Comparison

Primary vs PeriCal

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Primary

This app offers AI-powered, physician-designed health programs for personalized daily action plans. It tracks your progress and biomarkers, consolidating health data for a 360-degree wellness view. Connect wearables and upload labs to receive tailored guidance for various health goals.

Highlights
  • AI-powered personalized health programs
  • Physician-designed daily action plans
  • Biomarker and adherence tracking
  • Consolidated health data profile
  • Integration with Apple Health and wearables
  • Lab result and medication history storage
  • Menstrual cycle monitoring
Features
Read full description

The fitness program that fits you. Primary builds a workout and meal plan around your body, your goals, the equipment you have and the time you've got, then adjusts it every day from how your training actually went. GUIDED, SET BY SET Every session is laid out for you: each exercise with a demo, the sets, reps and load, and a rest timer between sets. Log as you go and move on. WEIGHT GOES UP WHEN YOU'RE READY After each exercise, tell Primary how it felt: easy, about right, hard or painful. Loads rise when you're ready, and each muscle gets its recovery time before it's trained hard again. WORKS AROUND INJURIES Sore shoulder or knee? Primary swaps in exercises that train the same muscles while sparing what hurts. GYM OR HOME Your plan uses the equipment you actually have, from a full gym to a pair of dumbbells in the living room, and fits the time you have that day. MEALS THAT MATCH YOUR WORKOUTS Meal guidance in the cuisine you already eat, timed around your sessions, with protein targets and supplement reminders. CONNECTS TO YOUR HEALTH DATA Link Apple Health and supported wearables. Sleep, heart rate and activity feed into each day's plan, and your progress, lab results and trends live in one place. MORE THAN FITNESS Primary also offers programs designed by physicians and health experts for metabolic health, digestive wellness, sleep, healthy ageing and women's health. If your doctor uses Primary, join their program with an invite code. HOW IT WORKS 1. Tell Primary your goal, experience, equipment and schedule. 2. Get today's session and meals, ready to follow. 3. Train, log your sets and say how each one felt. 4. Your plan adapts overnight for tomorrow. FREE FOR YOUR FIRST WEEK Start with a one-week free trial, then continue with a monthly subscription. The price is shown in the app before you confirm. Payment is charged to your Apple Account when you confirm the purchase after the trial. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel it in your App Store account settings. Important: Primary's programs and guidance are not a substitute for professional medical advice, diagnosis or treatment. Check with your doctor before starting a new exercise program, especially if you have a medical condition or injury. Terms of Use: https://78health.com/terms_of_use.html Privacy Policy: https://78health.com/privacy_policy.html

About

PeriCal

Features
Read full description

PeriCal is a very simple period calendar which allows you to estimate your next period for the next months and plan accordingly.

Screenshots

Primary4 screens
PeriCal3 screens

Verdict

The call

The clearest difference is in-app purchases: PeriCal at none against Primary's 7. PeriCal also leads on device support (3 vs 1). Primary's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Primary sells 7 in-app purchases, starting at $9.99 per month. PeriCal asks for nothing beyond the download.

UpkeepUpdate frequency

Primary ships an update every 9 days, PeriCal every 3 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 7 level
Primary versus PeriCal: the parameters behind the verdict, then further details
ParameterPrimaryPeriCal
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size197 MB28 MB
Age rating12+9+
Developer78Health CorpMichelle Le Grand

In-app purchases

7 purchases

Primary

Subscriptions3
  • Primary Plus Monthly Plan1 Month trial$9.991 Month
  • Primary Program Monthly$14.991 Month
  • Primary Plus1 Month trial$59.991 Year
One-time4
  • Health program Tier 3$14.99
  • Health program Tier 1$29.99
  • Health program Tier 2$49.99
Show 1 more
  • Health program Tier 4$99.99
None

PeriCal

No in-app purchases

Questions

Is Primary free?
Primary is free to download, with in-app purchases available.
Is PeriCal free?
PeriCal is free to download, with no in-app purchases.
Do Primary or PeriCal have ads?
Neither Primary nor PeriCal shows ads.
Which is updated more often, Primary or PeriCal?
Primary ships an update every 9 days, and PeriCal every 3 weeks. Most recently, Primary was updated on October 24, 2026 and PeriCal on October 19, 2026.

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