Finance

Offline-first, privacy-focused options payoff and volatility surface simulator. Explore payoff diagrams for any option combination interactively using the Softplus pricing model (a quick and dirty approximation that avoids Black-Scholes rigidity). Markets are uncertain — no model is the ultimate truth. That’s why this app is built for play and intuition: tweak the volatility surface and instantly see how shocks, skew changes, term-structure shifts, or full volatility regime changes affect your strategy. Features: - Financial modeling of option prices linked to an interactive volatility surface. - Navigate and stress-test strategies across realistic market volatility scenarios. - No tracking, no data ever leaves your machine.

Sossoldi is a free and open source wealth management / personal finance / Net Worth tracking app, made by Mr. RIP community members, with Flutter. This app is for you if you want to... - track your net worth - track your expenses to better understand where they are spending their money - keep track of your investments

Simple currency conversion. * Currency rates from Floatrates * 150 international currencies * Currency rates updated daily * Last rate update retained for use offline * Multiple translations, except all currency names * App widget to display selected currency

Going on a road trip? Worried about all the maths you gotta do to find out "who owes whom and how much" after the trip? Well, worry not! Add all your expenses to this app and let it do the calculations for you.

Status combines pseudonymous privacy-focused messenger and secure crypto wallet into one powerful communication tool. Chat with friends and growing communities. Buy, store, and exchange digital assets. Status is your Ethereum operating system. SECURE ETHEREUM WALLET The Status crypto wallet allows you to securely send, store, and exchange Ethereum assets such as ETH, SNT, stable coins such as DAI, as well as collectibles. Confidently take control of your cryptocurrency and digital assets with our multichain Ethereum wallet app, supporting Ethereum Mainnet, Base, Arbitrum, and Optimism. The Status blockchain wallet currently only supports ETH, ERC-20, ERC-721, and ERC-1155 assets; it does not support Bitcoin. PRIVATE MESSENGER Send private 1:1 and private group chats without anyone snooping on your communications. Status is a messenger app that eliminates centralised message relays for greater privacy and secure messaging. All messages are encrypted with end-to-end encryption. Additionally, no message exposes who the author or the intended recipient is, so nobody, not even Status, knows who is talking to who or what was said. EARN WITH DEFI Put your crypto to work with the latest decentralised finance apps and decentralised exchanges (DEX) such as Maker, Aave, Uniswap, Synthetix, PoolTogether, Zerion, Kyber, and more. CONNECT WITH YOUR COMMUNITY Explore, connect, and chat with your favourite communities and friends. Whether it is a small group of friends, an artist collective, crypto traders, or the next big organization - text and communicate with Status communities. PRIVATE ACCOUNT CREATION Stay private with pseudo-anonymous account creation. When creating your free account, you will NEVER have to enter a phone number, email address, or bank account. Your wallet private keys are locally generated and securely stored to ensure only you have access to your funds and financial transactions.

Keep and eye on your subscriptions and contracts. Let you remind of cancelation periods. Add subscriptions and details like costs, billing interval, contract durations and cancelation period Show all subscriptions and their costs Show days until next billing Switch subscription cost overview to daily, weekly, monthly and yearly Modify and delete subscriptions Search for specific subscriptions Sort subscriptions by name, costs, etc. Optional reminder for reaching cancelation period of subscriptions

An open source mobile application to help you easily manage multiple wallets and record transactions. From expenses like Groceries, Online Shopping, Subscriptions, for your savings and income, and even wallet transfers... you can list them on Sushi. Manage your personal finances with Sushi.

The simplest way to accept Bitcoin payments in your Business, restaurant, bar, and others. So simple to use: 1. Type the amount in your local currency. 2. Client scan the QR or tap a Lightning NFC Card. 3. Paid. Maximum compatibility: Through the same screen, receive in: Bitcoin On-chain Lightning Lightning-NFC cards Non-custodial: After clients have paid through Onchain and/or Lightning, the Lightning-BTC will be converted to Onchain-BTC (free of charge) and will all be sent to your private wallet (free of charge), as configured in your account. You charge 100$, you receive 100$.

