For a more interactive view of changes, click here
In our current world; bordering on financial chaos, with tariff wars, Brexit and hyperinflation rife, you can count on Groestlcoin to consistently produce innovation that strikes to take the power away from the few and into the many, even after a full five and a half years of solid development.
Here is what the team has already announced in the last 3 months since the last development update:

• Added to Ledger Nano X with Electrum-GRS. Offering state-of-the-art security.
• Testnet added to the Ledger Nano X!
• Added to Keepkey hardware wallet with Electrum-GRS.
• Testnet added to Keepkey hardware wallet!
• Added to the new multi-currency wallet, Cobo! With a 12,000 GRS giveaway!
• Groestlcoin Testnet added to ARCHOS Safe-T Mini hardware wallet!
• Groestlcoin started to be accepted at Mind Research & Development!
• Groestlcoin was added to Vertbase cryptocurrency exchange!
• Groestlcoin started to be accepted at Bitcoin-Meister, offering various merchandise.
• Added to the Decentralised Cryptocurrency exchange Neblidex!
• Groestlcoin started to be accepted at Drapis! Offering bee bread, raw honey, comb honey and more!
• BECH32 support added to Binance! Allowing users to withdraw their GRS directly to their Trust Wallet app or any other BECH32-supported app.
• Listed at DynX Decentralised Cryptocurrency Exchange
• Accepted at SpendBTC, offering various giftcards to be purchased with $GRS
• Added to Switchain, a non-custodial cryptocurrency exchange
• Supported at NOWNodes. An innovative platform offering customers unlimited access to public full nodes.
• Groestlcoin added to Melis lite wallet, designed for mobile devices to transact faster than ever.
• Testnet added to Melis lite wallet!
• Supported at NOWPayments, offering instant auto-conversion, easy-to-use API with no hidden fees
• Added to PayCentRUBYdebit card powered by China Union Pay.
• Added to PayCentSapphire debitcard. Powered by Union Pay International!
• Added to PayCent Solitaire debit card, powered by Mastercard!
• See these PayCent cards in action in Korea!
• Added to Digifinex Korea cryptocurrency exchange!
• Accepted at AcceptCryptoz! THE Crypto Directory to find places accepting Crypto near you.
• Added to Cryptwerk! An online directory and map with merchants accepting cryptocurrencies.
• Accepted at 247Bits! Selling cold storage cards and gift cards

What's Being Released Today?

Groestl Nodes

What am I?

Groestl Nodes aims to map out and compare the status of the Groestlcoin mainnet and testnet networks. Even though these networks share the same protocol, there is currently no way to directly compare these coins in a single location. These statistics are essential to evaluate the relative health of both networks.

Features

• Shows Onion (Tor) nodes
• Shows IPv6 nodes
• Supports both main net and test net
• Node Checker – Check the status of a remote node
• Ability to download node data by CSV, JSON or TXT format
• Ability to download unique address data by CSV, JSON or TXT format
• Shows last seen time for each node
• Shows uptime for each node

Source - Website

Groestlcoin Transaction Tool

What am I?

This is a tool for creating unsigned raw Groestlcoin transactions and also to verify existing transactions by entering in the transaction hex and converting this to a human-readable format to verify that a transaction is correct before it is signed.

Features

• Create Raw Unsigned Groestlcoin transactions
• Coin Control
• Generates a QR code for the transaction
• Verifying Transactions
• Compatible with most Groestlcoin wallets including but not restricted to Groestlcoin Core and Electrum-GRS
• Estimates final signed transaction size
• Taking a raw transaction format and shows its Transaction ID, Transaction Inputs and Outputs

Source – Download

Groestlcoin AGCore

What am I?

AGCore is an Android app designed to make it easier to run a Groestlcoin Core node on always-on Android appliances such as set-top boxes, Android TVs and repurposed tablets/phones. If you are a non-technical user of Groestlcoin and want an Android app that makes it easy to run a Groestlcoin Core node by acting as a wrapper, then AG Core is the right choice for you.

What's Changed?

• Update to Groestlcoin Core 2.17.2
• Switched to native builds via NDK for Groestlcoin Core resulting in a smaller footprint.
• Added embedded tor
• Added tor pairing support
• TOR upgrade bug fixes
• Improved blockchain Sync progress using getblockchaininfo verificationprogress
• Improved package download progress bar
• Added support for external storage access > Android M
• Added support for Android Oreo, including new notification mechanism
• Added support for Bitcoind RPC cookie
• Change minimum target to Android 21
• Add support for some arm64 android devices
• Various security and bug fixes

Source - Download

Groestlcoin Electrum

What's Changed?

