Chatarmin alternative: WhatsApp, AI and RCS compared

Compare charles and Chatarmin for ecommerce marketing, from WhatsApp Forms and messaging channels to AI, pricing and how your team builds campaigns.

What is Chatarmin, and who is it for?

Chatarmin, also branded as armin, was founded in 2022 by Johannes and Armin. Its main team is based in Vienna, and it serves brands including ecommerce businesses, particularly in the DACH region.

Its WhatsApp marketing product combines campaigns, audience segmentation, automated journeys, an inbox and AI assistance, with integrations into tools such as Shopify and Klaviyo. This makes it a relevant option for brands adding WhatsApp to their retention setup.

The company also offers armincx for AI customer support, purchased separately and integrated with Chatarmin. Chatarmin says both products can use the same WhatsApp number. Buyers should assess the marketing and support packages together to understand the combined price and what each includes.

charles is also focused on ecommerce and retail. It has been building WhatsApp marketing for these brands since 2021, with campaigns, segmentation, shop integrations and automated customer journeys. That experience now informs charles cowork. AI customer support and an inbox are part of charles too, alongside enterprise-level security.

The differences that matter

Chatarmin sources: marketing and armincx, MCP and ISO 27001, and native WhatsApp Forms guidance. charles sources: ecommerce, charles cowork, Forms, marketing journeys, customer service, ISO certificate and security assurance.

A SOC 2 Type II report assesses whether relevant controls operated effectively over a defined period. For buyers, it adds independent assurance when evaluating a software provider.

1. charles cowork: AI chat and the visual editor together

Chatarmin offers an MCP connection to external assistants such as Claude and ChatGPT. That can be useful for asking questions, retrieving data and starting tasks from an assistant your team already uses.

When you are building a flow, seeing the changes matters too. charles cowork puts the prompt and visual editor next to each other. Inspect what it creates, guide a precise change through chat, or make a small edit directly when that is easier than describing it.

For example, ask charles cowork to build an abandoned-cart flow. Discuss the audience, timing and messages, then review the flow as it takes shape. Ask it to change a branch, adjust a message yourself, and decide when the draft is ready to publish.

charles cowork combines available account context with years of ecommerce and retail WhatsApp marketing knowledge. It can also analyse results and help improve campaigns, bringing the best practices into the work as your team needs them.

2. WhatsApp Forms: richer experiences inside the chat

charles supports native WhatsApp Flows, also called WhatsApp Forms: structured experiences that open inside the chat. Customers can choose products, share preferences or request an appointment without switching to a website.

These can work like small interactive websites inside WhatsApp. Dynamic Forms can pull live data from connected services, such as available calendar slots, and change the next set of options based on a previous selection. Dynamic experiences are configured with the charles team to connect the relevant systems.

charles connects published WhatsApp Forms to journeys and saves responses to contact properties for segmentation and personalised follow-up. A shopper’s product preferences can inform the next recommendation; an appointment selection can continue into a booking journey.

Chatarmin also publishes guidance on native WhatsApp Forms. The public material reviewed does not establish how these Forms connect to its marketing product, so this comparison does not treat that integration as confirmed. In a demo, ask to see the form, the saved answers and the follow-up journey together.

Forms can reduce messaging costs when collecting answers together replaces otherwise billable messages. The saving depends on the message category, customer-service window and applicable rates. Meta charges by delivered message where fees apply; service replies within the 24-hour customer-service window are free.

3. Marketing channels: from WhatsApp to a broader messaging mix

Chatarmin’s marketing product centres on WhatsApp. Its separate armincx product offers additional channels for customer support, but those should not be read as equivalent marketing capabilities in Chatarmin.

charles combines deep WhatsApp integration with more places to start a marketing conversation:

• WhatsApp: campaigns, customer journeys, AI conversations and native Forms.
• RCS in Apple Messages and Google Messages: rich messaging in the phone’s native messaging app, with SMS fallback where configured. RCS in Apple Messages is distinct from iMessage.
• Instagram Direct: conversational marketing journeys, including Click-to-Message Ads that lead into an AI-assisted conversation.
• Facebook Messenger: customer conversations and paid marketing messages through the Facebook Messenger Marketing API, now available in charles for eligible markets and accounts.

A retailer can use WhatsApp for retention and product selection, then connect social-ad interest to conversations on Instagram or Messenger. RCS offers another way to reach customers where the channel has suitable adoption.

Choose channels for your audience and markets: country-specific adoption, device and carrier support, consent requirements and messaging-window rules affect reach and permitted use. The channels do not all support the same outbound marketing features.

4. AI pricing: AI usage charges vs no added conversation fee

†Source: Chatarmin’s public customer-service pricing, which lists AI costs as custom for armincx. Charges and included usage depend on the individual offer and may change.

charles adds no per-conversation AI fee when AI answers customer questions. Platform and applicable messaging charges remain separate. Compare the full quote for your expected usage, including any separately purchased support product.

Which platform should you choose?

Both platforms support ecommerce marketing, AI customer support and inbox workflows. The decision is about the customer experiences you want to build, how your team works and which products and channels your quote covers.

Bring your own prompt, campaign or flow idea to a demo. We’ll describe it to charles cowork together and watch it build a draft in charles.