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Cairn
The STR evidence vault. Stop losing AirCover claims.
Cairn is a local iOS evidence vault for short-term rental hosts. It locks native EXIF metadata and strict GPS coordinates directly into property inspection photos, bypassing messaging app compression. Instantly generate AirCover-compliant PDF reports to protect against false damage claims.
Hey Product Hunt! 👋
I’m the founder of Monolithik, and today we’re launching Cairn.
I built this tool to solve a massive, quiet problem in the short-term rental space: platforms are increasingly denying legitimate host damage claims due to "unverifiable evidence."
The Technical Problem: When turnover cleaners take checkout photos on their phones and send them via SMS or WhatsApp, the underlying EXIF metadata (timestamps and strict GPS coordinates) is completely stripped out by the platform's compression. When hosts submit those files, the resolution center sees zero tracking data, assumes the photo is manipulated, and denies the claim.
The Solution: Cairn acts as a completely local evidence vault.
• It utilizes native Apple APIs to lock strict EXIF metadata and GPS coordinates directly into the file at the moment of inspection.
• It instantly compiles a side-by-side, timestamped PDF report that complies exactly with strict platform verification standards.
• It runs 100% securely via your own iCloud. We never see your data or host your property photos on third-party servers.
If you manage properties or just appreciate highly focused utility apps, I’d love to hear your feedback on the UI or answer any questions about the metadata locking architecture!
About Cairn on Product Hunt
“The STR evidence vault. Stop losing AirCover claims.”
Cairn was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #64 on the daily leaderboard. Cairn is a local iOS evidence vault for short-term rental hosts. It locks native EXIF metadata and strict GPS coordinates directly into property inspection photos, bypassing messaging app compression. Instantly generate AirCover-compliant PDF reports to protect against false damage claims.
On the analytics side, Cairn competes within iOS, Photography and Vacation — topics that collectively have 260.7k followers on Product Hunt. The dashboard above tracks how Cairn performed against the three products that launched closest to it on the same day.
Who hunted Cairn?
Cairn was hunted by Coleman Halls. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Cairn including community comment highlights and product details, visit the product overview.
Coleman Halls