A consult runs on being able to pull up the right reference fast — a placement that worked well on a similar body part, a style study a client half-remembers, a piece of flash that fits the shape they are describing. None of that is hard to have saved somewhere. What is hard, mid-consult, is finding it in under a minute instead of scrolling a phone's camera roll or a Pinterest account with two thousand pins in it while the client waits.
Where saved reference actually piles up
Most working tattoo artists are not collecting into one place. Flash gets saved to a folder on a laptop, style references and inspiration pile up in a Pinterest account or a phone's photo library, and client consult photos live wherever they landed after an email or a text. Each one works fine on its own and none of them talk to each other, so "find everything blackwork I've saved that would suit a forearm" is not a question any of them can actually answer — it is a question about properties spread across three places that were never meant to be searched together.
Flash and style studies, found by what they are rather than where they are
Tag a piece for its style and its subject the moment it is saved —
blackwork, fine-line, traditional, botanical — and the query line
reaches all of it later regardless of which folder or drive it lives on:
type:image narrows to stills, tag:any:a,b matches either tag,
rating:>=4 keeps it to the pieces that actually held up. AND across keys,
OR inside a comma list, no parentheses.
tag:any:forearm,placement-study has:notes annotated placement references
type:image -is:favourite rating:>=3 good pieces not yet pinned
added:>2026-01 tag:any:botanical this year's botanical folder
A term the parser does not recognise renders as free text rather than an error, so a half-remembered word still returns something to narrow down from, which matters most exactly when a client is waiting on the other side of the desk.
Client folders and flash folders, kept apart and searched together
~/Pictures/Studio- Clients
- Flash
- Style studies
- coii-thumbnailswritten by Coii Ref
- coii-proxieswritten by Coii Ref
- coii.dbwritten by Coii Ref
Client consult photos and personal flash are different kinds of material and
usually deserve separate folders — one for privacy and record-keeping, one
for work that is actually for sale. Both can sit inside the same registered
workspace without merging: in:Clients scopes a search to consult photos
only, while a plain tag:any:blackwork search reaches flash and style
studies together, across whichever folder each piece happens to live in.
Nothing about the app requires either folder to move, and nothing it writes
lives anywhere but inside that same Studio folder — which means backing
that folder up backs up client records and flash alike.
Placement, not just style, as a searchable property
A piece that reads well on a forearm often does not read the same on a ribcage,
and remembering which of several hundred saved references suit a given
placement is exactly the kind of thing a memory should not have to hold.
Tagging by placement as pieces are saved — forearm, ribcage,
behind-ear — turns "show me blackwork that would suit this spot" into
tag:any:blackwork tag:any:forearm, both tags required, rather than a
scroll through everything blackwork hoping to spot the right shape by eye.
What happens to a reference a client sent directly
Client reference does not only arrive from a shared Pinterest board — a text message photo, an email attachment, a screenshot sent the morning of the appointment. None of that needs special handling: drop it into the client's folder inside the workspace already registered, and the watcher picks it up on its own, ready to tag and rate the same as anything else. There is no inbox to manage and no import dialog for a handful of new files; the folder is the only thing that has to be true.
Building a style taxonomy that survives your own style changing
Most tattoo artists' work shifts over years — a style favoured five years
ago is not necessarily the one being booked today — and a folder structure
built around a single moment in that development tends to stop making sense
by the time it changes again. Tagging by style and subject rather than
filing by a folder named after whatever the current focus happens to be
means old work does not have to be reorganised every time the style shifts;
tag:any:traditional still returns everything traditional whether it was
saved last month or five years before the current style existed. The tag
describes the piece, not the era it was filed in, so a taxonomy built this
way only grows rather than needing periodic rebuilding.
Backing up a studio's client and flash archive
A shop's saved reference and client photos are not the kind of material
that should exist in only one place, and because everything Coii Ref writes
lives inside the folder it was pointed at — the index, thumbnails and
canvas-ready proxies included — whatever already backs up that folder backs
up the searchable library along with it. There is no separate export step
and no account holding a second copy that could lapse or change its terms;
copying the Studio folder to another drive, or to a second Mac entirely,
copies the whole thing, tags and ratings included, ready to be registered
again with nothing lost.
