Stop guessing where your ad budget should go.

ROASt scores campaigns across Google, Meta, and Microsoft using 20+ weighted signals — allocates budget, executes changes, and calibrates itself from outcomes. Every decision is explained.

Scores every campaign with ROAS, confidence, trend, saturation & more
Every decision decomposed — see exactly why each call was made
Platform-safe — respects learning phases, dwell locks, and spend ceilings
Calibration loop learns from every cycle — gets sharper over time
Connect
Audit & Fix
Model
Allocate
Optimise
Improve
Connect
01

Connect your ad accounts

Link your Google, Meta, and Microsoft Ads accounts with a single OAuth flow. ROASt pulls campaigns, budgets, bidding strategies, conversion actions, and impression share — automatically. No CSVs, no API keys, no manual setup.

  • Full read/write API access across all three platforms
  • MCC support — manage multiple client accounts from one login
  • GA4 integration for conversion source routing
02

Audit your accounts. Fix what's broken.

ROASt scans your conversion tracking and account structure automatically. Auto-fixes what it can, flags what it can't. Most accounts have issues they don't know about — and those issues silently inflate your ROAS.

Conversion tracking 2 issues auto-fixed
Budget utilisation Healthy
! Platform coverage 1 gap flagged
Creative health No issues
A Account health Score: 94
03

Model the optimal platform mix

The Strategic Mix Allocator fits Hill response curves per platform — given a total budget, where should each pound go? See exactly where you're saturated and where there's headroom across Google, Meta, and Microsoft.

Total budget £84,000
Model
Google
£35,000 £38,500
+£3,500
Meta
£28,500 £34,000
+£5,500
Microsoft
£20,500 £11,500
−£9,000
Projected revenue uplift +£18,600 (+11.4%)
04

Group campaigns into portfolios

Organise your campaigns into portfolios — by client, brand, funnel stage, or however you work. Set a total budget, allocation constraints, and an optimisation goal. Mix platforms freely in the same portfolio.

Max Revenue
Target ROAS
Max Conversions
Leads
Brand Portfolio
2 campaigns
£5,500Budget
Slightly ahead +7.1%
£49.2kRevenue
£6.3kCost
7.76xROAS
Meta — Prospecting
6 campaigns
£35,000Budget
Slightly ahead +3.2%
£187.3kRevenue
£33.8kCost
5.54xROAS
PMax & Retarget
4 campaigns
£28,500Budget
On pace +4.4%
£151.5kRevenue
£28.9kCost
5.25xROAS
05

Score, allocate, execute

The engine scores every campaign, allocates budget within each portfolio, and executes nightly or intraday. Platform adapters enforce safety constraints at every step.

~
SIGNALS
©
SCORE
CONSTRAIN
ALLOCATE
NEGOTIATE
COMPLETE
INFOBase daily pool: £155.14 (reserve carved: £17.24)
INFOROAS 4.94× · Confidence 0.82 · Trend +6.1%
INFOIS Lost Budget 14.2% · Diminishing returns 0.31
INFOReserve 10% · Profile: balanced · Threshold: 1.00
OK✓ Brand — Exact: +£1.74/d deployed
INFOGrowth tilt: 0.62 · DOW mult: 1.08 · Anomaly: none
WARN× Brand — Broad: signal 6.9× — Below threshold
OKReserve deployed: £1.74 / £17.24 (10% util.)
OKEngine complete · 2 recommendations staged
06

Learn from outcomes. Get sharper.

After attribution lag clears, the calibration system compares predictions to actuals. EWMA bias tracking derives five parameters that feed back into the next run. Shrinkage protects against weak evidence; time decay prevents stale biases.

Saturation Rate 1.38
ROAS Floor 0.62
Conf. Dampening 0.44
Ceiling Multiplier 1.12
Below-Sat K 2.45
Cycle continues

Better data. Better decisions. Every night.

Updated response curves feed the next model. Sharper calibration produces better allocations. The system improves autonomously — while you sleep.

Flume — AI Assistant

Find your flow with Flume.

Flume — ROASt AI assistant for campaign management and reporting

Flume is your ROASt Labs assistant. Ask about performance, compare campaigns, generate reports, or manage portfolios — all in natural language. It uses the engine's real data, not guesswork. Every action requires your confirmation.

  • Generate performance, pacing, and executive reports instantly
  • Manage portfolios, budgets, and automation through conversation
Under the hood

Not another optimisation tool.
A decision engine.

ROASt doesn't guess. It scores campaigns using a deterministic pipeline of weighted signals, statistical modelling, and platform-specific constraints. Every score is decomposed — you can see exactly why each call was made.

Recency-Weighted ROAS IS Lost to Budget IS Lost to Rank Trend Momentum Confidence Composite Diminishing Returns Attribution Lag Day-of-Week Patterns Learning Protection Hill Response Curves Anomaly Detection Growth Tilt
EWMA Calibration Score Decomposition Shrinkage + Time Decay Auto-Personalised Settings Flex Reserve Creative Fatigue Audience Saturation Spend Velocity Detection Ghost Budget Prevention
Read the full technical overview
Platform-safe by design

Engineered for how ad platforms behave.

The engine is platform-agnostic. Platform adapters are the final safety layer — each one knows exactly what that platform can and can't handle.

Google Ads

  • Learning phase lock — max 5% step during learning
  • Spend capacity ceiling — no over-allocating unspent budget
  • PMax ghost capacity detection — freezes reserve for under-spent campaigns
  • 60% cumulative change limit over 7 days

Meta Ads

  • ASC dwell lock — 48-hour minimum between budget changes
  • Native learning stage awareness (learning, learning_limited, active)
  • Creative fatigue and audience saturation detection
  • 45% cumulative change limit over 10 days

Microsoft Ads

  • Ghost budget prevention — freezes under-utilised campaigns
  • Conservative velocity — smaller auction volume means more caution
  • Compound stepping for large recommended increases
  • 60% cumulative change limit over 7 days
Who it's for

Built for people who
actually run ads.

ROASt is for teams that want sharper decisions and cleaner workflows — without buying an enterprise spaceship to change a campaign budget.

Freelancers managing multiple client accounts
Small agencies running nightly optimisation at portfolio scale
In-house teams who want clarity without enterprise bloat
Not built for black-box "AI optimisation" that can't explain itself, bloated enterprise dashboards, or software that needs a week-long onboarding before it lets you change a budget.
Ready when you are

Set your targets.
Let it cook.

No black boxes. No vague AI magic. A deterministic engine that scores, allocates, executes, and learns — across Google, Meta, and Microsoft from one place.

Try ROASt See pricing →

Built for freelancers, small agencies, and in-house teams.