A solo contractor runs an entire business from their phone. Sales calls, estimates, job documentation, invoices, client communication — it all happens on the go, usually between one job and the next.
The right app stack makes that manageable. The wrong apps — too many, too complex, or too expensive — become overhead instead of leverage.
Here are the 5 categories every solo contractor needs, the best options in each, and which ones are free.
App 1: Job Photo Documentation + Local Listing
What it does: Organizes job photos by address with automatic timestamps and GPS. Gives you a professional portfolio and a local listing that helps new clients find you.
Why it matters: Without organized, timestamped photos, you have no proof of what was done and when — which loses disputes, delays insurance approvals, and fails to generate referrals through before-and-after marketing.
Best option: TimeFotos — free to start. Job photos organized by address, timestamped automatically, shareable via professional client links. Includes a free city directory listing at /l/[yourcity]/businesses and marketplace posting. The only photo documentation app that also helps clients find you locally.
App 2: Estimates and Invoicing
What it does: Creates professional estimates and invoices on your phone, sends them to clients digitally, and records payment.
Why it matters: A professional estimate wins bids. A professional invoice gets paid faster. A text message with a number doesn't do either.
Best options:
- TimeFotos (Field Pro) — estimate → work order → invoice in one workflow, tied to your job photos
- Wave — free standalone invoicing
- Joist — free estimate and invoice app for contractors
If you're already using TimeFotos for photos, the integrated billing workflow keeps everything in one place.
App 3: Client Communication and CRM
What it does: Stores client contact info and job history. Makes follow-up fast and professional.
Why it matters: Knowing what you did for a client six months ago — and being able to reference it when they call back — is the difference between a professional service company and a contractor who starts every call from scratch.
Best options:
- TimeFotos (CRM features in Field Pro)
- Google Contacts with notes — free, basic, works for a light client list
- Jobber — robust CRM with scheduling (paid)
App 4: Google Business Profile
What it does: Gets your business into Google Maps and local search results.
Why it matters: When a homeowner in your city searches for your trade, a Google Business Profile with reviews is how you appear.
Best option: Google Business Profile — completely free. No paid version needed. Optimize it by adding photos, services, service area, and actively requesting reviews from every client.
App 5: Payments
What it does: Lets clients pay you immediately and digitally.
Why it matters: A client who can pay with a tap or click pays faster than one who has to write a check, mail it, or find cash.
Best options:
- Zelle — free, instant bank-to-bank transfers
- Venmo Business — free for the contractor
- Square — free card reader, 2.6% + $0.10 per transaction
- Stripe payment links — can be integrated into TimeFotos invoices
The Stack That Costs Nothing
If you're starting out and want a functional solo contractor setup with zero monthly cost:
- TimeFotos free tier — photos, local listing, marketplace posting
- Wave — free invoicing
- Google Business Profile — free local search visibility
- Zelle — free instant payments
- Google Contacts — free basic CRM
When your volume justifies upgrading, the TimeFotos Field Pro trial unlocks integrated estimates, work orders, invoices, and CRM in one platform — at which point you drop Wave and Google Contacts from the stack.
The Bottom Line
Solo contractors who use the right five app categories run professional businesses without back-office staff. The free versions of most of these tools are sufficient at the start. Upgrade when revenue justifies it.