Saturday, March 21, 2026
Friday, March 20, 2026
New top story on Hacker News: Show HN: Red Grid Link – peer-to-peer team tracking over Bluetooth, no servers
Show HN: Red Grid Link – peer-to-peer team tracking over Bluetooth, no servers
8 by redgridtactical | 3 comments on Hacker News.
I go on a lot of backcountry trips where I barely get cell service. If my group splits, nobody knows knows where anyone is until you regroup at camp or at your destination. You can buy Garmin radios or try to set up an ATAK, but ATAK is Android-only and assumes you have a TAK Server running somewhere to make use of all of the functionality. Cool tools themselves, but expensive to set up correctly. I just wanted two iPhones to share their location directly over Bluetooth when cell coverage was lacking. Red Grid Link does that. Start a session, and anyone nearby running the app shows up on your offline map. When they walk out of range their marker stays as a "ghost" that slowly fades. The hard part was making sync reliable over BLE. The connections drop all the time. Someone turns a corner, walks behind a vehicle, whatever. I built a CRDT sync layer (LWW Register + G-Counter) so there's never merge conflicts. Each update is just under 200 bytes (from what I have tested so far). When a user/teammate disappears the app does exponential backoff from 2 to 30 seconds before giving up and marking them as a ghost. Everything is encrypted (AES-256-GCM, ECDH P-256 key exchange per peer pair). Sessions can require a PIN or QR code to join. It also offers offline topo maps with MGRS grid coordinates, same system as in my other app, Red Grid MGRS. The app is free, and I'm looking for some honest feedback from other real-world users. Let me know if you have any questions!
8 by redgridtactical | 3 comments on Hacker News.
I go on a lot of backcountry trips where I barely get cell service. If my group splits, nobody knows knows where anyone is until you regroup at camp or at your destination. You can buy Garmin radios or try to set up an ATAK, but ATAK is Android-only and assumes you have a TAK Server running somewhere to make use of all of the functionality. Cool tools themselves, but expensive to set up correctly. I just wanted two iPhones to share their location directly over Bluetooth when cell coverage was lacking. Red Grid Link does that. Start a session, and anyone nearby running the app shows up on your offline map. When they walk out of range their marker stays as a "ghost" that slowly fades. The hard part was making sync reliable over BLE. The connections drop all the time. Someone turns a corner, walks behind a vehicle, whatever. I built a CRDT sync layer (LWW Register + G-Counter) so there's never merge conflicts. Each update is just under 200 bytes (from what I have tested so far). When a user/teammate disappears the app does exponential backoff from 2 to 30 seconds before giving up and marking them as a ghost. Everything is encrypted (AES-256-GCM, ECDH P-256 key exchange per peer pair). Sessions can require a PIN or QR code to join. It also offers offline topo maps with MGRS grid coordinates, same system as in my other app, Red Grid MGRS. The app is free, and I'm looking for some honest feedback from other real-world users. Let me know if you have any questions!
Thursday, March 19, 2026
Wednesday, March 18, 2026
Tuesday, March 17, 2026
Monday, March 16, 2026
New top story on Hacker News: Show HN: Trackm, a personal finance web app
Show HN: Trackm, a personal finance web app
5 by iccananea | 0 comments on Hacker News.
I built this as a personal finance app that allows me to see how my recurring incomes and expenses will affect my network over the years. So trackm can show up to 4 years in the future and track when your accounts will go negative given you expenses and incomes. I've been dogfooding it for the past 10 days, fixing issues I find from my day-to-day use and now it's at a point where I'm comfortable sharing it with others. The app is free for 30 days, after which it goes into read-only mode. Paying the one-time license fee unlocks it forever.
5 by iccananea | 0 comments on Hacker News.
I built this as a personal finance app that allows me to see how my recurring incomes and expenses will affect my network over the years. So trackm can show up to 4 years in the future and track when your accounts will go negative given you expenses and incomes. I've been dogfooding it for the past 10 days, fixing issues I find from my day-to-day use and now it's at a point where I'm comfortable sharing it with others. The app is free for 30 days, after which it goes into read-only mode. Paying the one-time license fee unlocks it forever.
