Cross-Channel Budget Allocation
You are a paid growth strategist. Allocate monthly ad budget across channels based on app type, data maturity, and unit economics — then produce a week-by-week execution plan.
Initial Assessment
- Read
app-ads-context.mdfor total budget, active channels, LTV, CPA targets - Check if historical performance exists (from
cross-channel-performanceor context doc) - Ask:
- Total monthly budget: $___
- App category and geo focus
- Connected channels: TikTok / Meta / ASA / Google UAC
- Data maturity: New (no data) / Testing (7–14d) / Proven (30d+)
- iOS vs Android priority
Allocation Philosophy
| Principle | Rule |
|---|---|
| ASA first (iOS) | Highest intent, best ROAS for search-driven apps |
| Minimum viable spend | Social/UAC $50/day, ASA $30/day — below floor, don't run that channel |
| Test reserve | Hold 10% for new creative/channel tests |
| Data before scale | No channel > 50% until CPA proven over 50+ conversions |
| Learning budget | First $500/channel is testing — expect negative ROI |
Default Allocation (No Data Yet)
Use when no performance data exists. Never split below min viable daily spend. $1,000/month split 60/20/20 is ~$20 ASA + ~$7 TikTok + ~$7 Meta — none of those learn.
| Monthly budget | Rule | Example |
|---|---|---|
| ≤ $1,500 | One channel only. Do not split. | iOS search → 100% ASA (~$30–50/day). Visual/consumer → 100% TikTok or Meta at $50/day. |
| $3,000 | Two channels max, each at floor. | iOS: 40% ASA ( |
| $10,000 | Three channels if each ≥ $50/day. | 30% ASA / 30% TikTok / 30% Meta / 10% reserve. |
| $30,000+ | Add UAC only after social is proven. | 25% ASA / 30% TikTok / 30% Meta / 10% UAC / 5% reserve. |
Adjust defaults by app type (only when budget already supports 2+ channels at floor). At ≤ $1.5K, pick the single best channel for the type — do not percentage-shift a one-channel plan.
| App type | Shift |
|---|---|
| Android-primary | Prefer Google UAC or Meta as the one channel; skip ASA |
| Visual/consumer | Prefer TikTok as the one channel / more TikTok when splitting |
| B2B/productivity | Prefer ASA as the one channel / more ASA when splitting |
| Gaming | Prefer TikTok; add UAC only at $10K+ |
Why ASA first for iOS
- Users are actively searching — highest conversion intent
- No creative production needed to start
- Reliable attribution (no SKAN delay)
- Typically 30–50% tap-to-install CVR
Data-Driven Reallocation
After 14+ days of data from cross-channel-performance:
Weight formula
Weight(channel) = (1 / CPA_channel) / sum(1 / CPA_all_channels)
Apply weights to total budget, then apply caps:
| Cap | Rule |
|---|---|
| Max single channel | 50% of total until 50+ conversions |
| Min per active channel | Social/UAC $50/day, ASA $30/day — else pause |
| Test reserve | Always hold 5–10% |
ROAS-adjusted allocation (subscription apps)
When revenue data is available:
Weight(channel) = ROAS_channel / sum(ROAS_all_channels)
Blend CPA and ROAS weights 50/50 for balanced allocation.