Comparing this to keeping everything on Pinterest
Pinterest is where a great deal of style research and client-facing inspiration genuinely lives for most tattoo artists, and this page will not argue against that — it is free, and nothing beats it for discovering new work. Pinterest has no account-free option, no offline mode and no way to search by a property like placement or rating, because pins carry what the service knows rather than what a file on a Mac knows. The honest split is the same one that applies to any reference habit built partly on discovery: keep finding new work on Pinterest, and land the pieces that actually get used — flash worth reprinting, style studies worth returning to — as files in a folder where they become searchable by more than a board title.
Comparing this to a library tool that takes ownership of the files
Eagle is a genuinely capable option for the same job and copies whatever is imported into its own managed library, which some artists prefer because everything then lives in one place the app fully controls. Coii Ref takes the opposite approach on purpose: it indexes the Clients and Flash folders exactly where they already sit, so nothing is duplicated onto a second copy and a folder can still be opened, backed up or moved by anything else on the Mac without the app's involvement.
What it costs and what it runs on
$19 once, three Macs, updates included, nothing that renews. The trial runs 30 days with every feature enabled, no card and no account required to start. Requirements are macOS 11 Big Sur or later, on Apple Silicon or Intel, as two native builds.
The app's entire outbound network activity is a licence check on Activate
and a launch-time read of a server's Date header only, so a wound-back
clock cannot extend a trial. No in-app updater means no update check, and
there is no analytics or crash reporting.
Past day thirty of an unpaid trial, one category of action stops: growing the library, meaning registering a new folder, running the importer, or starting an index by hand. Search, tags, ratings, notes and the folder watcher all keep working permanently, so an unfinished trial never turns into a library that can no longer be searched.
Working between a home studio setup and a shop machine
Artists who work from both a home setup and a shared shop machine do not need one workspace to cover both — registering the Flash and Style studies folders separately on each machine gives each one its own local index of whatever is actually stored there, with nothing to sync and no account tying the two together. Licensing covers three Macs on one purchase, which in practice covers a home machine, a laptop and a shop seat without a second payment.
What an old flash sheet is still worth
Flash drawn for a specific style phase or a piece that never got booked does
not stop being useful once the moment it was drawn for has passed, provided
it stays tagged by subject and style rather than only by the date it was
made. A botanical piece from three years ago is exactly as findable today by
tag:any:botanical as it was the week it was drawn, regardless of how many
newer folders have been created since.
What a rating is worth six months into booking from a piece
A flash sheet gets drawn, posted, and either books quickly or sits unbooked
for months, and that outcome is worth recording rather than trusting to
memory the next time a similar piece comes up. Rating a piece once it has
actually been booked and tattooed — five stars for flash that consistently
gets picked, one star for a style experiment nobody chose — turns
rating:>=4 into a shortlist of what is actually worth drawing more of,
rather than a guess based on which pieces happen to be remembered fondly.
None of that needs a spreadsheet next to the flash folder; the rating lives
on the file itself and the query line is the report.
Why this matters more the longer a studio has been open
The value of a searchable archive scales with how long it has been accumulating rather than with how it started. A first-year artist's saved folder is small enough to scroll by eye without much cost; the same folder five or ten years in, mixed with client photos and reference from styles that have come and gone, is exactly the point where a memory-based system quietly stops working and nobody notices until a consult goes badly. The fix is not more discipline about filing — it is not needing to remember the filing at all, because a tag search reaches whatever was saved regardless of when or where.
Who this actually suits
Someone with a real accumulation of saved flash, style studies and client reference spread across more than one place, who wants it searchable during a consult rather than scrolled through by eye. If the actual daily habit is mostly discovering new styles rather than re-finding saved ones, Pinterest remains the better tool for that half of the job, and the round-up of Pinterest alternatives for artists covers the wider field if a hosted, discovery-first tool is still the goal. For the general version of the search argument without the studio-specific framing, the reference-manager page makes the same case, and the photographer-focused page covers a related but different job built around client shoots rather than flash.
Thirty days, every feature, no card and no account: download it and point it at the folder where saved flash has been accumulating the longest. Tag the pieces booked most often first — that is the search that pays off the next time a client describes something "like that piece from a couple of years ago" and means it.