Collect with care. Carry the story forward.
Gavelogue helps you see beyond the hammer before you bid, then carries the sources, costs, questions, documents, condition, and provenance into a living, owner-maintained object passport.
● Source-linked passport · Local-first · No tracking
Historical documents
CALCULATED HAMMER LIMIT
$1,055.55
Shipping is confirmed. Due-diligence questions remain.
3 source-linked fields
Listing and terms preserved
Today's collector toolkit
Plan for the full cost. Keep the full story.
The missing middle
Gavelogue carries sources and decisions forward instead of making you rebuild the record after purchase.
01 / BEFORE
02 / AFTER
See beyond the hammer
Start with the all-in limit you choose. Gavelogue projects the maximum hammer under the assumptions you enter; the collecting decision remains yours.
The full app preserves every assumption with the listing and warns when shipping is missing from the projected total.
Calculated hammer limit
$1,055.55Informational estimate for educational and recreational collecting only—not financial or investment advice, an appraisal, or a recommendation to bid or buy. Results depend on the figures you enter and may be incomplete. Verify the auction's terms and consult qualified professionals before acting.
Built around the paper trail
Every suggested field keeps a visible connection to the listing, file, or document it came from.
Nothing becomes part of your record until you review it. Your own facts are never silently overwritten.
The launch edition needs no account or developer-operated server. Gavelogue stores records locally, subject to the Apple backup settings you control.
Gavelogue provides information and recordkeeping—not financial or investment advice, an appraisal, authentication, or a recommendation to bid or buy.
Founding collector cohort
We plan to invite the first 20 collectors of historical documents, autographs, political memorabilia, and ephemera to test the complete workflow.
View launch status Launch edition: free. Founder Pro planned at $39.99 one time after validation.Questions worth asking
It is a living, owner-maintained record that travels with the antiquity: its sources, acquisition, condition, documents, provenance, and later history. It is not government-issued or proof of authenticity or title.
No. It is independent decision support and recordkeeping. Bidding and payment remain with the seller or auction house.
Bring in permitted listing material from the source you use. Select a screenshot, supported file, camera capture, or pasted text and Gavelogue opens a reviewable draft; extraction varies, and manual entry is always available. It does not log in to, fetch from, scrape, or claim an official integration with an auction service.
No. One selected currency applies to every amount in a record. Convert listing prices, your plan, fees, invoices, and owner-recorded values independently before combining them.
No. It helps you organize source-linked claims, questions, expert records, and owner-entered values without pretending to replace a qualified professional.
No. Gavelogue is for general informational, educational, recordkeeping, and recreational collecting purposes. Its calculations and checklists are not recommendations to bid, buy, sell, hold, insure, or value an object. Verify material facts and consult qualified professionals before acting.
The launch edition stores records locally on your iPhone. It has no account, advertising SDK, analytics SDK, or cloud database.
Yes. Export and backup are trust features, not hostage features. The app produces portable PDF, CSV, and local backup files.