🧮 Solo dev building InkCalc — macOS only.
What it does:
1. Type as a regular calculator.
2. Each line stays as a long-term note.
3. One keystroke sends the context to an AI (USD, units, ballpark).
Calc → Note → AI on a single rail.
In App Store review.
#buildinpublic #indiedev #macOS
🧮 Hex and binary, computed inline like a notepad.
0xff & 0x0f → 15
1 << 8 → 256
255 in hex → 0xff
Tweak color codes or check bit flags without bouncing between calculator apps.
Free on the App Store — search "InkCalc"
#indiedev#iOS#macOS#buildinpublic
🧮 AI in your calc notes, one keystroke away.
Cmd+Shift+I → plain text to a formula
Cmd+Shift+M → summarize the math
Cmd+Shift+J → a question into a sum
Plain words → formula → 1-line summary. On-device by default.
Free on the App Store — search "InkCalc"
#indiedev#iOS #macOS #buildinpublic
🧮 I built InkCalc for moments like "wait, how much is that in USD?"
"Dinner 9800 × 4 + drinks 1300 × 4 + tip 15 %"
→ (9800 + 1300) * 4 * 1.15 ≈ 51060 JPY ≈ 327 USD
The final FX step is an AI shortcut — live rate, one keystroke.
Solo dev / In App Store review.
#buildinpublic #indiedev #macOS
🧮 Call earlier results by name in your next formula.
ans → last result
sum above → sum of values above
avg above → average above
Stack up an estimate without retyping numbers — longer notes pay off more.
Free on the Mac App Store — search "InkCalc"
#indiedev#macOS #buildinpublic
🧮 単位は書いたまま変換。換算サイトはもう開かない。
5 km in miles → 3.107 mi
100 C in F → 212 F
2 GB to MB → 2,000 MB
長さ・質量・温度・データ量に対応。レシピや海外スペック表を読むときに地味に効きます。
Mac App Store で「InkCalc」を検索(無料)
#個人開発#buildinpublic #macOS
🧮 Mix dollars, euros and yen, then total them as-is.
$200 → 200 USD
1500 JPY as USD → ~ 9.8 USD
$50 + 30 EUR in JPY → ~ 12,000 JPY
Live rates on launch. Keep a formula for "what did that subscription actually cost?"
Free on the Mac App Store — search "InkCalc"
#indiedev #macOS #buildinpublic
🧮 Solo dev. InkCalc shines when you're budgeting a trip.
"Tokyo → Osaka 14000 round trip × 4 + hotel 9800 × 4 + bento 1100 × 4"
→ 14000*2*4 + 9800*4 + 1100*4
The formula stays as a note, so you can re-check it against receipts later.
In App Store review.
#buildinpublic #indiedev #macOS
🧮 No more counting days on your fingers.
2025-04-25 + 7 days → 2025-05-02
2025-04-25 + 90 days → 2025-07-24
tomorrow - today → 1 day
Renewals, payment due dates, trial periods — dates are just formulas here.
Free on the Mac App Store — search "InkCalc"
#indiedev#macOS #buildinpublic
🧮 Stop doing "plus tax" and "20% off" in your head.
1000 + 10% → 1100
1000 - 20% → 800
20% of 250 → 50
Tax, sale prices, tips — written the way you say them, and the formula stays in your note.
Free on the Mac App Store — search "InkCalc"
#indiedev#macOS#buildinpublic
🧮 Solo dev building InkCalc — a macOS app for the calculations that are too messy for a calc app but too small for a spreadsheet.
Example: "Beef bowl 1280 + Salad 480 + Drink 198 × 3"
→ 1280 + 480 + 198 * 3
The expression itself stays as a long-term note.
In App Store review.
#buildinpublic #indiedev #macOS