Pool service professionals are skilled tradespeople who manage complex chemistry systems, diagnose equipment failures, and maintain the water quality of hundreds of pools. The software tools available to them in the field have not kept pace with what the work actually requires. Expensive scheduling platforms built for office management. Basic apps that require a live internet connection at the pool. Clipboards. SplashLens was built because we thought these professionals deserved better — and because we believed that "better" should not cost $100/month.
When we talked to pool service technicians about how they document service visits, we found a consistent pattern:
The gap was clear: there was no professional-grade, purpose-built field documentation tool that a solo pool service technician could use daily without paying a monthly subscription. Every tool in the market either charged significant ongoing fees or was not built for what happens at the pool.
We committed to three non-negotiable principles when designing SplashLens:
Pool service happens in places with no cell signal. Gated communities with dead zones. Rural properties. Areas with spotty coverage from any carrier. We decided that an app that requires internet connectivity to log a service visit is not a real field tool — it is a liability. Every feature in SplashLens works without any internet connection. Data lives on the device first. Connectivity is a bonus, not a requirement.
The economics of a solo pool service operation do not support $50–$150/month in software subscriptions for every category of tool. A technician running 50 residential accounts might gross $8,000/month. Asking that person to pay $100/month for a field documentation tool is a different conversation than asking an enterprise facility operator. We decided that the baseline field documentation functionality would be free, permanently, for every professional who needs it.
We may build optional premium features in the future. The core service logging, chemistry tracking, account management, and equipment documentation will remain free. We will be transparent about any changes.
SplashLens is not a scheduling app or a billing platform that also has chemistry logging. It is a field documentation tool built around the specific things that happen at a pool: testing water, recording results, logging chemical additions, noting equipment observations, and building a service history that protects the technician and informs future visits.
The two features we built first — before anything else — were the offline service log and the account chemistry history view. Everything else in the app exists to make those two things better. If you can log a test result without internet and see the last three months of chemistry for that pool in five seconds, SplashLens has done its job.
When we built PartSnap — the camera-based equipment identification feature — we realized it represented something larger than a convenient lookup tool. It was the first step toward a genuinely intelligent field assistant: one that not only stores what you record but actively helps you interpret what you are seeing.
A technician pointing a camera at unfamiliar equipment and getting a model identification, age estimate, and service specifications in seconds is not just saving time. They are accessing institutional knowledge that previously required years of experience to accumulate. PartSnap democratizes equipment knowledge — the technician on their third month in the trade has access to the same equipment information as the twenty-year veteran.
This is the direction SplashLens is heading. Not just a log, but an intelligent field companion that compounds the expertise of the professionals using it.
The SLAM tracker was built after consistently hearing from technicians that the breakpoint chlorination calculation — 10x combined chlorine — was either being done wrong or not being done at all during algae remediation attempts. The tracker walks you through the process: calculate your shock target based on CYA, log each day's FC, track the overnight loss test, and confirm when the pool has passed.
This is the pattern we follow for chemistry workflows: identify where experienced professionals consistently make errors or skip steps, then build a guided tool that prevents those errors. The expertise is in the workflow design. The technician still makes every decision — the app ensures they have the right information to make it correctly.
The AI Scanner — a full vision-based equipment analysis tool that identifies not just what equipment you are looking at but what service indicators are visible — is in active development. Chemistry trend alerts, commercial documentation exports, and client-facing service reports are on the roadmap. The goal is a field tool that compounds in value the longer you use it, as the service history it accumulates becomes a resource in itself.
The lens on your pool. That is what we are building.
Install it in 30 seconds from your phone's browser. Works offline immediately. Log your first service visit before you finish reading this sentence. Free, always. No credit card needed.
Open SplashLens Free →SplashLens was built by a small team with backgrounds in software development and pool service technology. We saw that pool service professionals had access to expensive software platforms built for large operations or basic paper-and-clipboard tools, with nothing in between that worked reliably in the field and cost nothing. SplashLens was built to fill that gap.
SplashLens is currently funded by the team that built it. We are building towards a sustainable model that may include optional premium features in the future — but the core field documentation functionality that technicians use daily will remain free. We will be transparent when and if that changes.
Three things: it is free, it works offline-first, and it was designed specifically around what happens at the pool rather than around billing and scheduling. Most pool service software is built for the office. SplashLens is built for the technician at the pool, with zero signal, who needs to log a test result and move to the next stop.
SplashLens is a progressive web app. Open poolens.pages.dev in your phone's browser. You will see a prompt to 'Add to Home Screen' — tap it. The app installs like a native app and appears on your home screen. No app store required. Works offline immediately after installation.