{"product_id":"handwerker-studio-kalkulation-angebot-nachtrag-rechnung","title":"Contractor Studio – Estimates, Quotes, Change Orders, Handover and Invoices (Offline App + Excel)","description":"\u003ch2\u003eContractor software with no subscription: estimate, quote, change order, handover and invoice\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eApp + Excel · 5 languages included\u003c\/strong\u003e (English, German, Bosnian, Serbian, Croatian) · Instant download · One-time purchase, no subscription\u003c\/p\u003e\n\u003cp\u003eThe estimate is in Excel, the quote in Word, the hours on a note in the van and the change order was “just verbal”. In the end you don't really know whether the job paid off.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProPraxisPlan Contractor Studio\u003c\/strong\u003e keeps everything for one job in one place: estimate, quote, job site, change orders, handover, invoice and job review.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuy once. Use offline. No monthly subscription. 14-day money-back guarantee.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat Contractor Studio does for you\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eEstimate before it gets expensive:\u003c\/strong\u003e hours per wage group, materials with cost price and markup, subcontractors, equipment and travel. You see the quote price, margin and revenue per labour hour straight away.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWarnings at the right time:\u003c\/strong\u003e price below cost, travel forgotten, materials without markup. “Raise to target margin” puts the price right again.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eQuote in one click:\u003c\/strong\u003e the customer sees only the prices, never your costs. Required details are checked, and the estimate is locked once the quote is sent.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eJob site:\u003c\/strong\u003e working hours, purchases, photos with timestamp and check code, site diary and site report as PDF.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eChange orders:\u003c\/strong\u003e “Can you just do this as well?” becomes paid work – with a price and the customer's signature on your phone before you start.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHandover with signature:\u003c\/strong\u003e result, defects with deadlines and photos, as a PDF record.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eProgress and final invoice:\u003c\/strong\u003e progress invoices as a percentage, final invoice with all approved change orders and paid instalments deducted. Also as an e-invoice (ZUGFeRD or XRechnung to EN 16931).\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eJob review:\u003c\/strong\u003e plan vs actual for revenue, materials, labour and travel – and in plain words what caused the gap.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eYour data stays with you\u003c\/h3\u003e\n\u003cp\u003eThe app runs entirely on your device. No account, no cloud, no data sharing. With the app lock, data and photos are encrypted. When you share with your team, data only leaves encrypted and only the way you set it.\u003c\/p\u003e\n\u003ch3\u003eWho it is for – and who it is not for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eA good fit for\u003c\/strong\u003e trade businesses, painters, tilers, electricians, plumbers, drywallers, landscapers and handyman services with 1 to about 10 people.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot a fit\u003c\/strong\u003e if you need tender data exchange (GAEB), payroll, stock management or a link to wholesalers. If you only want to write invoices and quotes, the lower-priced \u003ca href=\"\/en\/products\/invoice-studio-e-invoice-zugferd-xrechnung\"\u003eInvoice Studio\u003c\/a\u003e is enough.\u003c\/p\u003e\n\u003ch3\u003eIn every ProPraxisPlan tool\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eRuns on computer, iPhone, iPad and Android\u003c\/strong\u003e – on a phone or tablet you open your app link and add it to your home screen; it then runs like an app, offline too. No installation.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eExcel file\u003c\/strong\u003e with overview and charts, jobs, hours, receipts, customers and items\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSecure Sharing by QR code\u003c\/strong\u003e with staff or your accountant: you decide the role, password, validity and approval\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5 languages:\u003c\/strong\u003e English, German, Bosnian, Serbian, Croatian\u003c\/li\u003e\n\u003cli\u003eDark and light design, sample data to try it out\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"ppp-cost\" style=\"margin:28px 0;padding:18px 18px 16px;border-radius:14px;background:#f6f8fa;border:1px solid #e1e6ec;color:#0b1f33;max-width:100%;box-sizing:border-box\"\u003e\u003cp style=\"margin:0 0 6px;font-size:17px;line-height:1.35\"\u003e\u003cstrong\u003eWhat it costs you over the years\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"margin:0\"\u003eComparable subscription apps for contractors start at about $29 a month (≈ $348 a year). You buy Contractor Studio once for $69.\u003c\/p\u003e\u003cdiv role=\"img\" aria-label=\"Cost comparison: subscription $348 in the first year, $1,044 over 3 years; ProPraxisPlan one-time $69\" style=\"margin:14px 0 8px\"\u003e\u003cdiv style=\"margin:0 0 10px\"\u003e\u003cdiv style=\"display:flex;justify-content:space-between;gap:10px;font-size:14px;line-height:1.3;margin:0 0 4px\"\u003e\u003cspan style=\"min-width:0\"\u003eSubscription, 1 year\u003c\/span\u003e\u003cspan style=\"flex:0 0 auto;font-weight:600;white-space:nowrap\"\u003e$348\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"background:#e6eaef;border-radius:7px;height:14px;overflow:hidden\"\u003e\u003cdiv style=\"width:33.3%;height:14px;border-radius:7px;background:#a7b0ba\"\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv style=\"margin:0 0 10px\"\u003e\u003cdiv style=\"display:flex;justify-content:space-between;gap:10px;font-size:14px;line-height:1.3;margin:0 0 4px\"\u003e\u003cspan style=\"min-width:0\"\u003eSubscription, 3 years\u003c\/span\u003e\u003cspan style=\"flex:0 0 auto;font-weight:600;white-space:nowrap\"\u003e$1,044\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"background:#e6eaef;border-radius:7px;height:14px;overflow:hidden\"\u003e\u003cdiv