• Bump Fee (RBF) improvements – Implemented a new fee-bump strategy that can add new inputs, so now any transaction can be fee-bumped. The old strategy was to decrease the value of outputs (starting with change). We will now try the new strategy first, and only use the old as a fallback.
• Coin Choser improvements
  • More likely to construct transactions without change (where possible)
  • Less likely to construct transactions with really small change
  • Only spend negative effective value coins when beneficial for privacy
• Fix long-standing bug that broke wallets with >65k addresses
• Windows binaries: Now build the PyInstaller bootloader ourselves, as this seems to reduce anti-virus false positives
• Fix performance regression for large wallets
• Fix high-DPI issues related to text fields
• Trezor – Allow bypassing 'too old firmware' error
• Trezor – Use only the Bridge to scan devices if it is available
• Hardware wallets – On Win10-1903, some hardware devices with U2F functionality can only be detected with Administrator privileges. A workaround is to run as Admin, or for Trezor to install the Bridge.
• The AppImage Linux x86_64 binary and the Windows setup.exe are now built reproducibly.
• Fix watch-only wallets that could not bump fee in some scenarios
• Faster transaction signing for segwit inputs or really large transactions.

Android Electrum-Specific

• Fix BIP70 payment requests could not be paid
• Allow copy-pasting partial transactions from/to clipboard

OSX – Windows – Windows Standalone – Windows Portable – Linux - Android
Server Source – Server Installer Source – Client Source – Icon Source – Locale Source

Android Wallet – Including Android Wallet Testnet

What am I?

Android Wallet is a BIP-0032 compatible hierarchial deterministic Groestlcoin Wallet, allowing you to send and receive Groestlcoin via QR codes and URI links.

V7.11.1 Changes

• SegWit Support:
  • Send to native SegWit Bech32 addresses.
  • Receive to and spend from native segwit (Bech32) addresses
  • Existing wallets without a spending PIN are updated to use native segwit (Bech32) addresses
  • Existing wallets with spending PIN can be upgraded by changing or removing the PIN
• Add 3 more block explorers – Groestlsight, Blockbook, Blockchair
• New alert for users with insecure Bluetooth
• Use much less memory when displaying QR codes
• Add a warning dialog regarding a relatively high fee
• Clarify message when fetching/validating the payment request fails
• Backing up makes use of the SAF. For most users, this means encrypted backups are stored on Google Drive, but other cloud storage providers can also be used
• Fix certain payments not showing up until they become confirmed
• Always show fiat amounts directly below Groestlcoin value in the payment history
• The QR Code scanner now supports portrait orientation
• Run circular reveal transition if QR code scanner is started via lower action bar
• Update build to Gradle 3.3+ and Android Plugin for Gradle 2.3.3
• Use Room Persistence Library for access to the address book database
• Adds a network security configuration
• Migrate support libraries and architecture components to AndroidX
• Add another backup reminder
• Remove ability to restore backups from list of Base58-encoded private keys
• The app now requires Android 5.0 (Lollipop) or higher
• Option to request coins to a legacy address (Sender may not support BECH32)
• Double the capacity of the block store
• Make more room for transactions list by scrolling away the balance panel
• Based on GroestlcoinJ 0.15.2
• Disconnects from incompatible peers much faster
• Fix crash on Pixel 2 devices
• Fix crash with hyperinflated fiat currencies
• Fix rarely occurring crash when backing up the wallet
• Fix crashes when opening dialogs at the wrong time
• Fix crash when archiving a wallet backup on certain devices
• Updated checkpoints
• Update Electrum-GRS list with server fingerprints
• Removed unused code and features. Show splash icon whilst the app is loading
• Remove labs feature – Look up wallet names from the DNS
• The FOREGROUND_SERVICE permission is now requested (Android 9 Pie +)
• Support notification channels and adaptive launcher icons (Android 8+)
• Fix app shortcuts (Android 7.1)
• Multiple 'coin received' notifications are now bundled into a notification group (Android 7+)

Groestlcoin Java Library Source – Source - Download – Testnet Download

Groestlwallet

What am I?

Groestlwallet is designed to protect you from malware, browser security holes, even physical theft. With AES hardware encryption, app sandboxing, keychain and code signatures, groestlwallet represents a significant security advance over web and desktop wallets, and other mobile platforms.
Simplicity is groestlwallet's core design principle. Because groestlwallet is "deterministic", your balance and entire transaction history can be restored from just your recovery phrase.

iOS 0.7.3 Changes

• Fix BIP70 payments
• Updated QR Scanner
• Lowered spending limit
• Updated DNS Seeds
• Updated checkpoints
• Fixed URL Scheme
• Fixed GRS Name in mailing
• Fixed crash upon starting in some scenarios

Android v89 Changes

• Use default fee
• Republished on Google Play by removing send_sms permissions
• Lowered spending limit
• Updated to API 28
• Use https instead of http for GRS price
• Updated DNS Seeds
• Updated Checkpoints

iOS Source – Android Source - Android Download – iOS Download

Groestlcoinomi Released

What am I?

Groestlcoinomi is a lightweight thin-client Groestlcoin wallet based on a client-server protocol.

Groestlcoinomi v1.1 Desktop Changes

• Rebranded to Groestlcoinomi
• Updated to use ElectrumX 1.4 protocol

Groestlcoinomi Android v1.6 Changes

• Updated to use ElectrumX 1.4 protocol
• Removed unused native code
• Removed local groestlcoinj library (Included from Mavenlocal)
• Updated Gradle

Groestlcoin Java Library Source – Android Source
Android Download – Windows Download – Mac OS Download – Linux Download

Groestlcoin BIP39 Tool

What's Changed?

• Update Samourai Path on BIP32 tab
• Fix BIP38 Support for mainnet and testnet

Source - Download