Naval Letter Builder for iPhone and iPad
RoxyKovu Government Solutions · iOSBuilt to the manual.
A correspondence builder for iPhone and iPad that now covers both services. Pick the Navy for SECNAV M-5216.5 letters or the Army for AR 25-50 memoranda, with a step-by-step wizard, on-device Apple Intelligence section critics, audited .docx export, and the full 2,240-entry SSIC database bundled for naval correspondence.
33 rules. One tap.
Every letter ships through a 33-rule SECNAV M-5216.5 auditor and a complementary 32-rule format checker. Margins, Courier 10pt body, hanging indents, heading-line spacing per §7-2.6 through §7-2.11, and signature line at the page midpoint per §7-2.14 are all wired to the manual.
Open the wizard
From blank to compliant.
Document setup. Letterhead. Identifiers. Recipients. References. Enclosures. Body. Signature block. Review & export. A single linear path that mirrors the SECNAV order of operations, with mid-session save, swap, and a progress tracker that collapses out of your way once you know the steps. Switch the branch to the Army on the dashboard and the same path produces AR 25-50 memoranda, with Department of the Army letterhead, office symbol and ARIMS line, MEMORANDUM FOR and THRU addressing, and a grade-and-branch signature block.
2,240 codes,
fingertip-fast.
The complete Standard Subject Identification Code list from SECNAV M-5210.2 (Aug 2018), bundled in the app. Type-ahead filter by number or subject, drill into hierarchies, copy back into the letter header with one tap. No network round-trip.
A section editor
that knows the manual.
Per-section "Improve" buttons sit in each step header. Each runs an on-device critic against a SECNAV-grounded prompt that quotes the relevant manual section verbatim, then returns specific Apply / Skip suggestions you can keep or reject. The Review step also runs a Full SECNAV scrub that consolidates every critic into one Apply-all / Skip-all sheet. The critics flag fewer false problems, and the reference helper covers all eighteen SECNAV M-5216.5 reference formats, including the My and Your forms.
Requires iOS 26 or later on an Apple Intelligence-compatible device. The app works fully without it; the AI surfaces hide gracefully.
A bigger canvas
for a wider audit.
The full editor, the live preview, and the validator side-by-side. Letterhead inputs on the left, the rendered letter on the right, format issues highlighted inline. Same audited engine, same on-device data, more room to see your work.
Wired to the manual.
Every format rule traces back to a manual section. When the manual changes, we update the engine, re-run the auditors, and ship. No re-implementing under deadline. No interpretation drift.
SECNAV M-5216.5 CH-1
DON Correspondence Manual. The single source of format truth. Every rule annotated with its manual section number in the engine.
SECNAV M-5210.2
Standard Subject Identification Code Manual. 2,240 codes bundled offline, with hierarchy and type-ahead filter.
On your device.
Off our servers.
Drafts are stored in your iPhone or iPad's local file sandbox. Nothing syncs to iCloud, nothing routes through RoxyKovu. Apple Intelligence runs on-device. An optional Face ID lock keeps your drafts private.
The app lock covers open previews and sheets the moment it locks, a cover screen hides your letter in the app switcher (Settings, Hide previews in app switcher), and any email text you copy auto-expires from the clipboard.
Naval Letter Builder is a third-party tool with no official affiliation with the Department of Defense, the Department of the Navy, the Marine Corps, or any other service branch.
Every screen.
Making the complicated simple,
so the mission gets done.
Naval Letter Builder is now available on the App Store, free for iPhone and iPad. For unit licensing, bulk rollout, or custom requirements, get in touch.
RoxyKovu is a third-party developer. Naval Letter Builder implements the format rules described in SECNAV M-5216.5 but has no official affiliation with the Department of Defense, the Department of the Navy, the Marine Corps, or any other service branch. Privacy · Terms