Mobile App COGS: Unit Economics for Indie Devs (2026)

Indie devs often think of revenue and don't think about COGS (Cost of Goods Sold). The result: surprises later when scale exposes margin issues.

This is the working framework for understanding the real per-user cost of running a mobile app.

What COGS includes for mobile apps

Infrastructure

• Cloud hosting (Vercel, Netlify, Fly, AWS).
• CDN bandwidth.
• Database storage.
• Backup storage.

Backend services

• Authentication service.
• Email delivery.
• Push notifications.
• Analytics service.

Third-party APIs

• OpenAI / AI model API calls.
• Image processing APIs.
• Maps / location services.
• Payment gateway fees.

Customer support

• Support tool subscriptions.
• Time of support staff (or you).

Refund / chargeback

• Direct cost of refunds.
• Indirect cost of disputes.

Apple / Google commission

• 30% standard.
• 15% for Small Business / Year 2+ subscriptions.

Examples by category

Simple utility app

• Hosting: $0-$50/month.
• Backend: $0-$20/month.
• Support: $0-$50/month.
• COGS per user: $0.01-$0.10/month.
• Net margin: very high (80-90%+).

AI-powered app

• Hosting: $20-$200/month.
• AI API calls: $0.01-$0.10 per generation.
• Support: $50+/month.
• COGS per user: $0.50-$5.00/month (depends on usage).
• Net margin: variable (40-70% typical).

Streaming / heavy bandwidth app

• Hosting + CDN: $200-$2,000+/month.
• Bandwidth scaling.
• COGS per user: $1-$10/month.
• Net margin: moderate (50-70%).

Subscription app with cloud sync

• Hosting + database: $50-$500/month.
• Backup storage.
• COGS per user: $0.10-$1.00/month.
• Net margin: high (70-85%).

The per-user cost analysis

For a typical $9.99/month subscription app:

Gross revenue: $9.99
Apple's 30% (year 1): -$3.00
Apple's 15% (year 2+): -$1.50
Stripe (if web-paid): -$0.30

Year 1 net: ~$6.99/month
Year 2+ net: ~$8.49/month

Minus your COGS per user:

If COGS is $0.50/user/month:
Year 1 margin: $6.49 / user / month
Year 2+ margin: $7.99 / user / month

This is your gross profit per user. Healthy.

COGS at scale

Most COGS components scale sub-linearly:

• Hosting: doubles less than 2× per 10× user growth.
• Support: scales linearly with user count.
• AI APIs: scales with feature usage.
• Apple commission: linear with revenue.

Implication: margins improve at scale. Indie devs at $1M MRR have better margins than at $10k MRR.

Calculating your COGS

Per-user model

Monthly COGS = (Fixed costs + Variable costs per user × User count) / User count

Per-user COGS = Fixed costs / User count + Variable per user

For most indie apps:

At 100 users: COGS may be $1+/user/month (fixed costs dominate)
At 10,000 users: COGS may be $0.20/user/month (variable dominates)
At 100,000 users: COGS may be $0.10/user/month (operational efficiency)

Hidden COGS

Beyond obvious costs:

Customer support

If you handle 1 ticket per 100 users per month, at $20/ticket of your time:

COGS per user: $20 × 0.01 = $0.20/month

Often forgotten.

Engineering time

Bug fixes + maintenance. If your hourly cost is $100 and you spend 10 hours/week on maintenance:

Monthly: ~$4,000 maintenance cost
At 10k users: $0.40/user/month maintenance

Not strictly COGS but worth tracking.

Refund costs

If refund rate is 5%:

Average subscription: $9.99 (year 1)
Refunds at 5%: $0.50 per subscription on average

Failed payments

Subscription apps see 5-15% involuntary churn (failed payments):

• Card declined.
• Card expired.

You retry; some recover. Lost revenue.

When COGS hurts margins

AI-heavy apps

If each user generates $5/month in AI API costs and you charge $9.99:

• Net revenue: $6.99 (year 1).
• COGS (AI): $5.
• Margin: $1.99.

Tight.

Mitigations:

• Cap free tier generations.
• Tier pricing for heavy users.
• Optimize AI usage (smaller models, caching).

Heavy bandwidth apps

Streaming or asset-heavy apps:

• Each user costs $2/month in bandwidth.
• Subscription $9.99 → $7 net → $5 margin.

Mitigations:

• CDN caching.
• Bandwidth-aware features.
• Premium tier for high-usage.

Customer support heavy

Apps with complex workflows:

• 10% of users contact support monthly.
• Each ticket = $5 of time.
• COGS per user: $0.50/month.

Mitigations:

• Better in-app help.
• Self-service.
• FAQ + documentation.

The healthy margins target

For most mobile subscription apps:

• Gross margin (after Apple cut): 70%+.
• Operating margin (after COGS): 50%+.
• Net margin (after fixed costs): 30%+.

If you're below these, fix COGS before scaling.

When margins are tight

Diagnose

Calculate per-user COGS. Identify biggest contributors.

Optimize

For each contributor:

• Hosting: move to cheaper providers, optimize queries.
• AI calls: cache, batch, use smaller models.
• Support: improve documentation, automate.

Pricing

If margins are stuck, consider pricing increase. Test.

Feature decisions

Some features are COGS heavy. Decide if their value justifies cost.

Premium tier pricing for high-COGS features

For features that cost real money per use (AI, bandwidth, etc.):

• Basic tier: limited usage (basic features).
• Pro tier: unlimited (higher price).
• Premium tier: power users (highest price).

Match price to usage. Otherwise margins collapse at high usage.

Track these metrics monthly

• COGS per active user.
• COGS per paying user.
• Gross margin (after Apple cut + COGS).
• Customer support tickets per active user.
• AI / API calls per user (if applicable).

These tell you when margins are healthy vs deteriorating.

What kills indie margins

Mistake 1: AI app at fixed price

Heavy AI usage destroys margin.

Mistake 2: free tier without limits

Power users on free tier cost you money.

Mistake 3: too aggressive customer service

Slack tickets per user explodes COGS.

Mistake 4: ignoring refund / chargeback rate

5%+ refund rate often signals trust issues.

Mistake 5: over-engineering features

Some features cost more per user than they generate.

When to raise prices

Signals you should consider:

• Margin tight.
• Competition shows higher prices.
• LTV stable or growing.
• Users tolerate well in surveys.

How to raise:

• Test on new users first.
• Grandfather existing.
• Announce changes clearly.

See pricing psychology.

Common mistakes

• Not calculating COGS. Surprised at low margin.
• Free tier without limits. Loss on heavy users.
• AI pricing without usage tiers. Margin collapses.
• Skipping support automation. COGS explodes.
• Ignoring refund / chargeback rate. Trust issue + cost.

Run an audit

Healthy margins start with healthy retention. Bad retention → high acquisition needs → COGS dominated by acquisition. Run free ASO audit to ensure listing converts retention-worthy users.

Related reading

• Indie App Profitability Benchmarks 2026
• LTV Calculation for Subscription Apps
• CAC for Mobile Apps Explained
• Mobile App Tax & VAT Compliance
• Mobile App Monetization Guide 2026
• Mobile App Pricing Psychology
• ASO for AI / LLM Apps
• Freemium Conversion Rate Optimization

Try the tools

• Ad Analytics Calculator
• Ad Benchmark Analyzer
• Free ASO audit