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Technology · head to head

Envoy vs RescueTime

Envoy logo

Envoy

Technology

A high-performance L7 proxy written in C++ that is configured by an API rather than a config file, and is usually deployed under a control plane.

From
Free
Rated
-
Full reviewWebsite
RescueTime logo

RescueTime

Technology

Take back control of your time

From
$12/month
Rated
-
Full reviewWebsite

The short version

  • Only Envoy has a free tier, so it costs nothing to try first.
  • Each has a real cost: Envoy the configuration surface is very large and hand-written bootstrap YAML runs to hundreds of lines for routing that Nginx expresses in twenty, which is why nearly every production deployment sits under a control plane and inherits that control plane's constraints as well.; RescueTime no free tier since 2023, making it costly for individual experimentation
  • They diverge on capability: Envoy covers xDS dynamic configuration, RescueTime covers Automatic time tracking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Envoy and RescueTime actually diverge.

Attributes where Envoy and RescueTime differ
AttributeEnvoyRescueTime
Starting priceFree$12/month
Pricing modelopen-sourceUnknown
Free tierYesNo
PlatformsWebWindows, macOS, Android, Web
FoundedUnknown2006

Identical on both: user rating (Not yet rated), category (Technology).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Envoy

  • xDS dynamic configuration
  • Protocol breadth
  • Filter chain architecture
  • Observability by default
  • Outlier detection
  • Traffic shaping
  • mTLS termination and origination
  • Hot restart

Only in RescueTime

  • Automatic time tracking
  • Productivity scoring
  • Detailed categorization
  • FocusTime blocking
  • Goal setting
  • Alerts & notifications
  • Offline time entry
  • API access

What people use each for

The jobs each tool is most often brought in to do.

Envoy

  • Acting as the data plane under a service mesh or Gateway API implementation, which is how the overwhelming majority of deployments use itnot RescueTime
  • An edge or API gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxyingnot RescueTime
  • Migrating traffic between service versions or between a monolith and its replacement, using weighted splits and shadow trafficnot RescueTime
  • Standardising observability across a polyglot estate, so that latency, error rates and tracing look the same regardless of the language a service is written innot RescueTime

RescueTime

  • Personal productivity trackingnot Envoy
  • Time auditnot Envoy
  • Focus improvementnot Envoy
  • Work-life balancenot Envoy
  • Team productivity analysisnot Envoy

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Envoy

  • The configuration surface is very large and hand-written bootstrap YAML runs to hundreds of lines for routing that Nginx expresses in twenty, which is why nearly every production deployment sits under a control plane and inherits that control plane's constraints as well.
  • xDS is the real API and it is not stable in the comfortable sense; the v2 API set was removed outright, resource types continue to be deprecated, and your control plane and Envoy binaries have to be upgraded roughly in step or the proxies stop accepting configuration.
  • Extending it properly means writing a C++ filter and building and maintaining your own Envoy binary; the alternatives are Lua, which adds per-request overhead, and proxy-wasm, whose ABI has remained effectively experimental for years with a real performance cost.
  • At sidecar density the per-proxy memory and CPU footprint is a measurable share of cluster capacity, since thousands of workloads each carry a full proxy, and this is precisely the cost that has pushed mesh projects towards node-level or ambient architectures.
  • There is no single vendor selling support for Envoy itself; you get the community plus control-plane vendors such as Solo.io and Tetrate, so an Envoy-level production bug is your own engineers in a C++ codebase unless a support contract happens to cover it.
  • Diagnosing why a request got a particular response involves reading config dumps, the stats endpoint and the RESPONSE_FLAGS codes in access logs rather than a readable error, which is a specific skill you must hire or spend months growing.

RescueTime

  • No free tier since 2023, making it costly for individual experimentation
  • Limited iOS support compared to competitors that offer full mobile app access
  • Requires integration via categories and rules rather than direct app detection on some platforms

Pricing, plan by plan

Envoy

Free

No published plan breakdown. See the Envoy review.

