When you are on a job site and need to document parts, materials, or equipment, the last thing you want is to rely on memory or scraps of paper that get lost in the truck. A field parts inventory built with photos and structured notes gives you an accurate record you can reference later for quotes, reorders, warranty claims, or client reporting. Retinelle turns your iPhone into a fast, reliable way to capture what you see on-site and keep it organized by job.

Core workflow

Create a project for each client or job site. Separating work by project means you can pull up a specific job months later without scrolling through unrelated entries. If you service the same client across multiple visits, one project per client keeps the full history in one place.
Photograph each part, material batch, or piece of equipment. Take the photo while you are standing in front of it. Waiting until you are back at the office means relying on memory, and memory is unreliable for part numbers and quantities. Capture labels, serial plates, and model stickers up close so the text is legible in the image.
Add notes for quantity, condition, and location. A photo without context loses its value quickly. Record how many units are on hand, whether the part is new or worn, and where exactly it was located on-site. These details turn a snapshot into a usable reference when you are writing up a quote or placing a supply order.
Export your documentation when you need it. Generate a PDF from Retinelle to attach to an invoice, include in a client report, or send to a supplier with a reorder request. The export includes your photos and notes in a clean format that does not require the other person to install anything.

What to capture on-site

Not every part needs the same level of documentation. Here is a practical breakdown:

Replacement parts and consumables: photograph the label or packaging with the part number visible. Note the quantity used, quantity remaining, and whether a reorder is needed. This saves a return trip just to check a number.
Installed equipment: capture the model plate, serial number, and any visible wear or damage. If the unit is under warranty, these details matter when filing a claim.
Materials in bulk (wire, pipe, fasteners, fluid): photograph the storage area or pallet with a reference for scale. Note the approximate quantity or volume and the manufacturer if it is specified for the job.
Damaged or defective items: take multiple angles and include a note describing the issue. This becomes evidence if there is a dispute about what condition something was in when you arrived versus when you left.

Retinelle’s custom fields bring real structure to field documentation. Set up a number field for “Quantity,” a currency field for “Unit Cost,” and an enum for “Status” (In Stock, Needs Reorder, On Order, Defective). These typed fields let you filter your inventory — showing only parts that need reordering, for example — and sort exported PDFs or spreadsheets by cost or status. When you generate a report for a client or a supply order for your distributor, the data is already organized instead of buried in freeform notes.

Why photo documentation beats handwritten notes

A handwritten list of part numbers works until you misread your own handwriting, lose the notebook, or need to share the information with someone who was not on-site. Photo documentation solves all three problems at once.

Photos are also harder to dispute. If a client questions whether a part was installed or a material was delivered, a timestamped photo with notes attached carries more weight than a line in a notebook. For warranty and compliance situations, visual records are often the difference between a smooth resolution and a drawn-out back-and-forth.

Beyond accuracy, photos are faster. Typing out a full description of a circuit breaker panel takes longer than snapping a picture of it and adding a two-word note. The goal is to document thoroughly without slowing down the actual work, and a camera in your pocket already handles the hardest part.

Common field inventory mistakes

Photographing from too far away. A wide shot of a shelf full of parts looks organized but is useless when you need to read a specific part number. Get close enough that labels and markings are legible.
Skipping the context note. A photo of a valve means nothing six months later if you did not note which unit it belongs to, what floor it is on, or why you documented it. Spend the extra five seconds on a note.
Mixing multiple clients in one project. When documentation for different jobs is tangled together, finding what you need takes longer and exporting a clean report for one client becomes difficult.
Waiting until the end of the day to log everything. By then, details blur together. Capture as you go, even if the notes are brief. A rough note taken on-site is more accurate than a detailed one written from memory hours later.

Frequently asked questions

How do I track parts inventory in the field?

The most practical approach is to document as you work rather than treating inventory as a separate task. In Retinelle, create a project for the job, photograph each part with its label visible, and add a short note with quantity and condition. This takes seconds per item and builds a searchable record you can reference from anywhere. When you need to reorder or report, export the project as a PDF. The key is consistency: if you document every job the same way, finding information later becomes predictable instead of a scavenger hunt through old texts and photos in your camera roll.

What is the best app for on-site inventory?

The best app is one that works without network access, captures photos and notes together, and lets you export clean reports. Many inventory tools are designed for warehouse or retail settings and assume a barcode scanner, a stable internet connection, and a desktop for data entry. Field work does not operate that way. Retinelle is built for the phone-in-hand reality of on-site documentation: you open the app, snap a photo, type a note, and move on. Everything stays on your device, so there is no dependency on cell signal or cloud accounts, and you can export a PDF whenever the client or office needs a record.

Should I organize by client or by job?

It depends on the relationship. For one-time jobs, a project per job makes sense. For ongoing service contracts where you visit the same client repeatedly, a single project per client keeps the full history together and makes it easier to spot patterns like recurring part failures or inventory trends. You can always split a project later if it grows too large, so start with whatever grouping feels natural and adjust as needed.

Work and Client Parts Inventory