diff --git a/app/express.js b/app/express.js
index 2824691c..736fc38f 100644
--- a/app/express.js
+++ b/app/express.js
@@ -1,6 +1,7 @@
 import express from 'express'
 import expressHandlebars from 'express-handlebars'
 import sassMiddleware from 'node-sass-middleware'
+import useragent from 'express-useragent'
 
 import { PORT } from './config'
 import log from '../lib/logger'
@@ -12,6 +13,8 @@ import '../helpers/utils'
 
 const app = express()
 
+app.use(useragent.express())
+
 app.use(sassMiddleware({
   src: 'styles',
   dest: 'public',
diff --git a/app/router.js b/app/router.js
index 0d5843bd..b79c2c19 100644
--- a/app/router.js
+++ b/app/router.js
@@ -2,6 +2,8 @@ import app from './express'
 import log from '../lib/logger'
 import sendMail from '../lib/mail'
 
+import _ from 'lodash'
+
 import { Sequelize } from '../db/sequelize'
 import { promiseGallerySort } from '../models/promise'
 import { Promises, Users } from '../models'
@@ -36,12 +38,14 @@ app.get('/_s/:user/:urtext(*)', (req, res, next) => {
   const { ip, originalUrl: urtext, user: { username } = {} } = req
 
   let parsedPromise = parsePromise({ username, urtext })
+  let foundPromise = undefined
 
   return Promises.find({
     where: {
       id: parsedPromise.id
     },
-  }).then(async(foundPromise) => {
+  }).then(async(p) => {
+    foundPromise = p
     let toLog = { level: 'debug', state: 'exists' }
 
     if (!foundPromise) {
@@ -52,7 +56,9 @@ app.get('/_s/:user/:urtext(*)', (req, res, next) => {
         })
 
       if (parsedPromise) {
-        foundPromise = await Promises.create({ ...parsedPromise })
+        const useragent = JSON.stringify(_.pickBy(req.useragent))
+        foundPromise = await Promises
+          .create({ ...parsedPromise, ip, useragent })
           .catch((reason) => { // creating promise failed
             log.error('promise creation error', reason)
             return res.render('404') // FIXME?
@@ -76,7 +82,7 @@ app.get('/_s/:user/:urtext(*)', (req, res, next) => {
 
     return next()
   })
-    .catch((reason) => { // couldn't handle this promise
+    .catch((...reason) => { // couldn't handle this promise
       log.error('promise finding error', reason)
       return res.render('404') // FIXME?
     })
diff --git a/lib/parse/promise.js b/lib/parse/promise.js
index 3d5318df..c59dcdc3 100644
--- a/lib/parse/promise.js
+++ b/lib/parse/promise.js
@@ -76,6 +76,7 @@ export const parsePromise = ({
     ...promise,
     id,
     slug,
+    timezone,
     what,
     urtext,
     cred: parseCredit({ dueDate: tdue, finishDate: tfin }),
diff --git a/models/promise.js b/models/promise.js
index 6799bf1a..b2937ed3 100644
--- a/models/promise.js
+++ b/models/promise.js
@@ -38,6 +38,10 @@ export default sequelize.define('promises', { // sequelize needs the doublequote
 
   clix: { type: Sequelize.INTEGER, defaultValue: 1 }, // number of clicks a promise has gotten
   note: { type: Sequelize.STRING }, // optional additional notes or context for the promise
+
+  ip: { type: Sequelize.STRING, defaultValue: null }, //
+  timezone: { type: Sequelize.STRING }, //
+  useragent: { type: Sequelize.JSON }, //
 }, {
   indexes: [
     {
diff --git a/package-lock.json b/package-lock.json
index 4ba512f4..ef6a4ac9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2636,6 +2636,11 @@
       "resolved": "https://registry.npmjs.org/express-subdomain-handler/-/express-subdomain-handler-0.1.0.tgz",
       "integrity": "sha1-1+M63qsJeKOX2m6knxm5JmnvblM="
     },
+    "express-useragent": {
+      "version": "1.0.12",
+      "resolved": "https://registry.npmjs.org/express-useragent/-/express-useragent-1.0.12.tgz",
+      "integrity": "sha1-W64BCakl7Js1QX8xpOitE/GRJTo="
+    },
     "extend": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.1.tgz",
diff --git a/package.json b/package.json
index b41f33d9..b9e2a7e7 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "express": "^4.16.3",
     "express-handlebars": "^3.0.0",
     "express-subdomain-handler": "^0.1.0",
+    "express-useragent": "^1.0.12",
     "ipapi.co": "^0.2.3",
     "lodash": "^4.17.5",
     "mailgun-js": "^0.16.0",