A farmers market app is mostly a list that is wrong by Saturday.
Every other kind of shop keeps the same sellers from one week to the next. A farmers market app cannot. Thirty eight stalls are booked for Saturday, five cancel on Friday night, three turn up who were not on the list, and the strawberry grower is sold out by nine. Who is trading today is the product, and it expires in a day. The plumbing is close to what marketplace apps need, except that the sellers and the stock both turn over every week.
This page covers what a vendor record has to hold, how shoppers use the thing on market morning, what happens when money is involved, and why market tokens decide which stalls can take them.
See how stale the stall list getsThe short version
Build the roster first, and let one person fix it from the gate.
A market app has one job that matters more than the rest. Tell a shopper who is trading today, before they leave the house. The map, the recipes and the stamp card sit on top of that, and they are worth nothing if the list is wrong.
The second job follows from the first. Someone at the gate at seven in the morning has to be able to mark a vendor absent in two taps, and a vendor has to be able to mark themselves sold out without phoning anybody. A list nobody can correct in the field goes stale by the second week.
The vendor record, and why it goes out of date
Start with what a vendor record holds, because a name and a category will not run a market day. Pitch number, what they are bringing this week, load in time, whether they need power, whether they take cards, whether they take market tokens, and a phone number answered at six in the morning. A farmers market vendor app is that record plus a way to change it.
Two of those fields change weekly and the rest barely change at all. Split them. Keep a vendor profile that lasts a season, and an attendance record that belongs to one market day. If attendance is a flag on the profile, you lose the answer to the question every manager gets asked: is that cheese stall usually here.
The field people leave out is the photo. A shopper recognises a stall by its canopy and its crates, not by a registered business name. One photo per vendor, taken on a phone at the market, does more than any description. It also means the list holds files, which is the first part of a local produce app that stops being free.
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How stale the stall list is by nine on Saturday
Every late cancellation, and every stall that turns up anyway, is a shopper walking to the wrong place.
8 of 36 stalls listed wrong
That is 22 percent of the stalls trading today. A list printed before market day cannot know about either group.
Shoppers check one thing, then put the phone away
The journey is short. Is the bread man here, what time do you close, where is he standing. An app that opens on a feed, or asks for a login before it answers any of that, has lost to a text from a friend already at the market. So the home screen is today's list, grouped by category, with a sold out marker and a pitch number, and search matters more than browse because people arrive knowing the name.
One push notification on market morning, with the number of stalls and anything unusual, is the highest value feature after the list itself. For the map, resist the satellite view. A market is forty canopies in a car park, and phone location cannot tell one row from the next. A drawn plan with numbered pitches gets people there, and landmarks beat coordinates: the fountain, the bike racks, the end nearest the road.
Regulars and first timers are different problems, and the temptation is to solve both at once. A stamp card has its own rules about earning and redeeming, and it is closer to a loyalty card app than to a market day app. Ship the list first.
Money moves at the stall, not inside the app
Each vendor is a separate business with their own reader and their own bank account. The moment an app takes a shopper's money for a bag of tomatoes, the market becomes the merchant of record for somebody else's sale. That brings payouts, refunds, chargebacks and an argument about who is liable when the eggs are broken.
If you do take orders ahead for collection, the store rules help. Apple's review guidelines say that if your app enables people to purchase physical goods or services that will be consumed outside of the app, you must use purchase methods other than in-app purchase, such as Apple Pay or traditional credit card entry. So a pre order for Saturday pickup owes no commission. The rule flips for anything unlocked inside the app: subscriptions and premium features do have to use in-app purchase.
Pre orders change the build more than people expect. Once there is a box to hand over there is a collection window, a queue at the stall and somebody crossing off names. If the box leaves in a car instead, you are building a local delivery app with routes and time slots. Either way, settle whether the market takes a cut of what vendors sell before the ordering screens get written.
Apple App Store Review Guidelines, 3.1.3(e) goods and services outside of the app
Market tokens are a rule set, not a checkbox
Plenty of markets run a token system. A shopper swipes an EBT card once at the information booth, takes wooden tokens or paper scrip to the stalls, and the vendors bring the tokens back to be reimbursed. The job of the app inside that loop is small: show which stalls take tokens, show what tokens buy there, and help the booth reconcile at the end of the day.
What tokens can buy is set by the federal definition of eligible foods, not by the market. Eligible foods are any food or food product intended for human consumption, except alcoholic beverages, tobacco, and hot foods and hot food products prepared for immediate consumption. Seeds and plants to grow food for the household count too. So the plant start stall qualifies, the baker selling a cold loaf qualifies, and the hot crepe stall does not.
The same regulation counts a farmers' market as a type of retail food store, alongside ordinary shops. Who holds the authorisation at your market, the market itself or the sellers individually, decides who reimburses whom, so ask the manager rather than coding a default. Then give the booth a form that totals tokens issued and returned per vendor, because counting them by hand at four in the afternoon is the part of market day everybody dreads.
7 CFR 271.2, definitions of eligible foods and retail food store
What each approach gives a market manager
| Option | Changes on the day | Shoppers see it before they leave | Vendor photos | Token stalls flagged |
|---|---|---|---|---|
| Printed sign at the gate | No | No | No | only if reprinted |
| Weekly social post | if someone posts again | Yes | Yes | No |
| A page on the market website | if someone edits it | Yes | Yes | possible |
| Off the shelf market directory | Yes | Yes | Yes | generic |
| A market app you build | Yes | Yes | Yes | Yes |
Building one around your own market
Off the shelf market directories are built for a region, not for your market. They model a market as an address, opening hours and a list of names. They do not model your pitch numbering, your producer only rule, your midweek confirmation deadline, your token scrip or your rain policy. Those are what a manager spends Thursday night on.
Newly is an AI app builder. You describe the app you want, including the rules your market runs on, and it writes a real React Native and Expo project you own, runs it on a cloud simulator while it builds, and sends the iOS build to TestFlight through your own Apple Developer account. Plans start at $25 a month and there is no free plan.
On the photo question, because it decides whether a vendor list costs anything to run: the documentation for Newly Backend says a project that adds it gets a Postgres database for each environment and file storage for things like photos and uploads. That is what we read in the docs, and on that basis a vendor list with photos needs no separate paid image host. No storage quota or file size limit is published, and we have not measured one, so test it with a full market's worth of pictures.
A first version is one screen and one action. The screen is today's list with a photo, a category, a pitch number and a sold out marker. The action is a manager marking a vendor absent from a phone at the gate. If that holds up for four Saturdays, everything else can wait for the winter.
Questions people ask about farmers market apps
Answer who is trading today, before the shopper leaves the house. A list of stalls with a photo, a category, a pitch number and a sold out marker carries most of the value. Recipes and stamp cards are worth less than a list that is right on the morning.
Describe the market you actually run
Write down the rules your market day has, including the confirmation deadline and the rain policy, and build the list around them.
Start building