPT-5, Claude, Gemini, Grok, and Perplexity under one login
- Library of 50-plus specialized writing tools beyond general chat
- Image and short-form music generation bundled into the same subscription
Flat $11/month fee undercuts paying for several individual frontier-model subscriptions
No ongoing free tier; the $1 trial still requires a card and converts to a paid plan
DapperGPT
3.7Free
vs Prompt Storm+1.0Free plan
A customizable interface layer that unifies ChatGPT, Claude, Gemini, and other models in one workspace.
- Single interface across OpenAI, Anthropic, Google, Mistral, Grok, and Llama models
- Chrome extension for using the assistant across other websites
- AI-generated notes tied to chat conversations
Bring-your-own-key pricing means users pay providers directly instead of a markup
Requires a user to already hold API keys from providers, which adds setup friction for non-technical users
FAQ
Questions people ask
Is Prompt Storm free?
Prompt Storm does not list a free plan. Check its pricing page for current plans.
What is the best free alternative to Prompt Storm?
KnowItAll AI Chat is the highest-rated alternative here with a free plan (3.7 out of 5). Other free options: Arvin, DapperGPT, HotBot AI.
What is the cheapest alternative to Prompt Storm?
Among paid plans, Ninjachat AI has the lowest starting price (from $11/mo). If you need it free, start with KnowItAll AI Chat.
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.