The GNU Taler merchant POS (point of sale) terminal allows sellers to * process customers’ orders by adding or removing products * calculate the amount owed by the customer * let the customer make a Taler payment via QR code or NFC

This app is a wallet for GNU Taler. GNU Taler is a privacy-preserving payment system. Customers can stay anonymous, but merchants can not hide their income through payments with GNU Taler. This helps to avoid tax evasion and money laundering. The primary use case of GNU Taler is payments; it is not meant as a store of value. Payments are always backed by an existing currency. Payment are made after exchanging existing money into electronic money with the help of an Exchange service, that is, a payment service provider for Taler. When making a payment, customers only need a charged wallet. A merchant can accept payments without making their customers register on the merchant's Website. GNU Taler is immune against many types of fraud, such as phishing of credit card information or chargeback fraud. In case of loss or theft, only the limited amount of money left in the wallet might be gone.

Dead simple tip calculator that computes tip based on the subtotal, pre-tax. It's also my first app, so some things are missing that I don't know how to implement just yet.

TkTon Wallet is a wallet for TON (The Open Network) blockchain. Main features: * Multiple wallets support * Possibility to check any address on network * Possibility to check transactions of any address on network * Material Design * Uses lite-client with Merkle proofs (without HTTP REST proxy server)

Especially for managing shared expenses. Tricky Tripper is an offline-compatible utility for managing travel expenses. It is especially intended for holidays with shared expenses, e.g. you go on a trip with your friends and from time to time one companion pays for all travelers. In such a situation Tricky Tripper splits the costs among the companions as you want it. The application calculates all debts among the travelers and offers means to get even, during or after the trip. Features: * Even or individual splitting of costs among travelers. * Debt protocol * Function to settle debts * It's offline-compatible. * Report export (Dropbox, Evernote, Mail, SDCard)

Checks for product price history using the CamelCamelCamel website. You can also set a notification for when the price gets lower. You just have to share a product from the Amazon app, and choose Triple Camel as the sharing app from the list.

Client for the Tryton ERP system. It lets you access and edit your enterprise information (accounting, invoice, production, stocks, and more) from your device. It is a generic client like the gtk client, and should be compatible with all Tryton modules. It also contains an SVG parser for Android. Use demo as user and password with the default configuration to connect to Tryton demo server.

With this app you can present and scan QR code tickets (and a bit more) for UniNow courses. It can be used for any digital booking system (DBS) hosted by them, e.g. for the ZHS München. This app is NOT affiliated with UniNow GmbH, the provider/developer of the booking system. Features: Multiple sites and accounts QR Code Check in (presenting and scanning) List courses/appointments Really fast, no ads, no trackers Simple and small (~4MB) Completely offline (authenticate once)