Sunday, March 15, 2026
Saturday, March 14, 2026
West Asia Crisis: पश्चिम एशिया की स्थिति पर रूस समेत कई देशों के संपर्क में भारत; BRICS के बीच भी चर्चा जारी
India Engages Multiple Countries Including Russia on West Asia Situation---West Asia Crisis: पश्चिम एशिया की स्थिति पर रूस समेत कई देशों के संपर्क में भारत; BRICS के बीच भी चर्चा जारी
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Friday, March 13, 2026
Thursday, March 12, 2026
Wednesday, March 11, 2026
Tuesday, March 10, 2026
Monday, March 9, 2026
Sunday, March 8, 2026
शक्ति की समृद्धि: आर्थिक आत्मनिर्भरता देगी नारी शक्ति को नई उड़ान, घर से बदलाव की शुरुआत
शक्ति की समृद्धि: आर्थिक आत्मनिर्भरता देगी नारी शक्ति को नई उड़ान, घर से बदलाव की शुरुआत shakti ki samridhi financial independence for women empowerment sip investment tips
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Saturday, March 7, 2026
Friday, March 6, 2026
Thursday, March 5, 2026
उपलब्धि: नीतिगत सुधारों से बदली सूरत, स्टार्टअप-निवेशकों के लिए पहली पसंद बना भारत; उद्योग जगत का भरोसा मजबूत
Achievement: Policy reforms have transformed India, making it first choice for startup-investors - उपलब्धि: नीतिगत सुधारों से बदली सूरत, स्टार्टअप-निवेशकों के लिए पहली पसंद बना भारत; उद्योग जगत का भरोसा मजबूत
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Wednesday, March 4, 2026
New top story on Hacker News: Show HN: A shell-native cd-compatible directory jumper using power-law frecency
Show HN: A shell-native cd-compatible directory jumper using power-law frecency
7 by jghub | 0 comments on Hacker News.
I have used this tool privately since 2011 to manage directory jumping. While it is conceptually similar to tools like z or zoxide, the underlying ranking model is different. It uses a power-law convolution with the time series of cd actions to calculate a history-aware "frecency" metric instead of the standard heuristic counters and multipliers. This approach moves away from point-estimates for recency. Most tools look only at the timestamp of the last visit, which can allow a "one-off" burst of activity to clobber long-term habits. By convolving a configurable history window (typically the last 1,000+ events), the score balances consistent habits against recent flukes. On performance: Despite the O(N) complexity of calculating decay for 1,000+ events, query time is ~20-30ms (Real Time) in ksh/bash, which is well below the threshold of perceived lag. I intentionally chose a Logical Path (pwd -L) model. Preserving symlink names ensures that the "Name" remains the primary searchable key. Resolving to physical paths often strips away the very keyword the user intends to use for searching.
7 by jghub | 0 comments on Hacker News.
I have used this tool privately since 2011 to manage directory jumping. While it is conceptually similar to tools like z or zoxide, the underlying ranking model is different. It uses a power-law convolution with the time series of cd actions to calculate a history-aware "frecency" metric instead of the standard heuristic counters and multipliers. This approach moves away from point-estimates for recency. Most tools look only at the timestamp of the last visit, which can allow a "one-off" burst of activity to clobber long-term habits. By convolving a configurable history window (typically the last 1,000+ events), the score balances consistent habits against recent flukes. On performance: Despite the O(N) complexity of calculating decay for 1,000+ events, query time is ~20-30ms (Real Time) in ksh/bash, which is well below the threshold of perceived lag. I intentionally chose a Logical Path (pwd -L) model. Preserving symlink names ensures that the "Name" remains the primary searchable key. Resolving to physical paths often strips away the very keyword the user intends to use for searching.
Tuesday, March 3, 2026
Monday, March 2, 2026
मौसम विभाग का पूर्वानुमान: सावधान! तपिश भरे रहेंगे अगले 90 दिन, कई राज्यों में सामान्य से अधिक लू चलने के आसार
Weather forecast: Beware! next 90 days will be sweltering, with more severe heat waves expected in many states - मौसम विभाग का पूर्वानुमान: सावधान! तपिश भरे रहेंगे अगले 90 दिन, कई राज्यों में सामान्य से अधिक लू चलने के आसार
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