Comparison

Brim vs Creatine Tank

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

Head to head
About

Brim

Features
Read full description

Creatine is not a painkiller. It does not work on the day you take it โ€” 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 โ€” which means a missed day costs you exactly what it costs you, no more. A PLAN BUILT FROM YOUR BODY โ€ข A daily dose calculated from your body weight, not a flat scoop line โ€ข Standard or loading, with the real trade-off between them spelled out โ€ข A projected curve to the day you reach full โ€ข 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 โ€” Established, Emerging, Early or Myth โ€” so you can tell a settled question from an open one instead of guessing. QUIET BY DESIGN โ€ข A Home Screen widget with today's number โ€ข Apple Health reads your weight so the dose stays right as you change; nothing is written back โ€ข No account, no sign-up, no email โ€ข 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 โ€” 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 โ€บ Apple Account โ€บ Subscriptions. Terms of Use: https://brim-legal.web.app/terms Privacy Policy: https://brim-legal.web.app/privacy

About

Creatine Tank

Features
Read full description

Creatine Tank turns your creatine habit into something you can see: a tank that fills up as you keep going. You take it every day, but you never really know how full you are. You skip one day and wonder if you've undone everything. Creatine Tank answers both with one number and one picture. โ–  One or two taps to log Tap 5g, tap Log it. No number keyboard, ever. Save the products you use and pick them with a single tap. Took it a while ago? "30 min ago" and "1 hr ago" are right there. โ–  See your estimated saturation as a tank From your logged intake, body weight, diet and the days since you started, Creatine Tank estimates how full your creatine stores are and shows it as a tank from 0 to 100%. The liquid rises a little every time you log. - Six phases: Starting, Building, Near Full, Saturated, Maintenance, Paused - "Estimated time to full" tells you what's ahead - Missing one day barely moves the needle. Take a break and it comes back gradually โ–  Look back on what you've built The calendar shows at a glance which days you hit your goal, which were partial, and which you missed. Analysis charts your saturation trend and the breakdown of what you took. โ–  Intake plans Switch between Standard, Loading and Maintenance and the suggested amount adjusts to your body weight. You always know which phase you're in and roughly when you'll reach full. โ–  Widgets Keep your saturation and today's intake on your Home Screen and Lock Screen. [ Creatine Tank Pro (one-time purchase) ] Pay once and everything below unlocks. There is no subscription and nothing auto-renews. - Apple Watch app - log +3g or +5g from your wrist - Large widget, plus a widget with +3g / +5g buttons - 90-day analysis - Stats tab - this month's summary and how it lines up with your training - Set your own daily target - Save unlimited products - CSV export Logging, Home, Calendar and the 7- and 30-day analysis stay free forever. [ Before you start ] Creatine Tank is not a medical device. The "estimated saturation" it shows is calculated from what you log - it is not a measurement of the creatine in your body. If you have any concerns about supplements or your health, or if you have a medical condition or take medication, please talk to a doctor or pharmacist. What you log stays on your device. It is never sent to the developer or any third party. Health is only read for body weight and workouts - nothing is ever written back.

Screenshots

Brim4 screens
Creatine Tank4 screens

Verdict

The call

The clearest difference is update cadence: Brim at every 4 days against Creatine Tank's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Brim sells 5 in-app purchases, starting at $4.99 per 7 days and Creatine Tank sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Brim ships an update every 4 days, Creatine Tank fortnightly. Both last shipped on October 31, 2026.

Scorecard1 real difference ยท 5 level
Brim versus Creatine Tank: the parameters behind the verdict, then further details
ParameterBrimCreatine Tank
PriceFreeFree
Update frequencyEvery 4 days โ€” betterFortnightly
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, Apple Watch โ€” better
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size31 MB7 MB
Age rating12+4+
DeveloperAnastassiya Shugaleykazunari aoki

In-app purchases

5 purchases

Brim

Subscriptions5
  • Brim Pro (Weekly)$4.997 Days
  • Brim Pro Monthly3 Days trial$4.991 Month
  • Brim Pro Monthly1 Month trial$4.991 Month
Show 2 more
  • Brim Pro (Yearly)$29.991 Year
  • Brim Pro (Welcome Offer)1 Year trial$29.991 Year
1 purchases

Creatine Tank

One-time1
  • Creatine Tank Pro$5.99

Questions

Is Brim free?
Brim is free to download, with in-app purchases available.
Is Creatine Tank free?
Creatine Tank is free to download, with in-app purchases available.
Do Brim or Creatine Tank have ads?
Neither Brim nor Creatine Tank shows ads.
Which is updated more often, Brim or Creatine Tank?
Brim ships an update every 4 days, and Creatine Tank fortnightly. Most recently, Brim was updated on October 31, 2026 and Creatine Tank on October 31, 2026.

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