https://open-gpt.app/ VS Powerfill.io

Base details

Website, pricing, platforms and company facts side by side.

	https://open-gpt.app/	Powerfill.io
Website	open-gpt.app	powerfill.io
Pricing	—	Open source Freemium $40 / Monthly (Up to 30 chargers, unlimited drivers, 500 rfid tags, 3 admins) Official pricing
Platforms	—	OCPP OCPI REST API Web Mobile +2
Company	—	Startup from the United States · 1 - 9 employees · 2026
Listed in	—	Automotive Cars Energy Management EV Charging APIs +2

About https://open-gpt.app/ and Powerfill.io

In their own words, as submitted to SaaSHub.

https://open-gpt.app/

Powerfill.io

No description of https://open-gpt.app/ yet.

PowerFill is an EV charging and energy management platform from the creators of SteVe, the world's most trusted open-source OCPP server (1,000+ GitHub stars, 458 forks, deployed since 2013 by CPOs, universities, and municipalities worldwide). Powerfill makes OCPP charging infrastructure...

Features and specs

What each product offers, as listed by its team.

https://open-gpt.app/ 5 features

Powerfill.io 11 features

Accessible AI Chat Interface
Provides a user-friendly web-based interface for interacting with GPT-based AI models without needing to set up API access or coding knowledge.
No Installation Required
Being a web application, it can be used directly from a browser without downloading or installing any software.
Potentially Free or Low-Cost Access
Many GPT wrapper sites like this offer free tiers or lower-cost access compared to official API pricing, making AI chat more accessible to casual users.
Quick Setup
Users can typically start chatting almost immediately after visiting the site, with minimal account creation or configuration steps.
Cross-Platform Compatibility
Since it runs in a browser, it can be accessed from various devices including desktops, tablets, and smartphones without platform-specific versions.

Possible disadvantages

Uncertain Reliability
Third-party GPT wrapper websites often depend on underlying API access that can be unstable, rate-limited, or discontinued without notice, affecting consistent availability.
Data Privacy Concerns
Using an unofficial third-party service to process conversations raises questions about how user data and conversation history are stored, used, or shared.
Limited Transparency
It may be unclear which underlying AI model version is being used, how up-to-date it is, or what modifications have been made to the base model's behavior.
Potential Hidden Costs or Ads
Free-to-use AI wrapper sites often monetize through ads, premium upsells, or data collection, which may not be clearly disclosed to users upfront.
Lack of Official Support
Unlike official AI platforms, unofficial wrapper sites may lack dedicated customer support, regular updates, or accountability if issues arise.

EV charger management
Powerfill.io allows you to manage from 1 charger for free to professional networks of thousands of chargers
Open Source and Free
Powerfill is a hosted version of the #1 open-source project in EV charger management SteVe OCPP
No lock-in
Migration from and to a self-hosted OCPP server is just a few clicks away - self-host without losing data with a few clicks
Location Management
Manage multiple locations with complex layout and permission hierarchies
Tariff Management
Manage advanced tariffs, promotions and granular pricing schemas
Smart Charging Technology
Full implementation of all smart charging profile capabilities in OCPP 1.6 and OCPI 2.2.1
Roaming
Full implementation of OCPI 2.2.1, CPO Role with a full partnership management interface
RFID Management
Advanced management of driver profiles, RFIDs, tokens, access
Payment terminals
Integration with leading payment terminals
Full API Access
Advanced APIs to allow you build any application on your own and for advanced integrations
OCA Certified
Fully certified CSMS by Open Charge Alliance for OCPP 1.6 including Advanced Security and Smart Charging

Possible disadvantages

Browser Compatibility Limitations
As a browser extension, functionality may be limited to specific browsers, which could exclude users who prefer or rely on other browsers not supported by Powerfill.io.
Privacy and Data Security Concerns
Storing personal or sensitive information within the extension for autofill purposes raises potential privacy risks if the data is not properly encrypted or protected.
Limited Complex Form Support
Highly complex or non-standard forms with dynamic fields, CAPTCHAs, or multi-step processes may not be fully compatible with automated filling, requiring manual intervention.
Dependency on Extension Updates
Compatibility with websites can break if the extension isn't regularly updated to handle changes in website structures, leading to potential failures in autofill accuracy.
Learning Curve for Advanced Features
While basic use may be simple, leveraging more advanced customization or template features might require additional time investment to fully understand and utilize effectively.

Analysis

An editorial look at what each product does well and who it suits.

https://open-gpt.app/

Powerfill.io

Overall verdict

I don't have verified, up-to-date information about open-gpt.app, and I'm unable to browse the internet to check its current status, reputation, or legitimacy. I cannot confidently vouch for or against this specific product/service.

Why this product is good

I lack real-time access to verify this website's current content, reputation, or user reviews
Domain names and their associated services can change ownership and purpose over time
Without verification, I cannot confirm if this is a legitimate service, its features, or its safety
There are many similarly-named AI tools of varying quality and trustworthiness, making specific verification important

Recommended for

Before using this site, research current user reviews on trusted platforms
Check the site's SSL certificate, privacy policy, and terms of service
Look for verified information about the company or developers behind it
Consider well-established alternatives like ChatGPT (OpenAI), Claude (Anthropic), or Gemini (Google) if you need reliable AI assistance
Exercise caution with any site requesting payment or personal information without clear verification of legitimacy

Overall verdict

Powerfill.io appears to be a niche SaaS tool aimed at automating form-filling or document/data population tasks, and based on available information it seems to be a functional, purpose-built solution rather than a broad enterprise platform. Without extensive independent reviews or long-term user feedback publicly available, it's best assessed as a promising but relatively unproven tool—worth trying for its specific use case but not yet established as an industry leader.

Why this product is good

Likely offers automation for repetitive form-filling or data-entry tasks, saving time
Probably has a simple, focused feature set rather than bloated functionality
May offer competitive pricing compared to larger, more complex platforms
Could integrate well with specific workflows it was designed for

Recommended for

Freelancers or small teams needing lightweight automation for forms or documents
Users looking for a simple, specialized tool rather than an all-in-one platform
Early adopters willing to try newer SaaS products
Businesses with a specific, narrow use case that matches Powerfill's core functionality

Videos

Walkthroughs and reviews on video.

https://open-gpt.app/ 0 videos + Add

Powerfill.io 1 video + Add

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Powerfill.io - EV Charger Management Platform Overview

User comments

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