How to Choose a Session Replay Tool: Criteria That Matter

Searching for "best session replay tools" gets you lists ranked by whoever wrote them. Most rank by feature count. That is a poor way to choose, because the features you pay for are rarely the ones that decide whether the tool gets used.

This post skips the ranking. It gives you the criteria that separate tools in practice, what to ask during a trial, and how to think about the choice between a standalone replay product and replay inside a wider analytics platform. We are an analytics vendor with replay on our Pro plan, so we have a stake. We will say where that shapes our view.

Start with the job

Different teams buy replay for different reasons, and the reasons point at different tools.

• Support and QA want to find the session behind a bug report. They need search by user or error, and fast playback.
• Product and design want to see why a step in a flow underperforms. They need to jump from a funnel or metric straight to examples.
• Growth wants to see how visitors from a campaign behave. They need filters by source, device and country.
• Engineering wants console and network context next to the recording.

Write down which one is yours. If you cannot name the job, you will pay for a tool that nobody opens after month two.

The criteria that matter

1. How you get from a question to a session

The slowest part of replay is not watching. It is finding the right session among thousands. Ask in the trial: starting from a funnel drop, an error, a page or a campaign, how many clicks until I am watching a relevant session? A tool that makes you browse a flat list of recordings is a tool you will stop using.

This is the strongest argument for replay inside an analytics product. In OnyxMetric the sessions, funnels, errors and replay views share one set of filters, so a question you asked in a report is already scoped when you look for examples.

2. What the recorder captures, and what it hides

Look at the default masking. Good tools mask password fields and sensitive inputs without configuration, and let you extend masking by element or selector. Test it yourself: fill in a fake card number and a fake address on your own site, then watch the replay. Do not rely on the vendor's description.

Also ask what the recorder cannot do. Cross-origin iframes, canvas, shadow DOM and some web fonts are common weak spots across the category. If your checkout is a third-party embedded frame, the replay may show an empty box where the interesting part happens.

3. Weight on the page

A recorder is extra JavaScript running on every visit. Measure it. Load a representative page with and without the script, and compare Largest Contentful Paint and Interaction to Next Paint. A heavy recorder can quietly damage the very metrics you are trying to improve. Check how it batches uploads too; constant small network calls are noticeable on weak mobile connections.

4. Sampling and retention

Some plans record a percentage of sessions, some record all and drop old ones quickly. Neither is wrong, but you should know which one you are buying. If you need to see a rare bug, sampling can hide it. If you keep everything forever, ask what that does to cost and to your data-retention obligations.

5. Privacy posture and consent

Replay records behavior, so privacy is a procurement question, not a checkbox. Ask where data is stored, who can watch, how deletion works, and how the vendor handles consent requirements in your market. Lean toward tools that make masking the default rather than something you opt into.

6. Pricing model

Replay pricing generally takes one of two shapes: per recorded session, or a flat tier that includes replay. Per-session pricing is cheap when you start and unpredictable when you grow. A traffic spike becomes a bill spike. Flat tiers are predictable but you pay whether you watch or not. Decide which risk you prefer before you compare numbers.

For reference, OnyxMetric prices per site per month. Replay is included on the Pro plan at $299 a month, or ten months' price for a year if you pay yearly. You do not pay by recording count.

7. Sharing and collaboration

A replay is only useful if the person who can fix the problem sees it. Check that you can link straight to a session, that links work for teammates with the right permissions, and that you can attach a moment to a ticket. Tools that lock recordings behind individual logins slow teams down.

Standalone replay vs replay inside analytics

This is the real fork.

Standalone replay tools go deep on the recording experience: richer developer context, heatmaps, frustration signals, annotations. If your whole job is investigating front-end behavior, depth matters, and a dedicated tool can be worth it. The cost is a second script on your pages, a second set of filters, and a second place where numbers may not match your analytics.

Replay inside an analytics platform goes shallower on recording features but wins on connection. You move from a report to a session without leaving. Your numbers come from one source. You have one script, one consent decision and one bill.

Our view: for most small and mid-sized product teams, the connection matters more than the extra depth. If you find you have outgrown it, the standalone tool will be easy to justify at that point because you will know exactly what you are missing.

A trial plan that tells you the truth

Run every candidate through the same exercise for a week:

1. Install on your real site, not a demo page.
2. Pick one known problem, such as a funnel step with a bad drop.
3. Time how long it takes a teammate who has never used the tool to find three relevant sessions.
4. Fill in test data in sensitive fields and confirm they are masked.
5. Compare page speed with the script on and off.
6. Check what happens to the bill if traffic doubles.

The tool that wins this exercise is rarely the one with the longest feature page.

What to skip

Ignore feature checklists that count things like "unlimited annotations." Ignore "AI summary of sessions" unless you test it on your own recordings and the summaries hold up. Ignore any ranking that does not tell you its methodology.

Choose on the job, the path from question to session, the masking, the page weight and the pricing model. Everything else is secondary, and you can change your mind later because a replay tool is one of the cheaper things to swap.