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His was only ZIP Codes. USPS only publishes ZIP Code updates once monthly, if I recall right. Technically they are copyrighted by the USPS and you are supposed
by erichurkman 13y ago
His was only ZIP Codes. USPS only publishes ZIP Code updates once monthly, if I recall right. Technically they are copyrighted by the USPS and you are supposed to obtain a reseller license to publish official ZIP Code data.
The rate of change is very low, maybe a dozen changes per month at most. It wouldn't be unreasonable, depending on the app, to keep it reasonably up to date.
- daigoba66 13y agoYou could also have the app phone home every few days asking for up-to-date data, or diffs, and storing it locally (it shouldn't be that big). Then release a new version every now and then with roll-ups.