From the LHB, offline lookup is even slower than online lookup. Also lookup from then NKJV is much, much faster than from the LHB.
In Genesis 30:29, I clicked know, and HALOT appeared in a short time—roughly comparable to online lookup. I hope it will become much faster in the release version.
Clicked the same word in LHB and waited almost five minutes for HALOT to return the wrong definition. I clicked יָדַ֔עְתָּ , but the app returned a definition of ראה , which is not even in the verse—Closest I found, in a quick look at the text, was 20 verses away in verse 9.
OK, let's try the NT—Clicked on ἀναλαβόντες in Ephesians 6:16, and waited more than 5 minutes for logos to return BDAG's entry for τέκνον.