The reference apps that charge you once and then leave you alone

A subscription is a bet that you will still be paying attention to the bill in year three. A one-time purchase is the opposite bet: the vendor is paid once and has to make the app good enough that you keep opening it anyway, with no renewal notice doing the work of retention for them. For a reference library — years of tags, ratings and boards you will still want to open long after the app that made them last shipped an update — that difference in incentive is worth caring about before it is worth caring about price.

Six of the seven tools below are exactly that: pay once, own the license, nothing recurring. The seventh, BeeRef, does not even ask for the once. Checked 5 September 2026 against each vendor's own pricing page, because a "no subscription" claim is the kind of thing that quietly stops being true — a vendor can move a tool from one-time to subscription between two versions, and the only way to know is to read the current pricing page rather than trust what a review said last year.

Why this search even exists

Most of the tools built for moodboards and reference collections default to monthly billing, because that is the standard business model for anything with a login and a server behind it. Milanote's Individual plan is $9.99 a month billed annually. Miro's Starter tier is $8 per member per month. Are.na charges $7 a month for unlimited blocks. None of those numbers is unreasonable for what each product does — but if the job is a desktop board or a local catalogue rather than a hosted, collaborative one, paying monthly for it stops making sense, and that mismatch is usually the actual reason someone searches for a one-time-purchase alternative rather than reads another feature comparison.

refern — $35 once, three platforms

The most capable application in this list by a wide margin, and still a one-time purchase: its pricing page states $35 for a license good on three devices across Windows, macOS and Linux, with every feature included and a 30-day trial that asks for no card. An on-device tagger, search by meaning, a relationship graph, colour search and browser extensions for three browsers are all in that $35 — nothing on this page matches that feature list, one-time purchase or not. The trade is platform breadth against narrower focus: refern runs the same one-time license across three operating systems, which matters if your studio is mixed, and matters not at all if every machine you own is a Mac.

PureRef — pay what you want, or $49 once for a studio

Not a library, and it never claims to be one. A .pur scene holds whatever images you drag onto it, with an always-on-top mode for keeping references in view while you paint. Its download page lists a personal tier at whatever price you choose to pay, and a $49 one-time licence for up to three users in a studio, with free updates for that version line. Version 2.1.3, for Windows 10+, macOS 10.14+ and Linux.

Pick it if the job is a floating board rather than a searchable collection. There is no tagging and no query line here at all — PureRef never claims to be a library, and treating it as one is the most common way people end up disappointed by it. Full comparison.

Eagle — $34.95 once, two devices

A full catalogue app: folders, smart folders, tags, colour, and a browser extension for saving from the web. Eagle's pricing page puts the license at $34.95 with lifetime updates, activated on two devices. Its own documentation says importing copies files into the library rather than indexing them where they sit, which is the real cost behind the price. A library that already runs to hundreds of gigabytes doubles in size the day it moves into Eagle, and that is worth budgeting disk space for before the $34.95 is the number that decides anything. Full comparison.

BeeRef — free, open source, forever

The one entry here that is not a purchase at all. A canvas app for Windows, macOS and Linux under the GNU General Public License v3.0, currently at v0.3.3. Move, scale, rotate and crop a selection, add text notes, and hide the title bar for an always-on-top board. Its own site documents the .bee file format as a SQLite database with images stored inside it, so the escape hatch — reading the file without the app — is published rather than promised. No search, no tags, no library: the board is the whole product, and being free and open source means there is no license to lapse, no company that could start charging later, and no account to lose access to if a vendor shuts its doors. Full comparison.

ImageRanger — $45 once for one machine, $89 for two

A cataloguing tool built around indexing large collections without moving them. Its pricing page lists the Home Edition as a one-time payment for a single machine and a Pro edition, licensed for two machines, both including a year of updates; a separate three-machine tier is billed annually rather than once, which is worth noticing if "one-time" is the whole point of being on this page. Runs on Windows and macOS, and its own site states it indexes files where they already are, down to a NAS or a disconnected drive, rather than importing them.

Pick it if you specifically want a Windows-and-Mac tool that never touches your folder structure and you do not mind a Windows-first interface running on your Mac. It is a rarer combination than it should be — most of the apps on this page are either Mac-native or genuinely cross-platform, and ImageRanger is the one built with a Windows user's habits first and a macOS build second.