RescueTime

$12/month
  • Standard$12/month
    • Automatic time tracking
    • Focus Time
    • Idle time monitoring
  • Team$6/month
    • All Standard features
    • Team analytics
    • Cross-device tracking

Which should you pick?

Choose Envoy if

  • You need xds dynamic configuration.
  • You want to start without paying.
  • You also want protocol breadth.
Envoy review

Choose RescueTime if

  • You need automatic time tracking.
  • You work on Windows, macOS, Android, Web.
  • You also want productivity scoring.
RescueTime review

Questions people ask

Is Envoy or RescueTime better?
Neither clearly leads. Envoy starts at Free and RescueTime at $12/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Envoy or RescueTime?
Envoy has a free tier; the other does not. Paid plans start at Free for Envoy and $12/month for RescueTime.
Does Envoy or RescueTime run on more platforms?
Envoy runs on Web. RescueTime runs on Windows, macOS, Android, Web.
Can I use Envoy for free?
Yes. Envoy has a free tier, so you can try it without paying. RescueTime starts at $12/month.
What is Envoy best used for?
Envoy is most often used for acting as the data plane under a service mesh or gateway api implementation, which is how the overwhelming majority of deployments use it, an edge or api gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxying, migrating traffic between service versions or between a monolith and its replacement, using weighted splits and shadow traffic, standardising observability across a polyglot estate, so that latency, error rates and tracing look the same regardless of the language a service is written in. Of those, acting as the data plane under a service mesh or gateway api implementation, which is how the overwhelming majority of deployments use it and an edge or api gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxying are not what RescueTime is typically brought in for.
What can Envoy do that RescueTime cannot?
Envoy covers xDS dynamic configuration, Protocol breadth, Filter chain architecture, Observability by default. RescueTime covers Automatic time tracking, Productivity scoring, Detailed categorization, FocusTime blocking.

Answered from the vendors’ own pages

Envoy: Should I run Envoy on its own, or under a control plane?

Almost always under one. Directly authoring xDS or static bootstrap configuration is viable for a handful of routes and becomes unmanageable beyond that. Envoy Gateway, Istio, Contour, Gloo and Consul all exist to generate that configuration for you.

RescueTime: Does RescueTime still have a free tier?

No. RescueTime discontinued its free tier in 2023. The service now requires a paid subscription starting at $12 per month or $78 per year.

Source
Envoy: How does it compare with Nginx or HAProxy?

Envoy is dynamically configured over an API and instrumented far more heavily; Nginx and HAProxy are faster to configure and lighter for straightforward reverse proxying. If you never need to change routing without a reload, Envoy is more machinery than the problem requires.

RescueTime: What platforms does RescueTime support?

RescueTime supports Windows, macOS, Android, and web. iOS support is limited to passive features like calendar sync and mobile summary emails.

Source
Envoy: What does it cost?

Nothing to licence; it is Apache 2.0 and there is no paid edition. The cost is engineering time and, for most organisations, a commercial control plane or cloud service that packages it.

RescueTime: What are the key productivity features in RescueTime?

RescueTime offers automatic time tracking, Focus Time for blocking distractions, idle time monitoring, goal-setting with reminders, and in 2026 adds AI-Based Focus Sessions with real-time alerts to detect poor focus patterns.

Source
Envoy: Can I write extensions without C++?

You can write Lua filters or proxy-wasm modules in Rust, Go, C++ or AssemblyScript. Both carry per-request overhead compared with a native filter, and the Wasm path has been slower to stabilise than the project originally projected.

RescueTime: Is there a team plan for RescueTime?

Yes. The team plan costs $6 per user per month when billed annually, with a minimum of 3 users required.

Source
Envoy: Is it a CNCF project?

Yes, it is a graduated CNCF project licensed under Apache 2.0, which means the trademark and governance sit with the foundation rather than with Lyft or any vendor.

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