Mobile App Store Launch Checklist: What First-Time Founders Actually Need to Do

Why Most First-Time App Founders Miss the Launch Window

You've spent months (and money) building an app. Your developer hands you the final build on Friday. You're ready to hit "publish" on Monday—and then you discover your app store account isn't set up, your screenshots are the wrong dimensions, or your privacy policy is buried on a website nobody can find. Now your launch slips by two weeks.

This happens more often than you'd think, and it's entirely preventable. The app store submission process isn't hard, but it has dozens of small requirements that, when missed, trigger rejections and delays.

This checklist covers everything you need to do before submitting to Apple's App Store and Google Play—so you can launch on time, the first time.

Pre-Launch: Build Your App Store Accounts (2–3 weeks before submission)

Set up your Apple Developer account

• Cost: $99/year (non-refundable). Payment must be by credit card; some countries require a business tax ID.
• Time: 24–48 hours for approval after you enroll.
• What to have ready: A valid Apple ID, legal company name or individual name, a physical address (they verify this), and a business or personal tax ID if required in your country.
• Critical: If you're a solo founder or freelancer, use your real name—not a made-up studio name. Apple verifies identity carefully. If your account gets suspended later, appeals take weeks.

Set up your Google Play Developer account

• Cost: $25 one-time fee (paid once to your Google account).
• Time: Instant activation.
• What to have ready: A Google account, business or personal address, and a valid payment method.
• Advantage over Apple: Much faster, but Google Play has more aggressive automated scanning for policy violations. Plan accordingly.

Set up both accounts at least 2–3 weeks before your target launch date. If something goes wrong with account approval or identity verification, you'll have buffer time.

Prepare Your Store Listing Content (3–4 weeks before submission)

App name and keyword strategy

Your app name appears in search results. Choose a name that's simple, memorable, and ideally includes a keyword people actually search for. "CaloriePal" is better than "CP" because someone searching "calorie tracker app" might find it. Avoid special characters or made-up spellings.

For iOS: You can use up to 30 characters (the "Display Name"). You also get a separate "Keyword" field where you list 100 characters of comma-separated terms. Use this ruthlessly: "calorie counter, fitness tracker, diet app, macro tracker, food log."

For Android: Your app name is searchable directly. You have a "Short Description" (80 characters) and a "Full Description" (4,000 characters). Android's search algorithm weights names heavily, so be specific.

Write your app description

This is your marketing copy. You have two versions:

• Short description (80 chars on Android, or the subtitle on iOS): One sentence that tells someone why they need this app. Example: "Track calories and hit your fitness goals in seconds."
• Long description (4,000 chars on Android, 170 chars on iOS): Explain what the app does, who it's for, and why it's better than competitors. Include 3–5 key features. Be honest—exaggeration triggers rejections on both platforms.

Use simple language. Your users aren't tech-savvy; they're busy. "Syncs to the cloud" means nothing. "Your data is safe and available on all your devices" works.

Create screenshots (and they matter more than you think)

Screenshots are the #1 reason users tap "Install." You need 2–5 per platform, and they must meet exact dimensions or the store will reject your submission.

• iOS: 6.5-inch display (1284 × 2778 px) or 5.5-inch display (1242 × 2208 px). Both required if your app supports multiple screen sizes.
• Android: 6.7-inch portrait (1440 × 3120 px) or 5.1-inch portrait (1080 × 1920 px). Again, include both if applicable.

What to show: Your app's best features, in order. First screenshot = the main problem you solve. Last screenshot = call to action ("Sign up" or "Start free trial"). Use 1–2 lines of text per screenshot. Add mockup frames if they look professional; avoid cheesy stock photos.

Pro tip: Use a tool like Figma or Sketch to create these. Even better: hire a designer for 2–3 hours ($200–400) to make them look polished. Screenshots directly correlate with download rate.

Prepare your app icon

iOS: 1024 × 1024 px, PNG format, no transparency, no rounded corners (Apple adds them automatically). Test it at small sizes—does it still look recognizable at 29 × 29 px?

