Slipstream ER vs ByteBloc: Two ER-Physician-Built Schedulers Compared

Looking for the full comparison page? See Slipstream ER vs ByteBloc.

ByteBloc and Slipstream ER have something unusual in common: both were created by emergency physicians to fix emergency department scheduling. ByteBloc has been doing it since 1989. Slipstream ER was built in 2026 by a practicing ER physician in Durango, Colorado.

So the question is not whether one of them understands the ED. Both do. The question is what each one does differently, and which fits the way your group works today.

The short version

• ByteBloc has scheduled emergency providers since 1989 and is used in EDs in all 50 US states, Canada, and several other countries. It is sold by 3rd Millennium, Inc.
• Slipstream ER is an ED-only AI scheduler with a published price: Core $49.99/month and Pro $99/month per site, with a 30-day free trial and no credit card.
• ByteBloc does not publish pricing. Its public path is a free demo request. Contact ByteBloc for a quote.
• Both auto-generate schedules. Slipstream ER adds cumulative fairness tracking across months and rule-checked swaps.

What ByteBloc does well

ByteBloc's longevity is real. Its own site says the software was founded over three decades ago by an emergency physician and has adapted to thousands of variations in ER schedules. It notes ByteBloc was rated the top physician scheduling software in a review by ACEP's Section of Computers in Emergency Medicine.

For schedule administrators, ByteBloc lists online schedule posting, automated gathering of on/off and future requests, staging of provider requests with shift balancing, and payroll reports with multiple pay structures. For providers, it offers 24/7 online access to personal schedules, mobile apps for viewing schedules and entering requests, and a "swap-meet" for available shifts.

Payroll depth in particular is a strength. If your group pays across several rate structures, that is worth weighing.

What Slipstream ER does differently

Slipstream ER takes a modern, self-serve approach to the same problem.

• Generated in seconds. Build a full month instantly and regenerate whenever requests change.
• Hard rules never break. Rest-after-nights, approved time-off, forbidden shift types, and the circadian ladder are structurally impossible to violate.
• Fairness that carries over. Nights, weekends, and holidays are tracked as a cumulative running ledger per provider, not a monthly reset.
• Every contract honored. Shift counts, run-length limits, nocturnists, and paired-provider exclusions.
• Full coverage, or a loud warning. If capacity is short, you hear about it before the month starts.
• Physicians, PAs, and NPs in one system, in blended or separate pools.
• Swaps and giveaways, rule-checked, with your approval.
• Calendar sync, a "My Schedule" page, and a plain-English violations report with an audit log.

Side-by-side comparison

ByteBloc wins the longevity and payroll rows. It is the incumbent for a reason.

Pricing

Slipstream ER lists every price on the pricing page. Core is $49.99/month per site for up to 30 providers. Pro is $99/month per site for 30+ providers (up to 50 per site) and adds Emergency Coverage alert broadcasts, a holiday requests module, advanced analytics, priority support, and customization options. A multi-site add-on is available for an extra fee.

ByteBloc does not publish pricing. Contact ByteBloc for a quote.

Who should choose which

Choose ByteBloc if your group has run on it for years, your payroll depends on its pay-structure reports, or you value a vendor with decades of ED history.

Choose Slipstream ER if you want a published monthly price, a trial you can start today without a demo, fairness that is measured across months, and swaps the engine checks for you.

Moving from ByteBloc to Slipstream ER

Slipstream ER does not have a direct ByteBloc importer. Most groups can still be running in an afternoon:

• Export your provider list and load it into Slipstream ER by CSV.
• Use the guided wizard to set up shift types and rules, usually in under an hour.
• Have providers submit requests in the app, then generate and publish the month.

Run it alongside your current schedule during the trial to compare results. Weighing other options too? Read our Slipstream ER vs QGenda comparison.

Frequently asked questions

How much does ByteBloc cost?

ByteBloc does not publish pricing. Contact ByteBloc for a quote. Slipstream ER costs $49.99/month (Core) or $99/month (Pro) per site.

Can I import ByteBloc data into Slipstream ER?

There is no direct ByteBloc importer. You can load providers by CSV, and Slipstream ER imports time-off directly from QGenda and Lightning Bolt.

Does Slipstream ER schedule PAs and NPs?

Yes. Slipstream ER schedules emergency physicians and advanced practice providers in one system, in blended or separate pools.

How does Slipstream ER keep nights and weekends fair?

It keeps a cumulative running ledger of nights, weekends, and holidays for each provider, so fairness carries across months instead of resetting.

Is there a free trial?

Yes. Every plan starts with a 30-day free trial, up to 50 providers, all features unlocked, and no credit card.

See pricing