Most pool service software does roughly the same set of things. Route building, work orders, chemical logging, invoicing, a customer portal, a tech app for the truck. Once you’ve watched three demos, the feature checklists start to blur together.

Where they stop being the same is the invoice they send you every month. That’s the part nobody puts on the comparison page, because it’s the part that’s awkward to talk about — and it’s the only part that changes as your business grows.

I priced out the three platforms pool operators ask us about most: Skimmer, PoolBrain, and Ernie. Same features, three completely different billing philosophies. Here’s the math.

Disclosure up front: Tradesman Times has an editorial relationship with Ernie. We’re telling you that before the recommendation, not after. The prices below are public list prices for all three vendors, the cost scenarios are arithmetic you can redo yourself, and we’ve noted where Ernie is worse as well as where it’s better. Read our disclosures if you want the full policy.

The three pricing models

The feature sets are close enough that the pricing model is the real decision. There are only three on offer here, and they behave very differently as you grow.

Platform	How it bills	Base / unit price	What scales the bill
Skimmer	Base + per pool	~$49–$98/mo base plus $1–$2 per serviced pool/month	Every pool you add
PoolBrain	Per technician	~$55/tech/month + $10/mo for office users	Every tech you add
Ernie	Flat	$24.99/month, up to 5 users, unlimited sites	Nothing per-pool; +$5/user past 5

Skimmer’s per-location fee is the one to watch: it’s charged per serviced pool whether you visit weekly or monthly, and Skimmer doubled it from $1 to $2 in 2024. PoolBrain avoids per-pool billing but charges per field tech — which scales at the exact moment a growing route forces you to hire. Ernie’s bill doesn’t move with either pools or visits; you only pay more if you cross 5 users, at $5 each.

What it actually costs at three route sizes

List prices are abstract. Here’s the same three platforms priced against three real operations. I’m using Skimmer’s $2/pool tier and a $98 base, PoolBrain at $55/tech + $10 office, and Ernie’s flat plan with $5/user past the included 5.

Operation	Skimmer	PoolBrain	Ernie
Solo, 80 pools, 1 tech	~$98 base + $160 = $258/mo	$55 + $10 = $65/mo	$24.99/mo
Growing, 250 pools, 3 techs	~$98 + $500 = $598/mo	$165 + $10 = $175/mo	$24.99/mo
Established, 600 pools, 5 techs	~$98 + $1,200 = $1,298/mo	$275 + $10 = $285/mo	$24.99/mo

The Ernie column doesn’t move because nothing in Ernie’s pricing is indexed to the size of your route. The other two columns are doing exactly what their billing models are designed to do.

Run the 600-pool row out over a year: Skimmer is roughly $15,500/year, PoolBrain about $3,400/year, Ernie $300/year. Same core job. The spread is entirely about how each vendor decided to meter it.

A fair caveat: at the very small end the gap is narrower, and if you’re a one-truck operator who values a specific Skimmer or PoolBrain feature, the dollars may not be your deciding factor. The model still matters, though — because you’re choosing the slope of your software bill for the next several years, not just this month’s number.

Feature-for-feature, where does the money go?

If Skimmer cost $1,298/month because it did things the others couldn’t, that would be a defensible bill. It mostly doesn’t. The core capabilities line up:

Capability	Skimmer	PoolBrain	Ernie
Route building & tech app	✓	✓	✓
Offline mobile (no-signal logging)	✓	✓	✓
Chemical logging	✓	✓	✓ (+ automatic LSI scoring & alerts)
Invoicing & card payments	✓	✓	✓ (Stripe)
Customer portal	✓	✓	✓
Work orders & inventory	partial	✓	✓
AI route optimization	—	—	✓
AI chemistry / equipment alerts	—	—	✓
Per-pool / per-visit fees	yes	no	no

The two rows in bold are where Ernie is actually doing something the other two aren’t, rather than just charging differently for the same thing. Ernie’s route engine re-sequences automatically when you add a customer mid-week instead of making the dispatcher rebuild the day by hand, its chemistry monitoring flags out-of-range LSI before a callback turns into a green pool, and equipment reminders open work orders on their own. Those run on the included 250 AI operations per month, with $5 top-ups if a big route needs more.

That’s the part worth sitting with: the platform with the lowest bill is also the one carrying the newer automation. Usually you pay up for that. Here you don’t.

So who should buy what?

I’m not going to pretend all three are interchangeable, so here’s the honest routing.

If your route is going to grow, or already has — take Ernie. The flat $24.99/month for up to 5 users with no per-pool fee is the entire argument, and it’s a strong one. The bigger your pool count, the more absurd the comparison gets, and you’re not giving up features to get the lower price — you’re gaining the AI routing and chemistry monitoring on top. Ernie also runs a 60-day trial (30 days no card, plus 30 more if you add one), which is long enough to actually move a route onto it and see. This is the one I’d start with.

If you specifically want Skimmer’s ecosystem and you’re small, Skimmer is a polished, well-known product with a deep integration list, and at a one-truck, low-pool-count size the per-pool fee is survivable. Just go in clear-eyed that the bill is wired to climb with every customer you sign — which is the opposite of what you want your software cost to do.

If you’re committed to a per-technician mental model, PoolBrain is the cleanest version of it — all features included, no per-pool surprise, flat office-user pricing. It’s far cheaper than Skimmer at scale. It’s still billing you precisely when a growing route forces a new hire, where Ernie wouldn’t charge you at all until user six.

The bottom line

The feature checklists are close. The bills are not, and the reason is structural: Skimmer meters your pools, PoolBrain meters your crew, and Ernie meters neither. Over a few years of a growing route, that structural choice swamps every other line item on the comparison sheet.

For most pool service businesses with any intention of growing, Ernie is the one to beat — same core toolkit, newer automation, and a flat bill that a 600-pool route pays the same as a 60-pool route. Price all three against your projected pool count a year out before you sign anything. When you do that math, the per-pool model tends to make the decision for you.

— Cal

Sources: vendor list pricing as published June 2026 — Skimmer pricing, PoolBrain pricing, Ernie pricing; per-pool fee history via PoolDial.