Fast Web Biorhythm Charts
Provides fast, free, bookmarkable biorhythm charts. Optional cookies allows daily viewing of chart without the re-entering of birthdays. Customize the chart size and color for easiest viewing/printing.

Friends and Lovers
Offers daily compatibility checks. The chart provides you and your partner's "balanced", "alert", and "critical" indications side by side for each day of the chart period.

Hiatus Software
Features the Mac OS program Biorhythms9, with screenshots, features list and ordering information.

Life Cycles Matrix(R) System and Synchronicity
Working with birthdays and repeating life cycles for better insight in your life evolution in relationship, job, business, career, study, household or child caring.

My Biorhythms
Biorhythm program for sale, with several report formats, charts and tools. Calculate compatibility quotients, export to other programs, and calendar.

Queensoft Software Development
Developer of shareware and freeware applications and games, including a biorhythm charting program. Software overviews, screenshots, and downloads.

Retro Software Designs
General information and online plotting program.

Sandman's Biorhythm
Get a quick biorhythm chart for the current period. Fast chart generation

Travel Biorhythm
If you're planning a trip, you can calculate your biorhythm here. The calculation will also show you how many days you have lived.

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