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Fizen VS https://open-gpt.app/

Compare Fizen VS https://open-gpt.app/ and see what are their differences

Fizen

Self-custody USDT super app: travel eSIM for Japan, Korea, China, USA and 150+ countries, QR pay like a local in Vietnam and the Philippines, crypto Visa card, send money to 64 countries, gift cards and tokenized US stocks. Backed by Tether.

Rating
0 reviews
Pricing
Freemium Free trial
Alternatives Is it good?
https://open-gpt.app/

Create ChatGPT Application in seconds

Rating
0 reviews
Alternatives Is it good?
VaultNow
All-in-one crypto finance platform for companies that run on stablecoins. Invoicing, payouts, treasury, budgets and AML — the whole money path in one non-custodial system. No banking friction, no spreadsheet reconciliation. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Base details

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

Fizen
https://open-gpt.app/
Website fizen.io open-gpt.app
Pricing
Freemium Free trial Official pricing
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Platforms
iOS Android Web
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Company Startup from Hong Kong · 10 - 19 employees · 2022 —
Listed in
Neobank Crypto Payments Crypto Card QR Code Payments Cryptocurrencies Cryptocurrency Wallets Payment Gateways Online Payments Crypto Fintech Payments Credit Card Payments +9
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About Fizen and https://open-gpt.app/

In their own words, as submitted to SaaSHub.

Fizen
https://open-gpt.app/

Fizen is a self-custody USDT wallet and super app: the stablecoins you already hold work like money everywhere, without a bank in the middle. One USDT balance you control; you hold your own keys, nobody can freeze or switch it off. Travel eSIM (150+ countries) - eSIM for Japan, South Korea,...

Read more about Fizen

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

Features and specs

What each product offers, as listed by its team.

Fizen 8 features
https://open-gpt.app/ 5 features
  • Travel eSIM
    eSIM for Japan, Korea, China, USA and 150+ countries from $4, unlimited plans, paid in USDT or card, free replacement for the whole trip
  • QR Pay
    Scan VietQR / Napas 247 / QR Ph codes and pay like a local in Vietnam and the Philippines with USDT, cashback on every payment
  • Crypto Visa card
    Visa card funded by USDT/USDC, MAS-licensed, Apple Pay and Google Pay, up to 100 cards per account
  • Send money
    USDT remittances and salary to 64 countries, payout to bank or Visa card, 30+ chains
  • Gift cards and top-ups
    5,000+ gift card brands in 178 countries plus airtime and mobile data top-up, paid in USDT
  • Tokenized US stocks
    100+ tokenized US stocks and ETFs (NVIDIA, Apple, Tesla, S&P 500) bought with USDT
  • Buy/Sell, Swap and Bridge
    P2P in 64 countries, Transak on-ramp, swap and cross-chain bridge on Solana, Ethereum, Base, BNB, including USDT to Tether Gold (XAUT)
  • Self-custody wallet
    One USDT balance, your own keys, nobody can freeze or switch it off. Backed by Tether
  • 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.

Analysis

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

Fizen
https://open-gpt.app/

Overall verdict

  • I don't have verified, up-to-date information about Fizen (fizen.io) to make a reliable assessment of its quality, safety, or legitimacy. Before using this service, especially if it involves financial transactions, crypto, or personal data, you should conduct independent research.

Why this product is good

  • I lack specific, verified data about this particular product/service
  • Details about lesser-known platforms can change frequently (ownership, features, reputation)
  • Cannot confirm licensing, security practices, or user satisfaction without current verified sources
  • Risk of providing inaccurate information about a service I don't have reliable data on

Recommended for

  • Users who should independently verify through official reviews, regulatory checks, and user forums before proceeding
  • Anyone considering this service should check for company registration, user reviews on trusted platforms, and recent news coverage
  • Those who need financial or security-sensitive services should consult verified, independent sources rather than relying on AI assessment alone

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

Videos

Walkthroughs and reviews on video.

