diff --git a/components/form.js b/components/form.js
index 9cbb0be4..a8132e3f 100644
--- a/components/form.js
+++ b/components/form.js
@@ -11,13 +11,19 @@ import Markdown from '../svgs/markdown-line.svg'
 import styles from './form.module.css'
 import Text from '../components/text'
 
-export function SubmitButton ({ children, variant, ...props }) {
-  const { isSubmitting } = useFormikContext()
+export function SubmitButton ({ children, variant, value, onClick, ...props }) {
+  const { isSubmitting, setFieldValue } = useFormikContext()
   return (
     <Button
       variant={variant || 'main'}
       type='submit'
       disabled={isSubmitting}
+      onClick={value
+        ? e => {
+            setFieldValue('submit', value)
+            onClick && onClick(e)
+          }
+        : onClick}
       {...props}
     >
       {children}
@@ -108,7 +114,7 @@ function FormGroup ({ className, label, children }) {
   )
 }
 
-function InputInner ({ prepend, append, hint, showValid, onChange, overrideValue, ...props }) {
+function InputInner ({ prepend, append, hint, showValid, onChange, overrideValue, innerRef, ...props }) {
   const [field, meta, helpers] = props.readOnly ? [{}, {}, {}] : useField(props)
   const formik = props.readOnly ? null : useFormikContext()
 
@@ -132,6 +138,7 @@ function InputInner ({ prepend, append, hint, showValid, onChange, overrideValue
               formik?.submitForm()
             }
           }}
+          ref={innerRef}
           {...field} {...props}
           onChange={(e) => {
             field.onChange(e)
diff --git a/components/item-act.js b/components/item-act.js
new file mode 100644
index 00000000..e493868b
--- /dev/null
+++ b/components/item-act.js
@@ -0,0 +1,102 @@
+import { Accordion, InputGroup, Modal } from 'react-bootstrap'
+import React, { useState, useCallback, useContext, useRef, useEffect } from 'react'
+import * as Yup from 'yup'
+import { Form, Input, SubmitButton } from './form'
+import ArrowRight from '../svgs/arrow-right-s-fill.svg'
+import ArrowDown from '../svgs/arrow-down-s-fill.svg'
+
+export const ItemActContext = React.createContext({
+  item: null,
+  setItem: () => {}
+})
+
+export function ItemActProvider ({ children }) {
+  const [item, setItem] = useState(null)
+
+  const contextValue = {
+    item,
+    setItem: useCallback(i => setItem(i), [])
+  }
+
+  return (
+    <ItemActContext.Provider value={contextValue}>
+      {children}
+    </ItemActContext.Provider>
+  )
+}
+
+export function useItemAct () {
+  const { item, setItem } = useContext(ItemActContext)
+  return { item, setItem }
+}
+
+export const ActSchema = Yup.object({
+  amount: Yup.number().typeError('must be a number').required('required')
+    .positive('must be positive').integer('must be whole')
+})
+
+export function ItemActModal () {
+  const { item, setItem } = useItemAct()
+  const [open, setOpen] = useState(false)
+  const inputRef = useRef(null)
+
+  useEffect(() => {
+    inputRef.current?.focus()
+  }, [item])
+
+  return (
+    <Modal
+      show={!!item}
+      onHide={() => {
+        setItem(null)
+        setOpen(false)
+      }}
+    >
+      <Modal.Body>
+        <Form
+          initial={{
+            amount: 21
+          }}
+          schema={ActSchema}
+          onSubmit={async ({ amount, submit }) => {
+            await item.act({ variables: { id: item.itemId, act: submit, sats: Number(amount) } })
+            await item.strike()
+            setOpen(false)
+            setItem(null)
+          }}
+        >
+          <Input
+            label='amount'
+            name='amount'
+            innerRef={inputRef}
+            required
+            autoFocus
+            append={<InputGroup.Text className='text-monospace'>sats</InputGroup.Text>}
+          />
+          <div className='d-flex justify-content-between'>
+            <SubmitButton variant='boost' className='mt-1' value='BOOST'>boost</SubmitButton>
+            <SubmitButton variant='success' className='mt-1 px-4' value='TIP'>tip</SubmitButton>
+          </div>
+          <Accordion className='pt-3'>
+            <Accordion.Toggle
+              as={props => <div {...props} />}
+              eventKey='0'
+              style={{ cursor: 'pointer', display: 'flex', justifyContent: 'center', alignItems: 'center' }}
+              onClick={() => setOpen(!open)}
+            >
+              {open
+                ? <ArrowDown className='fill-grey' height={16} width={16} />
+                : <ArrowRight className='fill-grey' height={16} width={16} />}
+              <small className='text-muted text-underline'>I'm confused</small>
+            </Accordion.Toggle>
+            <Accordion.Collapse eventKey='0' className='mt-2'>
+              <span>Tips go directly to the poster or commenter. Boosts boost the rank
+                of the post or comment for a limited time, and the sats go to the site.
+              </span>
+            </Accordion.Collapse>
+          </Accordion>
+        </Form>
+      </Modal.Body>
+    </Modal>
+  )
+}
diff --git a/components/item.js b/components/item.js
index fa86a71f..033f128a 100644
--- a/components/item.js
+++ b/components/item.js
@@ -39,8 +39,11 @@ export default function Item ({ item, rank, children }) {
           <div className={`${styles.other}`}>
             <span>{item.sats} sats</span>
             <span> \ </span>
-            <span>{item.boost} boost</span>
-            <span> \ </span>
+            {item.boost > 0 &&
+              <>
+                <span>{item.boost} boost</span>
+                <span> \ </span>
+              </>}
             <Link href={`/items/${item.id}`} passHref>
               <a className='text-reset'>{item.ncomments} comments</a>
             </Link>
diff --git a/components/upvote.js b/components/upvote.js
index 3bd80c41..8684b8d0 100644
--- a/components/upvote.js
+++ b/components/upvote.js
@@ -5,14 +5,16 @@ import { gql, useMutation } from '@apollo/client'
 import { signIn, useSession } from 'next-auth/client'
 import { useFundError } from './fund-error'
 import ActionTooltip from './action-tooltip'
+import { useItemAct } from './item-act'
 
