If you’re planning to add an offerwall to your mobile app or game, one of the first questions your engineering team will ask is simple: how long will this take?
The answer depends on your platform count, your virtual currency architecture, and whether you’re using server-side reward validation. But after guiding hundreds of integrations across Android, iOS, React Native, Flutter, and Unity, we can give you a realistic timeline — not a marketing promise.
The Short Answer
For a single-platform app with an existing virtual currency system, you can go from SDK install to live offerwall campaigns in 2 to 5 business days. For a multi-platform game with server-side postback validation, expect 1 to 2 weeks.
Here’s the breakdown.
Phase 1: SDK Installation and Initialization (Day 1)
This is the mechanical step — downloading the SDK, adding it to your project, and initializing it. The actual code is minimal:
Android (Gradle): Add the dependency, sync, and initialize in your Application class. Most teams complete this in under 2 hours.
iOS (CocoaPods/SPM): Add the pod or package, import, and initialize in your AppDelegate. Similar timeframe — 2 to 3 hours for a clean project.
Unity: Import the .unitypackage, add the Perkox prefab to your scene, and call Initialize() in your bootstrap script. Unity integrations typically take 3 to 4 hours because of the bridge layer.
React Native / Flutter: Install via npm/pub, link the native module, and call the init method from your JS/Dart entry point. Plan for 3 to 5 hours — the bridge adds complexity on both sides.
Common Day 1 blockers: ProGuard/R8 rules on Android (add the keep rules), App Transport Security on iOS (allow the offerwall domains), and Unity’s IL2CPP stripping (add the link.xml entry).
Phase 2: Virtual Currency Mapping (Day 1-2)
Your offerwall needs to know what currency to reward users in. If your app already has a virtual currency system (coins, gems, tickets, points), this step is fast — you map the offerwall reward to your existing currency ID.
If you don’t have a virtual currency system yet, you’ll need to build one first. This is the most common cause of timeline overruns. A minimal currency system needs:
- A server-side balance ledger (database table or service)
- A client-side balance display
- A deduction/spend mechanism for IAP or premium content
Time estimate: 2 to 4 hours if you have an existing currency. 1 to 3 days if you’re building one from scratch.
Phase 3: Reward Callback Setup (Day 2-3)
This is where the offerwall tells your server “User X completed Offer Y, credit them Z coins.” You have two choices:
Client-Side Callbacks (Faster, Less Secure)
The SDK calls a callback directly in your app code when a user completes an offer. You credit the user’s balance locally and sync to your server later.
- Setup time: 1 to 2 hours
- Risk: Users can intercept and forge callbacks (especially on rooted/jailbroken devices)
- Best for: Games with small reward values where fraud impact is negligible
Server-Side Postbacks (Slower, Industry Standard)
The offerwall platform sends an S2S (server-to-server) postback to your backend when a user completes an offer. Your server verifies the transaction and credits the user.
- Setup time: 4 to 8 hours (endpoint + signature verification + idempotency handling)
- Risk: Near-zero fraud when signature verification is implemented correctly
- Best for: Any app where reward integrity matters (which is every app)
We strongly recommend server-side postbacks. The extra 4 hours of engineering saves you from significant revenue leakage later.
Phase 4: Offerwall UI Placement (Day 3-4)
Now you need to decide where users access the offerwall. Common placements:
- Tab/button in the main menu — highest visibility, best for games with a shop UI
- “Earn” button in the shop/purchase screen — catches users at the moment of payment friction
- Modal on IAP decline — triggered when a user closes the purchase flow without buying
- Dedicated rewards section — for apps with a loyalty/rewards UX pattern
Most integrations use a “Get Free Coins” or “Earn Rewards” button placed near the premium currency purchase button. The offerwall SDK handles the full UI — you just call ShowOfferwall() when the button is tapped.
Time estimate: 2 to 4 hours for placement + styling.
Phase 5: Testing and QA (Day 4-5)
Before going live, test the full flow:
- Initialize the SDK on a fresh device
- Open the offerwall and verify offers load
- Complete a test offer (most platforms provide test offers)
- Verify the reward callback fires (client-side and/or server-side)
- Confirm the user’s balance updates correctly
- Test on both Wi-Fi and cellular connections
- Verify the offerwall doesn’t appear in restricted contexts (during gameplay, ads, etc.)
Time estimate: 4 to 8 hours including bug fixes.
Phase 6: Launch and Campaign Activation (Day 5)
Once QA passes, you switch from test mode to live mode. Campaigns typically activate within minutes. You’ll see the first real offers populate within an hour of going live.
Time estimate: 30 minutes to 2 hours.
Multi-Platform Timeline (1-2 Weeks)
If you’re integrating across 3+ platforms (e.g., Android + iOS + Unity), the timeline extends because each platform has its own SDK and initialization quirks. A typical multi-platform schedule:
| Day | Activity |
|---|---|
| 1-2 | Android SDK + server-side postback endpoint |
| 3-4 | iOS SDK + shared postback verification |
| 5-6 | Unity SDK (if applicable) + bridge testing |
| 7-8 | Cross-platform QA + currency sync verification |
| 9-10 | Final integration testing + launch |
What Slows Integration Down
Based on our experience, the top three timeline killers are:
- No virtual currency system — building one from scratch adds 1-3 days
- Complex server architecture — if your backend doesn’t have a simple endpoint pattern, postback setup takes longer
- Custom build pipelines — if your CI/CD has unusual signing or packaging steps, SDK integration may require extra configuration
What Speeds It Up
- Use the platform-native SDK — don’t try to wrap a web SDK in a WebView unless you have no other option
- Implement server-side postbacks from day one — retrofitting security later is harder than building it in
- Use the integration checklist — our documentation includes a per-platform checklist that covers every step
Conclusion
The offerwall SDK integration timeline is predictable: 2-5 days for a single platform, 1-2 weeks for multi-platform. The SDK itself is lightweight — the real time is in currency mapping, postback setup, and QA. Plan for server-side validation from the start, and you’ll have a fraud-resistant offerwall live in under a week.
Ready to integrate? Get the Perkox SDK and follow our step-by-step integration docs.