Android: 512 × 512 px, PNG or JPEG, with a safe zone of 200 × 200 px in the center (edges may get cut off on some devices).

Your icon is your brand's first impression. Spend time on it, or pay a designer $100–200 to nail it. A blurry or generic icon tanks download rates.

Legal, Privacy & Policy Compliance (4–6 weeks before submission)

Privacy policy

Both Apple and Google require a privacy policy for every app, even if your app doesn't collect data. This policy must be publicly accessible at a URL (not buried in an email).

What to include: What data you collect (user account info, location, analytics, crash reports), how you use it, how long you keep it, and how users can request deletion. If you use third-party services (Firebase, Mixpanel, etc.), disclose them.

Cost: Use a template from iubenda.com or Termly ($99–199/year for small apps) or write one yourself. Don't copy another app's policy—it will look sketchy to reviewers.

Where it lives: On your website. Example: yoursite.com/privacy. This URL goes directly into your app store listing.

Terms of service

Not always required, but strongly recommended. This covers liability, user conduct, and what happens if you shut down the app. Again, use a template or hire a lawyer for 1–2 hours ($200–500).

Age rating questionnaire

Both app stores require you to rate your app's content. On iOS, it's called the "Age Ratings" form. On Android, it's the "Google Play Content Rating." Be honest. If your app contains ads, mention it. If it has any violence, profanity, or adult themes, disclose it. False ratings cause rejection or account suspension.

GDPR and data handling (if you have EU users)

If your app collects personal data from anyone in the EU, you must comply with GDPR. This includes having a data processing agreement and a way for users to delete their data. Both app stores check for this increasingly often. If your privacy policy is vague or non-compliant, you'll get rejected.

Technical Preparation (2–3 weeks before submission)

Build signing and certificates

Your developer will handle this, but you should know it exists. Both platforms require cryptographic certificates to verify the app is really from you and hasn't been tampered with.

• iOS: You need an "App ID" and a "Distribution Certificate" (handled via Apple Developer account).
• Android: You create a signing key (a single password-protected file). Keep this somewhere safe and don't lose it—you'll need it for every update you ever publish.

Your developer will set this up. Just make sure it's done before the final build is made.

Test the app thoroughly on real devices

Minimum testing:

• iOS: iPhone 12 mini, iPhone 14 Pro Max, iPad (different aspect ratios break layouts).
• Android: Galaxy S20, Pixel 6, and at least one older Android 10 device (many users haven't upgraded).

Test: Onboarding flow, sign-up/login, main features, payments (if any), battery drain (does it crash after 30 minutes?), and offline mode (if applicable).

Critical: Both app stores have automated bots that scan your app. They look for crashes, excessive battery drain, and crashes when the app loses internet. If it fails these checks, you're rejected immediately.

Prepare your demo account credentials

App store reviewers need to test your app. If it requires login, provide test credentials (email + password) that give access to all main features. Include this in your submission notes. If reviewers can't test it, they reject it.

If your app is free, ensure the demo account works. If it's a paid app or has in-app purchases, provide a demo account with premium access—the reviewer won't spend money to test your app.

The Submission Checklist (1 week before your target launch)

For iOS App Store

• App name (30 characters max) ✓
• Subtitle (if using iOS 11+) ✓
• Description (4,000 characters) ✓
• Keywords (100 characters, comma-separated) ✓
• Category selected (e.g., "Productivity", "Health & Fitness") ✓
• 5 screenshots in 6.5-inch format (1284 × 2778 px) ✓
• App preview video (optional, but recommended for higher conversions) ✓
• App icon (1024 × 1024 px, no transparency) ✓
• Support URL (where users report bugs) ✓
• Privacy policy URL ✓
• Copyright year and holder ✓
• Primary language selected ✓
• Age rating completed ✓
• Build uploaded (from your developer) ✓
• Demo account credentials (in "Notes for Reviewers") ✓
• Licensed content disclosed (music, artwork, etc.) ✓

