Eye is free. Market is £39 a month.

For anyone who looks at art. No card, no expiry.

• A work and an artist to discover each day
• Photograph a work or its label to find out what it is
• Read a work — a careful first reading, never a valuationIt reads paintings and drawings, and sculpture in a first, provisional coverage.
• Keep what you saw, follow the artists you like
• A profile of your eye, private, that you can withdraw or eraseThe aesthetic profile is in beta: it reads your primer today, and the written portrait is still being built.

Each month: 10 readings and 30 questions a month; identifying a work from a photograph is unlimited.

Eye keeps what you choose, and each visit builds on the last.

For those who use Eye every day, at every visit.

• Everything in Eye
• Readings and questions without a monthly limit

Eye+ is sold in the Artmetria Eye app, for iPhone and Android — not on the web. Nothing in Eye's free core becomes paid to make room for it.

For dealers, antique dealers, galleries, advisers and collection managers. Fine art, with paintings and drawings at its heart.

• Auction lots, each with its comparables and the evidence behind them
• An artist's market, sale by sale, by year and by technique
• Houses against their own estimates, and the latest results
• Dossiers, and a printable note with its sources for a client
• Signals by email on the artists, lots and houses you follow
• The works you hold, and where their recorded market stands

One subscription, billed monthly: no upper tier held back, no add-on, no credits to buy. Market is read by its subscribers only: a free account sees none of it, not a thinner version.