Evidence before eloquence
Financial facts record source references, as-of time, completeness, warnings, and the calculation version used.
Trading 212-only private beta
Know what changed. Know what matters. Stay on plan.
Folli is an independent financial review layer for self-directed investors. It reconstructs your account history, separates cash flows from returns, and shows the evidence behind every finding.
Read-onlyEvidence-linkedNot investment advice
app.folli.io / reviewIllustrative
What changed
+£1,240
Contributions
+£300
Adjusted change
+£940
Dividends
+£80
One holding crossed 20%
This crosses Folli's neutral review threshold. Compare it with your own concentration policy; it is not a trade prompt.
2 evidence referencesreview-rules-v7
Ask Folli
“Explain why this was flagged and cite every figure.”
The holding is 23.4% of the cached portfolio [F12]. The finding used the neutral 20% review rule—not a suitability judgement.
What changed from real historyWhat matters from clear rulesWhy from traceable evidence
How it works
A review, not another broker dashboard.
Folli uses provider records as evidence, builds deterministic financial facts, and keeps explanation separate from calculation.
01
Connect read-only data
Use a Trading 212 demo or live API key without order-execution or write permissions. Credentials are encrypted and revocable.
02
Reconstruct what changed
Folli stores valuations, holdings, orders, dividends, transactions, and normalised ledger entries to separate cash flows from portfolio movement.
03
Review facts and evidence
Versioned calculations raise restrained findings. Ask Folli explains those facts and cites their supporting evidence.
Available in the beta
- Read-only Trading 212 demo and live connections
- Encrypted credential storage with key rotation
- Scheduled sync and paginated history backfill
- Holdings, snapshots, activity, and lifetime ticker P/L
- Versioned seven-day financial reviews
- Contribution-adjusted change, income return, annualised XIRR, and total return (TWR) where evidence permits
- Evidence-linked findings and feedback
- An account-aware, read-only review copilot
Deliberately not promised
- No trade placement or autonomous investing
- No AI stock picks or personal recommendations
- No live news ranking or analyst-rating feed
- No scheduled market briefs or WhatsApp delivery
- No goal planning, scenarios, or investment journal yet
- No reliable FX attribution without complete comparison data
Trust boundary
The model explains. The evidence decides.
Deterministic calculations
Code calculates returns and findings. The language model explains stored facts; it is not trusted to invent the maths.
Read-only by design
Folli does not place, route, cancel, or manage trades and never asks for Trading 212 write scopes.
Private beta
Review your real data. Challenge every number.
Connect a read-only Trading 212 account, let history backfill, and inspect the facts and evidence behind your first review.