Inboard — $19.99 once, macOS only

Built around a narrower job than the others: collecting images you find in a browser, with the page title and source URL saved alongside each one. The App Store listing shows version 1.1.9, updated 9 October 2025, at $19.99, a single one-time price with no separate tiers. It solves a different problem from the catalogue apps on this page — capturing what you find while browsing, not organising a collection you already have — so it is worth owning alongside one of them rather than instead of one. Full comparison.

Coii Ref — $19 once, macOS 11+

Ours, at the bottom of the list on price and the top of it on how little it asks you to trust. It indexes the folders of images and video already on your Mac — nothing copied, moved or renamed — and reads one line of search over all of it: type:image ext:heic added:>2024-01-01 -is:favourite for last year's unrated imports, say. Canvases are .coii-canvas files, pretty-printed JSON sitting in your own folders rather than inside an application's private storage. $19 once, three Macs, thirty days with every feature, no card and no account.

Pick it if you want the "your files stay files" model without paying for the tagger, the meaning-based search or the browser extensions you would get from refern at the same price point on a bigger feature list. Full comparison covers exactly that trade.

All seven, on the number that actually recurs

What "one time" actually buys you

No lever the vendor can pull later. A subscription tool can raise its price, change its tiers, or fold a feature you rely on behind a higher plan, and your only answer is to keep paying or lose access to work you already made. A one-time licence's worst case is that the vendor stops shipping updates — which has genuinely happened to well-liked Mac apps in this category — and the copy you already paid for keeps working regardless.

The math flips fast. Milanote's individual plan is $9.99 a month billed annually — $119.88 in a year, more than every single app on this list except ImageRanger's two-machine tier, and it keeps billing in year two. A one-time purchase's whole cost is visible the day you pay it.

It is not the same as "abandoned." A one-time app can still ship updates for years — Eagle and refern both do — the difference is only that the payment for those updates isn't a recurring line on your card. Read a one-time app's own changelog before assuming "no subscription" means "no maintenance."

It does shift the risk onto you, not the vendor. A subscription vendor has an ongoing incentive to keep shipping, because stopping means the billing stops too. A one-time vendor's incentive to keep updating a version you already paid for is weaker by construction, which is exactly why checking a listed version date — the way this page does for every entry — is worth the two minutes before you buy rather than after — every price and version number on this page was checked the same way, the same day it was written.

What moving off a subscription tool actually costs

The price is the easy part to compare; the harder part is what you are carrying with you. If your boards currently live in Milanote, Miro or a similar hosted tool, expect to export before you cancel — most of these services stop rendering a board the moment the subscription lapses, so the export has to happen while you're still paying, not after. None of the one-time apps above import from a hosted competitor directly; the honest path is to export images and notes to a folder first, then bring that folder into whichever one-time tool fits the job. Coii Ref is the one exception worth naming here on the metadata side: its importer reads a refern library specifically, carrying ratings, tags, notes and canvases across by relative path, without moving or rewriting the originals.

Who should pick which

Pick a one-time catalogue app — Eagle, ImageRanger, or Coii Ref — if you want tags, ratings and search and you are done paying for this particular problem once you have paid for it.

Pick a free or pay-what-you-want board — PureRef or BeeRef — if the job is keeping images in view while you work rather than finding them later.

Pick refern if you want the most capable option on this list and platform flexibility matters, and $35 once is genuinely the least of what you are paying for given what it does.

Pick Inboard alongside whichever catalogue you choose if a meaningful share of what you collect starts life in a browser tab. It is the one tool here that answers that specific moment, and none of the others try to.

None of this is an argument that subscriptions are always the wrong model — Milanote's shared boards and Miro's real-time multiplayer are genuinely features that a one-time license cannot fund the servers for, and paying monthly for exactly that is a reasonable trade if collaboration is the actual job. The seven tools here are for the other case: a Mac-based reference practice, mostly solitary, where the ongoing cost of a subscription buys nothing you would actually use.

If your reason for reading this page is that you specifically do not want another monthly line item for a Mac-only reference library, download Coii Ref and run the 30-day trial before the $19 becomes a decision at all.