RescueTime tracks where your time goes. EMRALD tracks what that time costs you. They answer different questions, and you can use both. RescueTime runs quietly in the background and scores your day by category. EMRALD asks you, in ten seconds after each work session, what that session actually took out of you.
If you're comparing these two, you've probably already used RescueTime for a while and started wondering why a "productive" week can still leave you flat.
RescueTime is an automatic time tracker. It runs in the background, no timers to start or stop, and logs every app and website you touch. From that log it calculates a Productivity Pulse: a 0 to 100 score built from five productivity levels you assign to your own categories, from Very Distracting (0%) to Very Productive (100%), weighted by how much time landed in each. The company reports an average Pulse of 67% across its whole user base.
On top of the Pulse, RescueTime offers Focus Sessions and alerts to block distracting sites during deep work, and, on the Solo+ and Team+ tiers, Timesheets for project billing and invoicing. Pricing runs from Solo Focus at $7/mo ($84/yr) up to Team+ at $16/user/mo, all with a 14-day trial. The free Lite tier gives basic tracking, two weeks of history, one goal, and a weekly summary.
The company has real scale behind it: three billion hours logged, two million-plus users, fifteen-plus years in business, testimonials from Alexis Ohanian and Neil Patel among others. For anyone who wants a low-friction answer to "where did my day actually go," this works, and it works automatically. No manual logging, no setup beyond installing it.
To clarify, the Pulse measures category compliance. It tells you whether your time landed in productive buckets, but it doesn't measure how hard any of that work felt. Two tasks can both score 100% Very Productive on the Pulse and cost you two entirely different amounts to finish. RescueTime has no way to see that difference, because it wasn't built to.
RescueTime's own homepage uses the phrase "creative energy," but that's copy about where your energy goes online and offline, not a feature that measures it. There's no energy metric in the product. It's marketing language sitting next to a time log.
EMRALD isn't a time tracker and doesn't try to compete on that ground. It's a measurement layer: the effort ledger for the tools you already use. You create a project and give it an effort level at the start (E1 to E4, four fixed levels tied to a percentage of your daily work time). You start a session when you begin your work, and stop it when you're done. Stopping triggers a short effort receipt, five questions, roughly ten to fifteen seconds, and that receipt is the input EMRALD uses to build a personally calibrated model of what your work costs you over time.
Your session data feeds twenty metrics that sit across four categories: Effort, Calibration, Productivity, and Energy. The free tier includes the first eight of those twenty, plus burnout warnings. The Burnout Monitor itself is free on every plan and never gets locked behind a paywall; it runs the same math whether you're paying or not. Pro, at $5/mo or $42/yr, unlocks the remaining twelve metrics, custom effort levels beyond the built-in four, and an expanded insight engine that helps you recognize the patterns those twenty metrics are actually showing you.
The Obsidian plugin version of EMRALD only sees session data, never the content of your notes or your work. It is MIT-licensed and open source; you can read the exact code that runs in your vault. The web app is a separate, private codebase. Digests come weekly on the free tier, with daily and monthly added on Pro, all inside the app.
The core question EMRALD answers is simple: what did that time actually cost me?
Because these two tools are answering different questions, not competing on the same one, the best way to compare them is with a list of questions rather than a feature list:
| Question | RescueTime | EMRALD |
|---|---|---|
| Where did my time go? | Automatic tracking of apps and websites | — |
| Was I in productive categories? | Productivity Pulse, 0 to 100 | — |
| What did my work cost me in effort? | — | Calibrated effort rating, E1 to E4 |
| Am I heading toward burnout? | Focus guardrails only | Burnout Monitor, free on every plan |
| How is my recovery trending? | — | Recovery data under the Energy category |
| What's my flow quality? | Surface signal via Focus Sessions | Flow tracking and scoring |
| What does it sit inside? | Desktop app: Mac, Windows, Linux, plus iOS | Obsidian plugin plus web app (roadmap: more integrations) |
From the chart above, it's clear that the tools are aiming at different targets. RescueTime answers the "what" of your day: where the hours went, whether they landed somewhere you labeled useful. EMRALD answers the "cost" of your day: what running that schedule actually took out of you. Same day, two separate ledgers.
If you genuinely don't know where your hours go. If your day feels like it evaporates and you need an honest, automatic log of what apps and sites actually ate the time, RescueTime does that without asking anything of you. The Focus Sessions are a real tool for protecting a work block once you know you need one.
If the "where did my time go" question is already answered and it isn't the problem anymore. Some weeks look perfect on paper: every hour landed in a productive category, every Pulse score high, and you still end Friday running on empty with no idea why. That's a measurement gap the Pulse structurally cannot close, because it was built to score categories, not felt cost.
If you want the complete picture. RescueTime tells you what you did with your day. EMRALD tells you what doing it cost you. Run RescueTime in the background the way it's designed to run, log your effort receipts in EMRALD as you go, and compare the two at the end of the week. You'll see something neither one shows alone: the days that scored identically on the Pulse but weren't identical in what they took out of you.
A productivity score can push you straight into burnout while telling you everything's fine, because "fine" on that score just means you spent time in the right buckets. An effort ledger paces you instead, because it's tracking the thing the score never asked about: what the work cost.
RescueTime and EMRALD aren't rivals for the same slot on your desktop. One is a log of where your hours went. The other is a record of what those hours took. You can run both without either one stepping on the other's job.
As a final note on the measured workload itself: RescueTime's Pulse is designed to be actionable for spending more time in productive categories. That's genuinely useful advice as far as it goes. But it can only ever tell you to rearrange your categories, never to simply do less, because "do less" isn't a category-compliance answer. EMRALD doesn't have that constraint. Some weeks the honest read from EMRALD is "this cost more than you had; rest." That answer is available because EMRALD was built to measure cost, not to optimize a score.
Want EMRALD inside RescueTime? Integration is on the roadmap. Tell us which connector you'd actually use, and it moves up the list.
Tell us"Creative energy" appears on RescueTime's homepage as copy, describing where your energy goes online and offline. There's no calibrated energy metric behind it. EMRALD tracks Energy as one of its four metric categories, with session-level data on how effort accumulates and recovers.
No. RescueTime has Focus Sessions and alerts that help you avoid distractions, but there's no burnout risk detection, no cumulative load tracking, and no recovery measurement in the product. EMRALD's Burnout Monitor watches sustained-effort patterns across its metrics and is free on every plan.
No. They answer different questions. RescueTime automatically logs where your hours went. EMRALD measures what those hours cost you in effort. Many people run both and compare the two records weekly.
The Pulse measures category compliance: whether your time landed in buckets you labeled productive. It's automatic. EMRALD's effort tracking measures felt cost: how hard the work actually was, calibrated to you personally over time. Two tasks can score identically on the Pulse and cost you completely different amounts to finish.
If you don't know where your time goes, RescueTime is a genuinely good answer, and the free Lite tier covers basic tracking with two weeks of history. But it only measures where time went. If the question you actually need answered is what your work is costing you, a category score can't answer it.
Run RescueTime in the background as designed. Log effort receipts in EMRALD when you finish focused blocks. At week's end, compare: RescueTime shows what you did, EMRALD shows what it took. Using both? Let us know if you'd want a direct RescueTime connector. It helps us prioritize what to build next.