Unstoppable wallet is purposely built as a decentralized management tool for cryptocurrencies. It is engineered to serve privacy-conscious individuals looking to manage and invest in Bitcoin, Ethereum and other cryptocurrencies in a sovereign and professional manner. Unstoppable is built with the following in mind: - Capital Should Be Free >> It’s built to provide users with genuinely independent control over their capital. - Capital Should Be Borderless >> It works outside the traditional finance layer and acts as a Swiss knife to the world of decentralized finances (DeFi). - Capital Should Be Private >> It doesn’t leak private data, it has no means to track users, and takes extra measures to ensure privacy on multiple layers. If the above rhymes well with you then Unstoppable is for you! And we are here to focus on your unique needs and serve you in the best possible manner. WALLET FEATURES: - Non-Custodial Multi-wallet >> Manage any number of cryptocurrencies across multiple portfolio-style wallets in a non-custodial manner. This wallet is like your own bank where you are the only client and the only one in charge. It’s designed to keep assets secure and easy to restore even if the phone is stolen and tampered with. - Investment Oriented Wallet >> Unstoppable brings unmatched cryptocurrency market analytics to your device: advanced sorting, curated categorization, extensive search filtering, and event-based alerting features. - Universal Wallet >> It supports all mainstream blockchains and is built in a standard compliant manner enabling users to use just one wallet app for everything crypto. - A Bitcoin Wallet >> The wallet packs some of the most advanced Bitcoin features available: SPV enabled, BIP 44/49/84/86/69 compliant, Bitcoin timelocks, custom transaction fees, and more. - A DeFi Wallet >> Full support for decentralized token swaps on Ethereum, Binance Smart Chain, Polygon, Avalanche, Solana, and more. Also, the ability to interact with any smart contract-powered service on the blockchain via the WalletConnect protocol. - Ethereum Wallet >> Full support for Ethereum blockchain, its growing ecosystem of tokens (ERC20, NFT tokens, etc.), and other decentralized services such as ENS (Ethereum Name Service). - Ethereum L2 Wallet >> Artbitrum, Optimism, Polygon support. - Avalanche Wallet >> Full support for Avalanche C-Chain blockchain. - Binance Wallet >> Full support for original Binance Chain (incl. BEP2) and Binance Smart Chain. - Crypto Academy >> The app includes two courses meant to onboard newcomers into the world of cryptocurrencies and the DeFi ecosystem in an easy-to-digest manner covering essential aspects of cryptocurrency security, storage, privacy, transacting, and exchanging. - Wallet for Privacy Coins >> Fully supports major privacy coins (ZCash, DASH) in an SPV manner. One of the very few wallets capable of supporting fully shielded Zcash transactions as well as the ability to privatize Bitcoin transactions. - Decentralized Wallet >> Designed to work with most major blockchains in a decentralized manner where an app doesn't depend on some server of a wallet provider to send/receive transactions but interacts with blockchain networks directly. - Privacy Focused >> Designed to allow for privacy even in the most privacy-breaching scenarios. There are no user accounts keeping your records, no identity checks that risk exposing your financials to the world, and no interaction with traditional finance layers. The app is partially TOR enabled and VPN support coming soon. - Fully Open Source >> The most transparent wallet application built to date. The entire 4-year production process of the app is openly accessible online along with 100% of its code for anyone to evaluate or reuse in other projects. Verified and audited by third parties. Be Unstoppable!

Calculate VAT for any country in the world

Valet is a fork of the original SBW wallet, modified to support synthetic "stable sats" based on hosted channels. You can read more about stable sats on standardsats.github.io. In addition to this feature, the wallet retains all the original capabilities of SBW, including: Non-custodial Bitcoin storage A fully-featured Lightning node within your mobile device

activeTAN is the secure and modern TAN process for your online banking. With the activeTAN app you can approve transactions comfortably on your smartphone. The fast data transfer via QR code enables an easy two-factor authentication that works everywhere at all times.

Veil - Privacy without compromise Veil is creating an encrypted equivalent of the cash economy, where privacy is the most convenient choice. Learn more, download the wallet, and join the journey. PRIVACY BY DEFAULT Privacy should not be optional. Veil aims to make full-time privacy the most convenient choice. INCENTIVIZED PARTICIPATION By holding Veil, our users not only contribute to broadly distributed network security, but earn staking rewards — anonymously! FAIR LAUNCH No ICO. No premine. Veil's blockchain is secured via Proof-of-Work and Proof-of-Stake in order to combine both security and fair distribution. USER-FOCUSED In a digital cash society, participation extends to everybody, not just those who read user manuals. Veil aims to be one of the most user-friendly wallets in crypto. SELF-SUSTAINING The Veil network includes built-in self-funding for project development, operations, customer support, and ongoing research and development. FUTURE-SAFE Veil will continue to push the limits of cryptography and blockchain technology through Veil Labs, an entity dedicated to R&D and partnerships with leading academic institutions. Project website: https://veil-project.com Source code: https://github.com/steel97/veil_wallet Discord https://discord.veil-project.com

If you receive vouchers (from, say, sodexo) which have a fixed value and you need to pay a certain amount, you may wonder how many vouchers you have to spend and how much tip you may be giving with an additional voucher. Features: * Enter price you need to pay * Select the maximum number of vouchers you carry * It shows how much you still have to pay * Or how much extra you'd give with an additional voucher

Voucher Vault helps you keep track of all your vouchers, gift cards and loyalty cards. Features include: * Supports several types of barcodes, including plain text * Keep track of expiry dates * Keep track of gift card balances * Assign each voucher a different color