Comparison

Longevity Arc vs Brim

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

Head to head
About

Longevity Arc

Features
Read full description

Longevity Arc turns your Apple Health data into five clear longevity signals. Instead of digging through scattered charts, you can see HRV, fitness, sleep, gait, and cardiac load together in one simple dashboard designed to help you understand how your body is trending over time. Built for people who care about healthspan, recovery, and long-term performance, Longevity Arc helps you spot changes faster and focus on the metrics that matter most. The app is designed to feel simple at a glance while still giving you useful depth when you want to explore trends and patterns. What you can do in Longevity Arc: - Track five science-inspired longevity signals from Apple Health in one place. - Review your HRV, sleep, fitness, gait, and cardiac-load trends without jumping between different screens. - Get a clearer picture of how daily habits may affect your long-term trajectory. - Use a private, HealthKit-powered experience built around your own data. Why people use Longevity Arc: - Apple Health already contains valuable signals, but they are often fragmented and hard to interpret quickly. - Longevity Arc brings those signals together into a more readable view so you can check your status in seconds. - The focus is not noise or endless scores - it is a cleaner way to monitor meaningful change over time. Privacy and data: - Longevity Arc works with your Apple Health data. - You stay focused on your own signals, trends, and progress. Ideal for: - Biohackers tracking recovery and resilience. - Health-conscious users who want a simpler Apple Health dashboard. - Founders, athletes, and everyday users trying to balance stress, fitness, and sleep over time. Privacy Policy: https://longevityarc.app/privacy Terms of Use: https://longevityarc.app/terms

About

Brim

Features
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Creatine is not a painkiller. It does not work on the day you take it — it works by saturation. Your muscle stores fill up over weeks and drain again when you stop. Brim turns that into one number you can actually watch. YOUR SATURATION, NOT A STREAK The number rises on the days you dose and falls on the days you miss, by roughly one to two percent a day. It is not a counter that resets to zero to punish you. It is an estimate of where your muscle creatine actually stands, from a model fitted to the published research — which means a missed day costs you exactly what it costs you, no more. A PLAN BUILT FROM YOUR BODY • A daily dose calculated from your body weight, not a flat scoop line • Standard or loading, with the real trade-off between them spelled out • A projected curve to the day you reach full • Reminders timed to when you actually take it SEE WHAT A BREAK COSTS Progress draws your saturation over time, tells you what a fortnight off would do, and counts the days back to full. Miss a day and you will see it move. That is the entire point. EVIDENCE, GRADED The library answers what people actually ask. Is loading necessary. Does creatine damage your kidneys. Does it cause hair loss. Is it different for women. Is it worth it after fifty. Every article carries a grade — Established, Emerging, Early or Myth — so you can tell a settled question from an open one instead of guessing. QUIET BY DESIGN • A Home Screen widget with today's number • Apple Health reads your weight so the dose stays right as you change; nothing is written back • No account, no sign-up, no email • Your log lives on your iPhone Brim Pro unlocks the full history, the forecast, protocol switching and the complete library. Logging your dose is free, always — a tracker that locks the tracking is not a tracker. Brim Pro is an auto-renewing subscription, offered yearly (with a free trial) or weekly. The price for your region is shown in the app before you buy. Payment is charged to your Apple Account at confirmation of purchase, and the subscription renews automatically unless you turn it off at least 24 hours before the end of the current period. Manage or cancel in Settings › Apple Account › Subscriptions. Terms of Use: https://brim-legal.web.app/terms Privacy Policy: https://brim-legal.web.app/privacy

Screenshots

Longevity Arc4 screens
Brim4 screens

Verdict

The call

The clearest difference is device support: Longevity Arc at 3 against Brim's 1. Longevity Arc also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Longevity Arc sells 2 in-app purchases, starting at $2.99 per month and Brim sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Longevity Arc ships an update every 3 days, Brim every 2 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Longevity Arc versus Brim: the parameters behind the verdict, then further details
ParameterLongevity ArcBrim
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size40 MB31 MB
Age rating4+12+
DeveloperRadoslaw JozefowiczAnastassiya Shugaley

In-app purchases

2 purchases

Longevity Arc

Subscriptions1
  • Monthly Pro3 Days trial$2.991 Month
One-time1
  • Lifetime Pro$9.99
3 purchases

Brim

Subscriptions3
  • Brim Pro (Weekly)3 Days trial$4.997 Days
  • Brim Pro (Yearly)3 Days trial$29.991 Year
  • Brim Pro (Welcome Offer)1 Year trial$29.991 Year

Questions

Is Longevity Arc free?
Longevity Arc is free to download, with in-app purchases available.
Is Brim free?
Brim is free to download, with in-app purchases available.
Do Longevity Arc or Brim have ads?
Neither Longevity Arc nor Brim shows ads.
Which is updated more often, Longevity Arc or Brim?
Longevity Arc ships an update every 3 days, and Brim every 2 days. Most recently, Longevity Arc was updated on October 7, 2026 and Brim on October 8, 2026.

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