Ethereum Gas Bar with Alert displays real-time Ethereum gas prices in the Mac menu bar, helping users time blockchain transactions for optimal cost efficiency. The app shows three gas price categories (low, average, and high) sourced from Etherscan’s API, along with current ETH price in USD and BTC.
The customizable alert system enables users to set gas price thresholds and receive notifications when fees drop below target levels. This feature allows transaction queuing for optimal execution windows rather than constant manual price checking. The menu bar display supports customization with prefix and suffix options, including emoji support.
Resource usage remains minimal: approximately 1% CPU and 35MB memory. Data updates occur frequently enough for practical use without excessive system impact.
The developer (Jiho Ryu at Academica.kr) maintains the app actively. Version 1.03, released in August 2025, includes API updates that resolved previous data fetching issues.
System requirements: macOS 10.13 or later. Download size is 34.4 MB.
Pricing: Free with core functionality. Optional in-app purchases ($4.99, $9.99, $99.99 tiers) function as voluntary developer support rather than feature locks.
Limitations: The app serves a narrow use case: active Ethereum transactors. Users who only hold cryptocurrency without making transactions will find limited utility. The app focuses solely on Ethereum gas prices and does not provide comprehensive portfolio tracking or multi-chain support.
Alternatives: Blocknative Gas Estimator provides browser-based gas estimation. Etherscan directly offers gas price information via their website. For broader cryptocurrency monitoring, apps like Crypto Pro or CoinStats provide multi-asset tracking.
The app states it collects no user data according to the App Store privacy listing.
Suitable for users who interact regularly with Ethereum (DeFi protocols, NFT minting, asset transfers) and want to optimize transaction costs through timing rather than paying premium gas fees.
