guide
A privacy-friendly analytics starter stack
Useful defaults for measuring product behavior without heavy tracking.
- Published
- July 10, 2026
- Last checked
- July 19, 2026
- Author
- IndieAppStack
Short answer
Start with a tiny event taxonomy and one privacy-first analytics tool, not a data platform. For an Apple-first indie app, TelemetryDeck is a strong default because it is built around anonymized, aggregate signals and keeps the App Store privacy story clean. Reach for PostHog when you genuinely need funnels, feature flags, experiments, or session replay in one broader system. Use Firebase Analytics only when the app already lives in Firebase.
The tool matters less than the discipline: measure a handful of events tied to decisions you will actually make, keep the names consistent, and delete anything that never changes a choice.
Solo builder scope
Why privacy-first is the practical default
Privacy-friendly analytics is not only an ethics choice; it is the lower-friction path for a solo app:
- App Store privacy labels and the tracking prompt are simpler when you do not collect identifiers or track across apps.
- Anonymized, aggregate metrics still answer the early questions that matter: are people activating, viewing the paywall, and converting?
- Less personal data means less to secure, disclose, and worry about.
You can always add deeper analysis later. It is much harder to walk back a data model that quietly collected everything.
Start with fewer events
A clear five-to-eight event taxonomy beats a noisy dashboard nobody trusts. For most subscription MVPs, start here:
Starter event taxonomy
| Event | Why it matters |
|---|---|
| onboarding_completed | Activation: did the user reach first value? |
| core_feature_used | Engagement: did they do the main job? |
| paywall_viewed | Monetization intent: did they reach the offer? |
| purchase_started | Funnel: did they begin checkout? |
| purchase_completed | Revenue conversion |
| restore_attempted | Support and reinstall friction |
| subscription_status_changed | Retention and churn signal, where available |
Keep names lowercase and stable, and prefer a few well-defined properties over free-form blobs:
{
"event": "paywall_viewed",
"properties": { "source": "onboarding", "offering": "annual_default" }
}Choosing the tool
Analytics tool fit
| Decision | TelemetryDeck | PostHog | Firebase Analytics |
|---|---|---|---|
| Best fit | Privacy-first Apple app analytics | Broad product analytics in one system | Apps already inside Firebase |
| Data model | Anonymized, aggregate signals | Events, funnels, flags, replay | Events tied to the Firebase console |
| Strengths | Simple, privacy-friendly, SwiftUI-friendly | Funnels, feature flags, experiments, session replay | Sits beside Crashlytics and Remote Config |
| Watch out for | Less deep for complex funnels | More surface area than an MVP needs | Ties analytics to the Google ecosystem |
- Use TelemetryDeck when you want privacy-friendly signal fast, especially on Apple platforms.
- Use PostHog when funnels, flags, experiments, or replay will change weekly decisions; it has a generous free tier and usage-based pricing.
- Use Firebase Analytics when the app is already in Firebase and you want analytics beside crash reporting.
- Consider Mixpanel or Amplitude only when product analytics is a core, ongoing workflow rather than a launch need.
What to skip early
- Cross-app tracking and advertising identifiers before you run paid acquisition.
- Attribution platforms before there is spend to attribute.
- Session replay and heatmaps before there is enough traffic to look at.
- A data warehouse or BI dashboards before one simple view changes a release decision.
Keep the taxonomy honest
Re-read the event list monthly. If an event has not changed a single decision, remove it. A small, trusted set of metrics you actually act on is the goal, not coverage.
Best for
- Apps that need activation, engagement, and conversion signal without heavy tracking.
- Builders choosing between TelemetryDeck, PostHog, and Firebase Analytics.
- Teams that want App Store privacy labels to stay simple.
Not good for
- Apps that require paid-acquisition attribution before product analytics.
- Teams that cannot keep event names consistent across releases.
Internal links
- Browse more analytics tools.
- Connect measurement to monetization decisions and the subscription MVP stack guide.
- Instrument the paywall funnel from best paywall tools for iOS apps.
- Add reliability signal with the crash reporting setup guide.
- Wire analytics in during the mobile app launch stack checklist.
Source checks
Product and pricing claims were checked against official sources. PostHog pricing was re-checked on 2026-07-09:
- PostHog pricing and docs: https://posthog.com/pricing and https://posthog.com/docs
- TelemetryDeck docs: https://telemetrydeck.com/docs/
- Firebase Analytics docs: https://firebase.google.com/docs/analytics
TelemetryDeck plan details were last confirmed on 2026-07-01; check the current plans on the TelemetryDeck site before committing. Pricing thresholds are summarized at a high level. No hands-on testing claims are made in this guide. The event map is an owned conceptual visual created for IndieAppStack.
Last checked: 2026-07-09.