Independent developer · Türkiye
I work in two areas: cleaning and automating Excel and product data, and web and desktop tools built for your business. You see what you will get before we start; scripts and tools are delivered with their source code.
Services
Both have the same aim: replacing a phone call, a spreadsheet or a PDF catalogue with something that runs on its own.
For Shopify, WooCommerce, Amazon and Etsy product lists, PDF catalogues and the Excel jobs done by hand every week.
For work that off-the-shelf software does not quite fit: tools that do one job and do it completely.
How I work
I review the work before we start. If doing it by hand is cheaper, or it is not a job I can do well, I say so plainly.
For data collection you see sample output before ordering; for automation you see a test run before delivery.
Scripts and tools are delivered with their source code and a short how-to guide. Re-run them any time, at no extra cost.
No account managers and no ticket queue. You talk to the person writing the code.
About
I'm Semih Turna, a mechanical engineer based in Bursa, Türkiye; I studied at Selçuk University. I work on handing spreadsheets, product lists and hand-made calculations over to small, single-purpose software.
I built the example apps on this site myself, and both are in use. I treat your job the same way: first I tell you honestly what it needs, then I build only what works.
Contact
No technical spec needed. I read your request and give you an honest answer about scope and fit.
Common questions
No. Describe the problem in everyday language and we will shape the right scope together.
Once I have seen the job and any sample file, I give you a clear price before work starts. If the scope grows along the way, I ask you before going further.
Code I write for you is yours: you can use it, change it or have someone else extend it. When I adapt a base I built earlier to your business, you get that too, with its source code and the right to use and change it without time limit; I keep the right to use that base in other work.
Public product pages, Shopify and WooCommerce stores, supplier catalogues. I do not work with CAPTCHA or bot-protected sites, or with login-walled or private data. You see sample output before ordering.
If the project suits it, yes: it can be built as a desktop or phone app that opens from a single file and keeps working offline.
I review your request and reply by your preferred contact method, usually within 1–2 business days.