"We committed to a feature in March. Two sprints in, we found a dependency on the old auth layer no-one had touched in eighteen months."
Know what your roadmap can support — before you commit.
hellolang reads your codebase and answers commercial questions in plain English. Feasibility, dependencies, blast radius — translated, never technical. Built for product strategists and programme leads.
The problem
Your codebase already has the answer. It just won't talk to you.
Roadmaps slip because the people deciding what to build can't see what's holding the system together. Engineering knows; product can't ask without translating the question into someone else's calendar.
"Every feasibility question becomes a meeting. By the time engineering has answered, the window for the decision is gone."
"We have four years of inherited logic. Nobody can tell me, in plain English, what the renewals job actually does today."
The cost of guessing
Only 13%
Of executives have full visibility
into each other's priorities and progress toward milestones — Atlassian, State of Teams 2024
48%
Of PMs are stuck in reactive mode
balancing reactive vs. proactive work is the #1 challenge for product managers — Gartner, 2024
1 in 4
Projects don't meet their goals
the average project performance rate is 73.8% — PMI, Pulse of the Profession 2024
See it in action
Four questions. Answered against your real code.
hellolang is read-only. It imports your sources, prepares them, and waits for the question. Every finding is translated — no file paths, no module IDs, no syntax in the answer.
01 · FEASIBILITY CHECK
Stop guessing whether a feature is achievable.
Paste the proposal. hellolang reads the system and gives you a verdict: yes, no, or conditional — with the constraints in plain English. Effort estimates are ranges, not promises.
- ✓Effort range across teams
- ✓Constraints surfaced — never buried
- ✓Risk score, modules affected
02 · DEPENDENCY MAPPING
See the blast radius — before the post-mortem.
Every change has a downstream tail. hellolang surfaces it as a list, not a graph: which teams own it, which scheduled jobs depend on it, what would actually break.
- ✓Cross-team impact in plain terms
- ✓Scheduled jobs and integrations
- ✓"Break" vs "touch" — separated
03 · SYSTEM VERIFICATION
Find out what your product actually does today.
Four years of inherited logic, three product managers in succession, the original engineer long gone. hellolang reads the system and gives you back a verified description, with the lineage attached.
- ✓Behaviour confirmed against the code
- ✓Lineage — when, by whom, why
- ✓Legacy logic surfaced, not hidden
04 · PLAIN-LANGUAGE QUERY
One chat. Any question. Code-grounded.
The same conversation surface for all four capabilities. Switch products from the rail. Ask follow-ups. Reference the previous answer. Every response is a translation, never raw syntax.
- ✓Per-product conversation history
- ✓Threaded follow-ups
- ✓No file paths, no module IDs, no syntax
Who it's for
For the people deciding what to build — not how.
Product managers, programme leads, founders, heads of engineering. Anyone whose decisions need to land against what the system can actually carry.
PM
Product Managers
Stop ending every roadmap conversation with "let me check with engineering".
→Self-serve feasibility
PD
Programme Directors
See the full blast radius across every team before you commit to a quarter of work.
→Cross-team dependencies
FO
Founders & CPOs
Get a straight answer about your product without booking a discovery week.
→Whole-product verification
HE
Heads of Engineering
Give product a self-serve answer to any technical question so your team can keep shipping.
→Engineering throughput
How it works
Three steps. Read-only throughout.
hellolang never writes to your repository. It reads, prepares, and answers — that's the whole loop.
01CONNECT A SOURCE
Paste a repository URL.
Connect GitHub or GitLab. Read-only access only — you choose what to import. Preparation starts immediately.
02WE PREPARE IT
hellolang reads, indexes, translates.
Typically ready in under an hour for medium codebases. We map call graphs, scheduled jobs, and inherited logic — and translate them into product terms.
03ASK ANYTHING
Ask in plain English.
"What would shift if we moved billing?" "Does renewals handle this edge case?" Get an answer grounded in the code, in seconds. Never raw syntax.
Compared to what
Discovery workshops, code search, engineering audits — there's a better way.
Each has its place. None gives you a self-serve, code-grounded answer in plain English. That's the gap hellolang fills.
CAPABILITY
hellolang
READ-ONLY · TRANSLATED
Discovery workshop
2–3 DAY ENGAGEMENT
Code search
DEVELOPER TOOL
Engineering audit
CONSULTING PROJECT
Self-serve · answers in seconds
✓
×
~
×
Plain English, not syntax
✓
✓
×
✓
Grounded in your real code
✓
~
✓
✓
Always up to date
✓
×
✓
×
Designed for non-engineers
✓
✓
×
~
Costs less than a meeting
✓
×
✓
×
Pricing
Free during beta. Honest pricing after.
Beta teams keep their introductory pricing for a full year when we ship general availability. No upsell traps, no surprise tier changes.
Beta access
LIMITED TIME
For teams who want to shape the product. One product workspace, three sources.
€50/mo
Free
DURING THE BETA · BETA PRICE LOCKED FOR YEAR ONE
- ✓One product workspace, up to three sources
- ✓All four capabilities — feasibility, dependencies, verification, query
- ✓Direct line to the team building hellolang
- ✓Cancel any time. No contract.
Standard & Enterprise
For programmes running several codebases. We'll talk price when we know what you need.
Talk to us
CAL.COM · 20 MIN
- ✓Multiple product workspaces, unlimited sources
- ✓Self-hosted option available
- ✓SSO · audit log · role-based access
- ✓Onboarding and integration support
Trust & data
Read-only. Your code stays yours.
ACCESS
Read-only tokens. Source-scoped. Revoke at any time and your imported sources are purged within 24 hours.
TRAINING
Your code is never used to train a public model. Indexes are isolated per workspace, encrypted at rest.
How long does setup take?
A medium codebase — say, under 200,000 lines — is usually ready in under an hour. Larger monorepos run overnight. You'll get an email when preparation is finished.
Do you need engineering's help to get started?
Only to issue a read-only access token to the repository. After that, the people using hellolang day-to-day are typically product, programme, and operations — not engineering.
Which languages and stacks do you support?
TypeScript, Python, Go, Ruby, Java, Kotlin, and C# are well-supported in beta. Mixed-stack monorepos are fine. If you're on something more exotic, ask us when you sign up — we'll tell you honestly whether it works.
Can hellolang change our code?
No. hellolang is read-only by design. There is no write path. Even if a question implies an action, the answer is always a description — never a change.
Is my code used to train a model?
No. Each workspace builds its own private index, encrypted at rest. Your code never crosses into shared training data. Enterprise customers can run hellolang entirely inside their own VPC.
What happens when the beta ends?
We'll publish pricing at least 30 days before general availability. Beta teams keep their introductory price for the first year. Cancel any time — there's no contract during the beta.
Can I see a demo first?
Yes. Book a 20-minute call and we'll walk through hellolang against an example codebase, then talk about whether your situation is a good fit.
Now accepting beta teams
Join the beta.
Tell us a little about your team. We're letting in two to three new ones a week. We read every application — you'll hear from a human within two working days.
↳ BETA · UK & EU · ROLLING INTAKE