#BuildHybridAI · Web (Chrome)

BillShield

Find overcharges on a medical bill and get a dispute letter, without your name, DOB, MRN or insurance ID ever leaving your device. Raw text is processed on-device; only redacted findings go to the cloud.

Firebase AI Logic: …On-device model: …

1 · Your bill

ST. AUDRA REGIONAL HOSPITAL
ITEMIZED STATEMENT OF SERVICES
Patient: Priya Yamamoto    DOB: 04/20/1968    MRN: MV-7959756
Address: 9438 Cedar Hill Ln, Raleigh, NC 27601
Phone: (669) 555-4620    Email: priya.yamamoto56@example.com
Insurance: Aetna Choice POS II    Member ID: W683882001    SSN: 298-31-5163
Account #: 93257-96    Admission: 03/11/2026    Discharge: 03/13/2026

DATE       CODE   DESCRIPTION                          QTY       UNIT     AMOUNT
03/11/2026 99284  ED visit moderate-high severity        1     880.00     880.00
03/11/2026 85025  CBC with automated differential        1      84.00      84.00
03/11/2026 80053  Comprehensive metabolic panel          1     165.00     345.13
03/11/2026 36415  Routine venipuncture                   1      22.00      22.00
03/12/2026 93005  Electrocardiogram tracing              1     190.00     190.00
03/11/2026 96360  IV hydration initial hour              1     390.00     390.00
03/11/2026 96360  IV hydration initial hour              1     390.00     390.00
03/11/2026 J1885  Ketorolac injection per 15 mg          1     138.00     138.00

SUBTOTAL: 2439.13
Insurance adjustments: -1024.43
TOTAL DUE: 1414.70

Samples are synthetic: fictional patients and providers. Paste a text itemized statement to try your own; nothing is uploaded.

2 · Pipeline

1
Rules scan
Deterministic PII patterns
idle
2
On-device scrub
Gemini Nano, ONLY_ON_DEVICE
idle
3
Leak gate
Blocks any surviving PII
idle
4
Bill audit
7 deterministic rules
idle
5
Dispute letter
Cloud sees redacted text only
idle