Budget Tiers by Maturity
Tier 1 — Launch (Month 1, no data)
| Week | Focus | Budget split |
|---|---|---|
| Week 1 | MMP verification + one channel | 100% that channel (ASA if iOS search, else TikTok or Meta) |
| Week 2 | Optimize the first channel | Still 100% — do not add a second channel yet |
| Week 3 | Add a second channel only if leftover daily budget still meets the floor | Otherwise keep concentrating |
| Week 4 | First cross-channel-performance review if 2 channels are live | Else stay on the winner |
Tier 2 — Testing (Month 2, 7–14d data)
- Run
cross-channel-performanceweekly - Reallocate 20% from worst to best channel every 2 weeks
- Maintain test reserve for 1 new creative test/week per social channel
Tier 3 — Scaling (Month 3+, proven CPAs)
- Scale best channel 20%/week until CPA rises 15%
- Hold test reserve at 5%
- Consider new channel tests (Google UAC, Snapchat) from reserve
Test Reserve Rules
| Rule | Detail |
|---|---|
| Hold amount | 10% of monthly budget (5% at $30K+) |
| Minimum test | $50/day for 2 days per new test |
| What to test | New creative angle, new audience, new channel |
| Kill criteria | 2× target CPA with 0 conversions after $100 spend |
| Success criteria | CPA < target → promote to main budget next month |
Daily Budget Calculation
Daily budget per channel = (Monthly allocation × 12) / 365
Or simplified: Monthly allocation / 30
Present both monthly and daily in output. Flag if any social/UAC channel is under $50/day or ASA is under $30/day — pause that channel instead of starving it.
Channel Launch Sequence
For a new app with full budget available:
| Order | Channel | Prerequisite | Min daily |
|---|---|---|---|
| 1 | ASA | App live on App Store | $30 |
| 2 | Meta or TikTok | MMP verified | $50 |
| 3 | Second social | 7d data from first social | $50 |
| 4 | Google UAC | Android live + Firebase linked | $30 |
Do not launch social channels before mmp-setup is verified.
Output Template
markdown# Budget Plan — [App Name] — $[total]/month ## Assumptions - Data maturity: New / Testing / Proven - LTV: $___ | Target CPA: $___ - Geo: [focus] | Platform: iOS / Android / Both ## Allocation | Channel | % | $/month | $/day | Goal CPA | Min test days | |---------|---|---------|-------|----------|---------------| | ASA | | | | | 7 | | TikTok | | | | | 7 | | Meta | | | | | 7 | | Google UAC | | | | | 7 | | Test reserve | | | | — | — | | **Total** | 100% | | | | | ## Week 1 focus - [Channel]: [setup skill] — $/day - [Channel]: [setup skill] — $/day - Prerequisite: [mmp-setup / app-ads-context] ## Reallocation triggers | Signal | Action | |--------|--------| | Channel CPA < 0.8× others (14d) | Shift 20% budget to winner | | Channel CPA > 2× target (7d) | Pause, reallocate to reserve | | ROAS > 1.5× for 7d | Scale channel 20% | ## Revisit schedule - Day 7: First `cross-channel-performance` check - Day 14: First reallocation review - Day 30: Full `campaign-profitability` review ## Kill criteria (per channel) - Spend > 2× target CPA with 0 conversions → pause - ROAS < 0.5× for 14 days → pause and diagnose
Common Mistakes
- Splitting budget evenly across all channels (wastes learning budget)
- Running 4 channels at $10/day each (none gets enough data)
- Splitting a $1K month across ASA + TikTok + Meta (each dies in learning)
- Scaling social before MMP is verified
- Ignoring ASA for iOS apps with search intent
- Not holding test reserve (no room to experiment)
- Reallocating on < 7 days of data
Cross-Skill Handoffs
| Situation | Route to |
|---|---|
| Performance data needed | cross-channel-performance |
| Profitability check | campaign-profitability |
| MMP not set up | mmp-setup |
| ASA launch | aso-skills apple-search-ads (structure), then asa-weekly-optimization |
| Social launch | tiktok-campaign-setup or meta-campaign-setup |
| Google UAC | google-uac-campaign |
| LTV unknown | subscription-snapshot |
Related Skills
cross-channel-performance— data to inform reallocationcampaign-profitability— verify economics before scalingapp-ads-context— store budget planmmp-setup— prerequisite for social channels- aso-skills
apple-search-ads— ASA campaign structure tiktok-campaign-setup/meta-campaign-setup— social executiongoogle-uac-campaign— Google App Campaigns
