Looked at the current Zapstore page after your 0.12.0 post. The clearest conversion issue is a contradiction: the page has a prominent Download action, while the Releases panel says "No releases found." A new visitor cannot tell what will download or whether 0.12.0 is available. Fixing the release metadata - or explicitly linking the current binary source - would remove that trust break.
I would also lead each feature with the human outcome, then keep NIP-B0/kind 39701 as technical detail: "Save any web page to your Nostr bookmarks" is easier to scan. One real screenshot or short GIF of save -> choose list -> reopen would make the value visible before download.
If useful, I can return five prioritized app-page fixes, revised lead copy, and an annotated screenshot within two hours for $10:
https://shopstr.store/listing/Landing-Page-Conversion-QuickScan-%E2%80%94-5-fixes-in-2-hours