Fizen 1 video + Add
https://open-gpt.app/ 0 videos + Add

Fizen Super App introduction: buy coffee with crypto, QR pay, card, eSIM

No https://open-gpt.app/ videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Fizen
https://open-gpt.app/
100% 100%
Online Payments
0% 0%
100% 100%
Credit Card Payments
0% 0%
100% 100%
Payment Gateways
0% 0%
100% 100%
Cryptocurrencies
0% 0%

Questions & Answers

As answered by people managing Fizen and https://open-gpt.app/.

What makes your product unique?

Fizen's answer

Fizen is the only self-custody app that turns one USDT balance into everything a traveler or remote worker needs: a travel eSIM for 150+ countries (Japan, Korea, China, USA, Europe) paid in USDT, QR payments like a local in Vietnam and the Philippines (VietQR, QR Ph), a MAS-licensed crypto Visa card, USDT remittances to 64 countries, gift cards in 178 countries, and tokenized US stocks. You hold your own keys the whole time. Fizen is backed by a strategic investment from Tether, the issuer of USDT, and its eSIM comes with a free replacement for the whole trip and a buy-back option for unused eSIMs.

Why should a person choose your product over its competitors?

Fizen's answer

Versus eSIM apps like Airalo or Holafly: Fizen lets you pay in USDT or card, gives a free 1:1 replacement for the whole trip if a Fizen-side eSIM fails, buys back unused eSIMs, and has a real support person you can actually reach. Versus crypto cards and exchanges like Crypto.com, Binance or Wirex: no staking, no custodial balance; your USDT stays in a wallet you control and you spend it by card or QR. Versus Wise, Revolut or Remitly: send USDT to 64 countries without a bank account on either end, with payout to bank or card. Versus MetaMask or Trust Wallet: a self-custody wallet that also lets you actually spend, with eSIM, QR pay, gift cards and stocks built in. And Fizen is backed by a strategic investment from Tether.

How would you describe the primary audience of your product?

Fizen's answer

Digital nomads and travelers heading to Japan, Korea, China, Thailand, Vietnam, the USA or Europe who want a travel eSIM without roaming fees and want to pay like a local by QR in Vietnam and the Philippines. Remote workers and freelancers paid in USDT on Upwork, Deel or Fiverr, especially in countries where PayPal and bank card rails are unreliable. Crypto holders who want to spend stablecoins on a Visa card or buy gift cards and tokenized US stocks without a P2P cash-out first. Media buyers and agencies who need up to 100 virtual Visa cards funded by USDT. Fizen is not available to US persons.

What's the story behind your product?

Fizen's answer

Fizen started in Southeast Asia, where millions of people get paid or hold savings in USDT but still had to run a P2P trade and a bank transfer just to buy dinner. The team built a self-custody wallet that could spend directly: first a crypto Visa card, then QR payments on the same VietQR and QR Ph rails locals use, then the everyday services travelers and remote workers actually need: travel eSIM, money transfer, gift cards, top-ups and tokenized US stocks, all from one USDT balance. Tether, the issuer of USDT, later made a strategic investment in Fizen to help bring stablecoin payments into everyday life across Asia and beyond.

Which are the primary technologies used for building your product?

Fizen's answer

Self-custody wallet infrastructure across 30+ blockchains, with USDT and USDC on Solana, Ethereum, Base and BNB Chain as the core balances. Payments run on the Visa network (MAS-licensed card programme in Singapore) with Apple Pay and Google Pay, and on local QR rails: VietQR and Napas 247 in Vietnam, QR Ph in the Philippines. On-ramp and off-ramp through P2P in 64 countries and Transak; card checkout via Stripe, Apple Pay and Google Pay for eSIM. Tokenized US stocks are Ondo tokenized assets on Ethereum. Native iOS and Android apps plus a web app at fizen.io.

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Alternatives to Fizen and https://open-gpt.app/

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