 export default function UpVote ({ itemId, meSats, className }) {
   const [session] = useSession()
   const { setError } = useFundError()
+  const { setItem } = useItemAct()
   const [act] = useMutation(
     gql`
-      mutation act($id: ID!, $sats: Int!) {
-        act(id: $id, act: VOTE, sats: $sats)
+      mutation act($id: ID!, $act: ItemAct! $sats: Int!) {
+        act(id: $id, act: $act, sats: $sats)
       }`, {
       update (cache, { data: { act } }) {
         // read in the cached object so we don't use meSats prop
@@ -59,10 +61,16 @@ export default function UpVote ({ itemId, meSats, className }) {
             session
               ? async (e) => {
                   e.stopPropagation()
+                  if (meSats >= 1) {
+                    setItem({ itemId, act, strike })
+                    return
+                  }
+
                   strike()
                   if (!itemId) return
+
                   try {
-                    await act({ variables: { id: itemId, sats: 1 } })
+                    await act({ variables: { id: itemId, act: 'VOTE', sats: 1 } })
                   } catch (error) {
                     if (error.toString().includes('insufficient funds')) {
                       setError(true)
diff --git a/pages/_app.js b/pages/_app.js
index 708f6556..22f0f812 100644
--- a/pages/_app.js
+++ b/pages/_app.js
@@ -8,6 +8,7 @@ import { LightningProvider } from '../components/lightning'
 import apolloClient from '../lib/apollo'
 import { useRouter } from 'next/router'
 import { useEffect } from 'react'
+import { ItemActModal, ItemActProvider } from '../components/item-act'
 
 function MyApp ({ Component, pageProps }) {
   const router = useRouter()
@@ -30,7 +31,10 @@ function MyApp ({ Component, pageProps }) {
             <LightningProvider>
               <FundErrorProvider>
                 <FundErrorModal />
-                <Component {...pageProps} />
+                <ItemActProvider>
+                  <ItemActModal />
+                  <Component {...pageProps} />
+                </ItemActProvider>
               </FundErrorProvider>
             </LightningProvider>
           </MeProvider>
diff --git a/styles/globals.scss b/styles/globals.scss
index 38ce80c8..0bc6aa47 100644
--- a/styles/globals.scss
+++ b/styles/globals.scss
@@ -5,7 +5,7 @@ $theme-colors: (
   "info" : #007cbe,
   "success" : #5c8001,
   "twitter" : #1da1f2,
-  "boost" : #7A0CE9,
+  "boost" : #8c25f4
 );
 
 $body-bg: #f5f5f5;
@@ -171,6 +171,10 @@ footer {
   fill: #c03221;
 }
 
+.text-underline {
+  text-decoration: underline;
+}
+
 @keyframes flash {
 	from { filter: brightness(1);}
   2% { filter: brightness(2.3); }
diff --git a/svgs/arrow-down-s-fill.svg b/svgs/arrow-down-s-fill.svg
new file mode 100644
index 00000000..10fb6982
--- /dev/null
+++ b/svgs/arrow-down-s-fill.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><path fill="none" d="M0 0h24v24H0z"/><path d="M12 16l-6-6h12z"/></svg>
\ No newline at end of file
diff --git a/svgs/arrow-right-s-fill.svg b/svgs/arrow-right-s-fill.svg
new file mode 100644
index 00000000..fa0db770
--- /dev/null
+++ b/svgs/arrow-right-s-fill.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><path fill="none" d="M0 0h24v24H0z"/><path d="M16 12l-6 6V6z"/></svg>
\ No newline at end of file