How is Function Point different from Productive.io?

Function Point is more opinionated about agency delivery shape. Productive.io is more configurable but less prescriptive. If your shape really matches Function Point's, it's faster to onboard and gets you to clean reporting quicker. If your shape doesn't match, the configuration ceiling hits sooner than Productive.io's.

Can Function Point handle a custom sign-off flow?

Not really. Their workflow is built on task statuses, which works for work that moves in a straight line but not for steps that set things off when they change (a record of the change, a chain of notifications, locking the scope). If your review process is the part of delivery that matters to your clients, Function Point will feel thin.

What's the upgrade path from Function Point to a custom portal?

Cleaner than you'd expect. Their data model is reasonable and their CSV exports are honest. The migration looks like: lift clients, projects, time entries, invoices into the new schema, write the rules for each step of the workflow, then add AI at the handoffs where people were losing the most time. Not trivial but not a nightmare. I've seen this migration done in six to ten weeks.

Does a custom portal need to replicate Function Point's reporting?

Only the parts you actually use. Most agencies use a margin-per-client report, a utilization report, and an aging-receivables report. Three reports is a small surface. The dashboards that look impressive in the Function Point demo don't usually map to actual decisions.

How long is the typical custom build for an agency Function Point's size?

For a 15 to 25 person agency, four to ten weeks to a working portal handling live client work. Then twelve months of evolution rather than rebuild. The agency portal I built gets you there, because the parts already exist and already run: a code recount on 21 July 2026 measured 84 database models, 255 endpoints and 9 scheduled jobs in that one codebase. The work is shaping that to your delivery, not inventing it.

Comparisons

Function Point vs a custom agency portal: where the seams show up

Function Point models your delivery as if every agency does retainers and projects the same way. They don't. The custom-build conversation is almost always about the parts of your shape Function Point flattens.

Who each is for

Function Point

Pick Function Point when your delivery is straight-down-the-middle agency: discovery, proposal, project kickoff, invoiced retainer plus billable hours, monthly P&L per client. If your shape fits that mold and you're 15+ people, Function Point's reporting and resourcing tools save you from building yourself.

A custom build

Go custom when your delivery has anything off-pattern: hybrid retainer models, review handoffs in several stages that matter to clients, AI in the workflow, scope that has to stay locked once agreed rather than just noted, or client-facing pages in your own brand. Also when you're under 15 people and per-seat pricing works against you.

The honest version

Function Point has a clear thesis: every agency runs the same shape under the marketing copy. Discovery, proposal, kickoff, project, invoice. They've built a strong tool around that thesis, and if your agency really runs that shape, Function Point will get you to clean reporting faster than a custom build.

The problem is the thesis is wrong for most agencies under 25 people. The shape is more idiosyncratic than the marketing materials admit. By month four you've either bent your delivery to fit the tool or you're maintaining Notion docs to cover the parts the tool flattens. Both options are expensive in different ways.

Where Function Point wins

Their reporting is good for the standard agency shape. Margin per client, utilization across team, billable-versus-non-billable, retainer drawdown. If those are the metrics you ship to your board, Function Point gets you there in a quarter.

Their resourcing tool (who's working on what next week, who's overcommitted) is a real piece of work. Building it from scratch is expensive and most agencies don't need it badly enough to justify the build.

Onboarding velocity is fast if your shape matches. Two weeks of admin work and you're operational.

Where Function Point breaks

Every step is the same kind of step. Their workflow is "a task changes status," not "a deliverable moves through review, and each move sets off the right next thing." If your review process is the part of delivery your clients see (and it usually is), Function Point's model is thin. You'll end up emailing PDFs around because the in-tool review surface doesn't carry the weight.

You hit the limits of the settings early. Custom fields exist. Custom workflow logic doesn't. Anything multi-step or with conditional branching pushes you to Zapier, which then becomes another tool to maintain.

Client-facing surfaces are utilitarian. They look like Function Point. If your brand promise includes the client experience, this is a real cost. The agencies I work with usually start the custom-build conversation when their CEO sees a competitor's branded portal and asks why theirs looks like a SaaS.

No serious story for AI in the workflow. Not a knock specifically, the whole category is behind here. But it means the upgrade path is "wait for them to ship it" or "go custom."

What custom looks like for an agency this size

The agency portal I built for a 4-year client is a working example. Every inquiry moves through 12 fixed steps. Every deliverable goes through sign-off, from draft to internal approval to client approval, and loops back when the client asks for changes. Changes to contracts are kept for seven years, everyday changes for one. AI runs inside the intake (follow-up questions, a brand brief from the client's website), writes a brief for each task from the agreed scope, and a nightly check emails the admins when something looks wrong. Branded all the way through.

That system is larger than the feature list makes it sound. When I had the code counted on 21 July 2026 it came back with 84 database models, 255 endpoints and 9 scheduled jobs, all documented and ready to reuse. When I build for the next agency, I work down that surface and decide what to keep, drop, or customize. The unit of work is a slice of something already running, not a blank page.

Onboarding is the other place it lands. Getting a new client activated on that portal takes about ten minutes, replacing the two to three days of back-and-forth email it used to take.

The point of the custom build isn't to outdo Function Point on reporting. It's to win the parts Function Point flattens: the client experience, the sign-off flow, and AI that works inside the process rather than alongside it.

How to decide

Run this in order:

What does your client see? If they receive PDFs and Slack updates, Function Point is fine. If they should be logging into a portal, Function Point loses on experience.
Does your team email PDFs around for review? If yes, your tool's review surface is broken and Function Point's isn't going to fix it.
Will AI assist matter inside the next 12 months? If yes, plan for custom. The off-the-shelf agency PM category is behind on this and will be for a while.
What's your seat count and growth trajectory? Under 15, custom retainer math wins. 25+, Function Point's per-seat economics start to make sense unless you have non-arithmetic reasons to go custom.

If you're between Function Point and a custom build and want an honest second opinion, book a call. I won't pitch you something that doesn't fit.

Common questions

How is Function Point different from Productive.io?: Function Point is more opinionated about agency delivery shape. Productive.io is more configurable but less prescriptive. If your shape really matches Function Point's, it's faster to onboard and gets you to clean reporting quicker. If your shape doesn't match, the configuration ceiling hits sooner than Productive.io's.
Can Function Point handle a custom sign-off flow?: Not really. Their workflow is built on task statuses, which works for work that moves in a straight line but not for steps that set things off when they change (a record of the change, a chain of notifications, locking the scope). If your review process is the part of delivery that matters to your clients, Function Point will feel thin.
What's the upgrade path from Function Point to a custom portal?: Cleaner than you'd expect. Their data model is reasonable and their CSV exports are honest. The migration looks like: lift clients, projects, time entries, invoices into the new schema, write the rules for each step of the workflow, then add AI at the handoffs where people were losing the most time. Not trivial but not a nightmare. I've seen this migration done in six to ten weeks.
Does a custom portal need to replicate Function Point's reporting?: Only the parts you actually use. Most agencies use a margin-per-client report, a utilization report, and an aging-receivables report. Three reports is a small surface. The dashboards that look impressive in the Function Point demo don't usually map to actual decisions.
How long is the typical custom build for an agency Function Point's size?: For a 15 to 25 person agency, four to ten weeks to a working portal handling live client work. Then twelve months of evolution rather than rebuild. The agency portal I built gets you there, because the parts already exist and already run: a code recount on 21 July 2026 measured 84 database models, 255 endpoints and 9 scheduled jobs in that one codebase. The work is shaping that to your delivery, not inventing it.