Privacy policy
What TierWise handles, why, and how to get it deleted. Last updated October 29, 2026.
Who we are
TierWise helps Shopify stores reward their best customers. We built it to hold as little customer data as it can, and we never sell or share it. We're a small team in the United States, and you can reach us at support@tierwise.io.
Who this policy covers
- Stores that install TierWise.
- Shoppers who buy from a store that uses TierWise.
- Visitors to this website.
If you shop at a store that uses TierWise
The store decides to run a loyalty program and TierWise runs it for them. The data belongs to the store. TierWise handles it only on the store's behalf, and only to run that program.
| What TierWise holds about you | Why |
|---|---|
| Your name and email, as the store has them in Shopify | So the store can see who its members are. |
| A summary of each order: its number, date, subtotal, discounts, shipping, tax, status and any discount codes used | Your tier is worked out from what you spent. |
| Your yearly spend, order count and tier | Calculated from the orders above. |
| Reward codes issued to you, sent to you in a campaign, or brought over by the store from its previous program, and when they were used | So a code is never issued twice, and shows on your Rewards page until used. |
| Gifts given with your orders, if the store gives them | So a gift is given once. |
| A tier the store gave you by hand, and until when | So it lasts as long as the store chose. |
| Your birthday month, if you give it on the store's Rewards page. Never the day or year | So the store can give you a birthday perk. |
| Birthday gifts sent to you, and the order they went on | So a gift is sent once a year. |
TierWise does not hold your address, phone number, payment details or the products you bought. If the store sends you a birthday gift, TierWise reads your default address from Shopify at that moment to put it on the gift order, and does not keep it.
All of it comes from the store's Shopify account. TierWise does not collect anything from you directly, and does not track you on the store's website.
If your store installs TierWise
On top of the customer data above, TierWise holds:
- Your store's address on Shopify, its timezone, currency and Shopify plan.
- Your program settings: tiers, thresholds and rewards.
- The access key Shopify issues when you install, which lets the app read orders and write loyalty tags, fields and reward codes in your store.
- Your Klaviyo private API key, if you connect Klaviyo, stored encrypted.
- A key for Claude, if you make one, stored as a hash so it cannot be read back.
Payments for TierWise go through Shopify. TierWise never sees your card or bank details.
How the data is used
Only to run the loyalty program: working out tiers, issuing reward codes, showing the store its members and results, and writing loyalty tags and fields back into the store's Shopify account.
- TierWise does not sell data.
- TierWise does not use it for advertising.
- One store's data is never shown to another store.
Who else handles it
TierWise uses a small number of providers to run. They handle the data only to provide their service to TierWise.
| Provider | What for |
|---|---|
| Shopify | Where the data comes from, and where tags, fields and reward codes are written. |
| MongoDB Atlas | The database. |
| Render | The server the app runs on. |
These providers may store and process data in the United States. This list is updated when a provider changes.
If a store connects its own Klaviyo account, TierWise sends it the store's loyalty events and each member's email, tier, spend this year, distance to the next tier and reward, unused codes and join date. That data is then under the store's own Klaviyo account and agreement, not TierWise's. Nothing is sent to Klaviyo unless the store connects it. If a store sends its events on through Shopify Flow, that happens inside the store's own Shopify account.
If a store connects Claude, Anthropic's AI assistant, it can ask Claude questions about its loyalty program, and TierWise answers each question with the loyalty data it holds: member names and emails, tiers, spend, reward codes and campaign results. That data goes to Anthropic only when the store asks a question, under the store's own Claude account and agreement, not TierWise's. Claude can read the data and cannot change it. Nothing is sent to Anthropic unless the store makes a key, and removing the key stops it.
How long it is kept
- While the app is installed, the data is kept so tiers stay correct.
- After a store uninstalls, Shopify asks TierWise to delete the store's data 48 hours later, and TierWise deletes all of it: order summaries, customer names and emails, tiers, reward code history, settings and the access key. A store that reinstalls within those 48 hours keeps its program.
- When a shopper asks a store to erase their data, Shopify passes the request on and TierWise deletes everything it holds about that shopper.
- A technical record of notifications received from Shopify (identifiers only, no names) is deleted after 30 days.
Nothing in the store's own Shopify account is deleted by any of this. Tags, fields and discount codes already written there stay until the store removes them.
How it is protected
- Data is encrypted while it travels and while it is stored.
- Every request from Shopify is checked for a valid signature before the app acts on it.
- Access to the database is limited to the app itself and to the person who runs TierWise.
No system is perfectly secure. If a breach ever affects a store's data, the store will be told without delay.
Your choices and rights
Shoppers. To see, correct or delete what a store's loyalty program holds about you, ask the store you bought from. The store controls that data, and TierWise acts on its instruction. You can also write to support@tierwise.io and the request will be passed to the store.
Stores. Everything TierWise holds about a customer is visible on their page in the app, and the members list can be downloaded as a file. Uninstalling the app deletes your data as described above. To have it deleted sooner, write to us.
Depending on where you live, the law may give you further rights over your data, such as those in the GDPR in Europe or the CCPA in California. TierWise will help stores respond to any such request.
This website
- There are no accounts, no forms and no cookies on tierwise.io, and no visitor tracking.
- The site is hosted by Netlify, which keeps standard server records such as the IP address of each request.
- The fonts are loaded from Google Fonts, so your browser contacts Google to fetch them.
- If you email us, we keep your message so we can reply.
Children
TierWise is a tool for businesses. It is not aimed at children and does not knowingly collect data from them.
Changes to this policy
When this policy changes, the new version is posted here with a new date at the top.
Contact
Domenico Germano, TierWise. support@tierwise.io
The Data & privacy page in the docs has more detail on permissions and what happens in your store. Stores: our data processing terms set out how TierWise handles your customers' data on your behalf.