For Google Play

• App name ✓
• Short description (80 characters) ✓
• Full description (4,000 characters) ✓
• Category ✓
• Content rating questionnaire completed ✓
• 4 screenshots in correct resolution (1440 × 3120 px) ✓
• Feature graphic (1024 × 500 px) ✓
• App icon (512 × 512 px) ✓
• Privacy policy URL ✓
• Support email ✓
• Build uploaded (APK or AAB) ✓
• Demo account credentials (in internal notes) ✓
• Pricing selected (free or paid, in-app purchase setup) ✓

Timeline Expectations: What Really Happens After You Submit

Apple reviews in 24–48 hours (sometimes up to 5 business days). Google Play typically processes in 2–4 hours, but can take up to 7 days for first-time apps. Plan for rejection and resubmission—it happens 30–40% of the time on first attempt.

Most common rejection reasons:

• Missing or vague privacy policy.
• Demo account doesn't work or requires payment to test.
• App crashes on reviewer devices (test more thoroughly).
• Misleading screenshots or description ("Earn $500/day!" is an instant reject).
• Bugs in onboarding—if a new user can't complete signup, you're rejected.

If rejected, you get a detailed reason from the reviewer. Fix it and resubmit the same day. Second attempt usually passes.

Post-Launch: The First 72 Hours

Your app goes live. Now what?

• Monitor crash reports: Both stores provide analytics. Check for crashes hourly for the first 48 hours. If something is broken, you can push a hotfix update (turnaround time: 24–48 hours for Apple, 2–4 hours for Google).
• Respond to reviews: Users leave feedback immediately. Respond within 24 hours—it signals you care and helps your app ranking.
• Track your download velocity: You should see a spike in the first week. If not, your screenshots or description aren't compelling. You can update these anytime without resubmission.

Common Mistakes That Delay Launches

1. Not testing on real devices before submission. Emulators lie. Your app might work perfectly on the simulator but crash on real phones. This causes rejection 50% of the time.

2. Screenshots that don't show your app's actual interface. Using mockups or design files? Your screenshots must be real screenshots of the actual app. Apple and Google check this.

3. Privacy policy that doesn't match your app's behavior. If you collect location but your privacy policy doesn't mention it, you're rejected. If you say you don't collect data but you integrate Firebase, you're rejected. Be honest and specific.

4. Forgetting the demo account credentials. Reviewers can't test your app if they don't have a working login. You're rejected on first review, then it takes another 3–5 days to resubmit.

5. Making updates too close to launch date. Stop making changes at least 1 week before submission. Last-minute changes introduce bugs that cause rejections.

How Solo Developers + AI Can Accelerate This (Without Cutting Corners)

The app store launch process requires attention to detail, not coding skill. A solo developer experienced in app launches can:

• Prepare your app store accounts and metadata in parallel while your app is still being built (saving 1–2 weeks).
• Generate compliant privacy policies and terms that pass both stores on the first review.
• Create test scripts and catch bugs before submission that would otherwise trigger rejections.
• Handle resubmissions and post-launch monitoring without delay.

With AI tooling (which a skilled solo developer uses every day), they can also craft compelling screenshots and descriptions, optimize your keywords, and coordinate the entire process. A single experienced person moving fast often launches more smoothly than a larger team with unclear responsibilities.

Ready to Launch? Here's Your Next Step

If you've built an app (or are about to), use this checklist 6 weeks before your target launch date. Check off each item weekly. This keeps you from surprises.

If you're hiring a developer to build your app, make sure they've prepared an app store launch checklist for you and have a clear plan for handling rejections. A good developer won't disappear after handing you the code; they'll guide you through submission and fix any issues that come up.

If you'd like help planning your app launch—or want a developer who's built checklists like this before and knows how to publish app on time, the first time—describe your app idea in an email. I'll send you a fixed quote within 24 hours, no pressure, and we can talk through timeline and launch strategy.