Affiliate Code vs Tracking Link: Which One Protects Your Commission on App Deals?

The commission you are promised only exists if the subscription is attributed to you. For a website product that is a solved problem: click a link, a cookie is set, a sale is matched. For a mobile app it is not solved at all, because the purchase happens after an app-store install, inside the app, where a browser cookie cannot follow. This guide explains how links and codes each attribute an app subscription, what the nutrition app programs actually use, and how to make a code work as hard as a link would.

Nutrola runs one of the programs discussed here. Every figure about another program is quoted from that company's own page or its affiliate-network listing, linked under Sources, as checked on 17 September 2026. Terms change; check the source before you rely on a number.

How does a tracking link attribute a subscription?

You post a link. A viewer taps it, a cookie is written in that browser, and if a purchase happens on the merchant's website within the cookie window, the network matches it to you. Three things go wrong with apps:

• The purchase is not on the website. The viewer is sent to the App Store or Google Play, installs, and subscribes inside the app. The cookie stayed in the browser. Some programs simply exclude these sales: YAZIO's FlexOffers listing pays on web sales and states that in-app sales are excluded.
• The window closes. Noom's network listings describe a 30-day cookie; Cronometer's ShareASale listing a 365-day one. A subscriber who thinks about it for five weeks is outside a 30-day window. Renewals a year later are outside almost every window.
• Devices do not match. Watched on a laptop, installed on a phone, paid on the phone. The cookie and the purchase never meet.

None of this is the network cheating you; it is what a cookie can and cannot see. It is also why in-app codes exist.

How does an in-app code attribute a subscriber?

A code moves attribution from the browser into the app. The new user is asked for a code during sign-up, types yours, and the app records the referral before any purchase happens. From then on, everything that user pays can be matched to you: no window, no device matching, no dependence on which platform the person came from. A code read out in a TikTok, printed in a YouTube description or typed from a newsletter attributes exactly like one tapped from an Instagram bio.

Two nutrition apps publish code-based programs. MacroFactor's affiliate program uses a code at sign-up that extends the user's free trial from 7 to 14 days, and pays 40% of the first payment. The Nutrola creator code is entered during onboarding, gives the follower a welcome bonus inside the app in gems, and pays the creator 20% of every payment that follower makes, on the first payment and on every renewal or rebill, for as long as the code is live.

What does each nutrition app program use?

Program	Attribution	Window or condition	In-app subscriptions count?
Nutrola creator code	Code typed in the app at onboarding	None; the referral is recorded at sign-up	Yes, and every renewal
MacroFactor affiliate	Code typed at sign-up	None; first payment only	Yes, first payment
MyNetDiary referral	Code entered at sign-up	Verification period; 20-referral lifetime cap	Yes, first qualified payment
Cronometer affiliate (ShareASale listing)	Tracking link	365-day cookie	Per the listing, sales tracked through the link
Noom affiliate (network listings)	Tracking link	30-day cookie	Per qualified trial or sign-up
YAZIO affiliate (FlexOffers listing)	Tracking link	30-day cookie	No, in-app sales excluded

What is the weakness of a code, and how do you fix it?

Someone has to type it. A viewer who installs from the store on impulse and skips the code field is not yours, however good the reel was. The fixes are mechanical:

1. Keep it short. A code that is your handle or close to it is remembered from the reel to the app.
2. Pin the answer. Under every reel where the app appears, a pinned comment that answers "what app is that?" with the app and your code. That comment thread is where curious viewers go.
3. Put it where people look twice. One line in your bio, a story highlight titled with the app's name, and the last line of the caption on reels where the app is the point.
4. Give a reason to type it. Followers enter a code when it does something for them: a longer trial in MacroFactor's case, a welcome bonus in Nutrola's. Say what it does, in one line.
5. Do not turn the reel into the ad. The reel earns the curiosity; the pinned comment and bio carry the code. More on that here.

What should you ask a program about attribution?

• Code or link? If link, is the purchase on the web or in the app, and do in-app subscriptions count?
• What is the window, and do renewals inside it count?
• Does attribution survive a change of device?
• Can you see your referrals and their status, and how often?
• What voids a referral (self-referral, incentivised sign-ups, refunds), and when is a referral final?

Why the Nutrola code is built the way it is

Because the product is an app, and app subscriptions happen where cookies cannot see. The code is recorded at sign-up, it works from any platform your audience is on, and because there is no window it can pay on the renewal a year later as well as on the first payment. Referrals appear on the monthly statement, the rules that void one are published (only new accounts can redeem, you cannot redeem your own code, incentivised or fake sign-ups void the commission), and a refund inside the payout month is simply not paid rather than clawed back later. The full mechanics are here, and the code is available on its own or alongside a paid deal: apply.