style=\"width:100.0%;height:14px;border-radius:7px;background:#cf8a80\"\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv style=\"margin:0 0 10px\"\u003e\u003cdiv style=\"display:flex;justify-content:space-between;gap:10px;font-size:14px;line-height:1.3;margin:0 0 4px\"\u003e\u003cspan style=\"min-width:0\"\u003eProPraxisPlan, one-time\u003c\/span\u003e\u003cspan style=\"flex:0 0 auto;font-weight:700;white-space:nowrap\"\u003e$69\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"background:#e6eaef;border-radius:7px;height:14px;overflow:hidden\"\u003e\u003cdiv style=\"width:6.6%;height:14px;border-radius:7px;background:#0b8a57\"\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cp style=\"margin:8px 0 0;font-size:12.5px;line-height:1.45;color:#4a5a6a\"\u003ePrices according to the providers’ pricing pages, checked on October 18, 2026; features differ. Cheapest paid plan with quotes and invoices for one user, billed annually, before tax. 3 years calculated at the same price. Amounts in US dollars.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch3\u003eWhat you get (instant download, ZIP)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eContractor Studio as an HTML app in 5 languages\u003c\/li\u003e\n\u003cli\u003eExcel workbook in 5 languages\u003c\/li\u003e\n\u003cli\u003ePDF guide in 5 languages (with your app link for phone and tablet)\u003c\/li\u003e\n\u003cli\u003eVideo tutorial (all 5 languages)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eActivate and get started\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eActivate once:\u003c\/strong\u003e The first time you open the app, enter your name and the \u003cstrong\u003eactivation number\u003c\/strong\u003e from your order email. This needs the internet once, briefly.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 purchase = 1 main device.\u003c\/strong\u003e Staff and more devices join by QR code. New device? Sign out the old one in Settings and activate the new one.\u003c\/li\u003e\n\u003cli\u003eAbout once a month the app briefly confirms your licence when you are online. Only the number is checked – your data stays on your device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOn a phone or tablet?\u003c\/strong\u003e Open \u003ca href=\"https:\/\/app.propraxisplan.de\/contractor\/\"\u003eapp.propraxisplan.de\/contractor\/\u003c\/a\u003e and tap “Add to Home Screen”. Then activate it with the activation number from your order email.\u003c\/p\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need technical skills?\u003c\/strong\u003e\u003cbr\u003eNo. You type text and numbers and click buttons. No formulas, no code.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it work on site on my phone?\u003c\/strong\u003e\u003cbr\u003eYes. Open your app link on your phone and add it to the home screen – it then runs like an app, even without signal. You record hours, photos, change orders and signatures right on site.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I bring over my price list and customers?\u003c\/strong\u003e\u003cbr\u003eYes, from Excel or CSV. You see which column is which first, and only “Apply” saves.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I send e-invoices to business customers?\u003c\/strong\u003e\u003cbr\u003eYes. Progress and final invoices can be created as a ZUGFeRD PDF or XRechnung to EN 16931. Whether and from when you have to issue e-invoices depends on your turnover and your customers – please check with your accountant.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the check codes legal proof?\u003c\/strong\u003e\u003cbr\u003eNo. They show whether a photo or an approved change order was changed later. That helps in a dispute, but it is not a substitute for legal advice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere do I find the activation number?\u003c\/strong\u003e\u003cbr\u003eIn your order email, under the activation number. Enter it together with your name the first time you open the app – it is your personal key.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the internet?\u003c\/strong\u003e\u003cbr\u003eOnly briefly: once to activate, about once a month for the licence check, and for Secure Sharing. Everything else works offline.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat if I change my computer or phone?\u003c\/strong\u003e\u003cbr\u003eSave a backup in the app, sign out the old device in Settings and activate the new one with the same number. Then load the backup – everything is back.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need Excel?\u003c\/strong\u003e\u003cbr\u003eNot for the app, it runs in your browser. You open the included Excel file with Microsoft Excel or a compatible program.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the app in my business?\u003c\/strong\u003e\u003cbr\u003eYes. The licence covers you and your own business, and you add your team by QR code. Only passing it on and reselling are not allowed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre there any extra costs?\u003c\/strong\u003e\u003cbr\u003eNo. Buy once, no subscription.\u003c\/p\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e14-day money-back guarantee:\u003c\/strong\u003e If the app is not right for you, write to info@propraxisplan.de within 14 days of purchase and you get the full price back, no long explanation needed. The activation for your order is then switched off. This voluntary guarantee is in addition to your statutory rights.\u003c\/li\u003e\n\u003cli\u003eDigital product – nothing is shipped. You get the download link right after purchase.\u003c\/li\u003e\n\u003cli\u003eWith Secure Sharing, data is encrypted on your device first.\u003c\/li\u003e\n\u003cli\u003ePersonal licence for you and your business; passing it on and reselling are not allowed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNot tax or legal advice. For tax questions, please ask your accountant.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eMaker: ProPraxisPlan\u003c\/p\u003e","brand":"ProPraxisPlan","offers":[{"title":"Default Title","offer_id":52882062049578,"sku":"PPP-APP-HANDWERK-008","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/5922\/2058\/files\/propraxisplan-handwerker-studio-titelbild.jpg?v=1792287415","url":"https:\/\/propraxisplan.de\/en-us\/products\/contractor-studio-estimates-quotes-change-orders-invoices","provider":"ProPraxisPlan","version":"1.0","type":"link"}