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Free Etsy profit calculator that includes fees, offsite ads, materials, packaging and your labor. Compare pricing scenarios and export PDF/CSV — no signup.
@5150_MadMan · X
Check out what I just built with Lovable!
Paste any MakerWorld URL → get instant cost breakdown: filament, print time, multicolor fees, and hardware. Free calculator. No signup needed.
@hirawattt · X
3D Print cost estimator -
对比LLM API价格，轻松计算月度使用成本。
u/ahmedk2002 · Reddit
I built a real-time LLM API pricing comparator — because I was tired of not knowing the actual cost difference between models I use LLMs daily at work and kept running into the same frustration: provider pricing pages give you raw numbers per million tokens, but no way to understand what that actually means for your specific use case. Is GPT-4o really that much more expensive than Claude Sonnet for 10k requests per day? What about DeepSeek vs Gemini Flash for high-volume summarization? I
对比450+个LLM API定价方案，计算实际月度成本，支持缓存和批处理定价。
u/Greywolff06 · Reddit
I built LLMPrice — a free calculator for comparing LLM API costs across 450+ pricing routes I kept running into the same problem when comparing LLM APIs: the headline token price doesn't always tell you what your actual workload will cost. Caching, batch pricing, reasoning tokens, retries, different endpoints, and OpenRouter routes can change the result quite a bit. So I built LLMPrice.com. You enter your workload once — requests, input/output tokens, caching, retries, etc. — and it com
BizCalc：32+个免费商业计算器，用于计算利润率、损益平衡和自雇税费。
@BizCalcLab · X
SaaS定价建模和代币成本计算,支持30+种货币的利润分析。
@HelloCalcaas · X
用于比较230多个AI模型API成本的计算器。
ahmed_hassan7 · HN
CostPerPrompt – Live AI API pricing and real-workload cost calculators
用免费计算器估算抵押贷款、汽车贷款和个人贷款的月付款——无需注册
@itskdubs_ · X
将照片转换为十字绣图案和 DMC 线号及 PDF。
ooklwq · V2EX
我妈要把我家猫绣成十字绣，找不到合适的图纸工具，于是自己写了一个 起因：我妈绣了十几年十字绣，拿着我家猫的照片问我"这玩意能不能变成图纸"。找了一圈现成工具，不是要注册就是要订阅，导出还带水印，于是一怒之下自己撸了一个 → https://crossstitchpatternmaker.app 先说原理，免得显得像个套壳：照片降采样到网格 → 用 CIELAB 空间的 Delta-E 色距匹配到 454 个真实 DMC 线号 → 输出带符号和绞数估算的 PDF 。 技术栈：TanStack Start + Cloudflare Workers + D1/R2 。 但我妈嫌自动配色不如她手挑的线准。程序员 vs 一线业务用户，果然是普世矛盾。 欢迎拍砖，尤其是颜色匹配这块，总觉得还能再准一点，有大佬有相关图片转换算法的也欢迎分享讨论~
计算应用栈何时超出AI、托管、数据库等免费层。
@K_dev001 · X
Vibe coding makes launching an app almost free. Running it is another story. I built to calculate your full AI + app stack costs and show which free tier breaks first. Sourced pricing. No signup. No guessing. ->
使用Apexa Pro的100+免费计算器进行数学、化学、物理和财务计算，无需注册。
u/averageChilean · Reddit
Built a free tool site to help my brother study — now has 100+ tools, would love feedback My brother's in high school and needed something more visual to study chemistry, physics, and math, so I used Claude to build him a simple site with interactive calculators and visualizers. I'm not a programmer or from a tech background, so without AI this wouldn't have happened, at least not this fast. It ended up helping him a lot more than I expected, so I kept expanding it, added a bunch of other