Comparison

BuffMeter vs ColdKeeper

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

Head to head
About

BuffMeter

This app uses AI to analyze your physique from a photo, providing detailed scores for muscle groups and an overall fitness level. It also generates AI-powered visualizations of your potential future body based on your goals and offers personalized daily targets for health habits.

Highlights
  • AI physique analysis from photos
  • Individual muscle group scoring
  • AI-generated future physique visualization
  • Personalized daily health targets
  • Progress charts for body fat and weight
  • Integration with Apple Health
Features
Read full description

You want to look better in the mirror. But you can't tell if what you're doing is working — or where to even start. Buff Meter fixes that. Snap a photo, and AI breaks down your physique in seconds — how lean you are, which muscles are developed, which ones are lagging, and exactly what you'd look like if you committed to a transformation. SEE WHAT YOU'RE WORKING WITH Every scan scores your chest, back, shoulders, arms, legs, and core individually. You'll know exactly where you're strong and where you're falling behind. Your overall Buff Score tracks your physique from Untrained to Genetic Freak — so next time you scan, you'll know if you actually improved. SEE WHAT YOU COULD LOOK LIKE Pick a goal — lose fat, build muscle, or both — and the app generates an AI image of your future physique. Not a generic model. Your body, transformed. It's the version of you that's 12 weeks of consistency away. BUILD THE HABITS THAT GET YOU THERE Personalized daily targets for sleep, water, calories, protein, and training. Check them off as you go — or let Apple Health fill them in automatically. You'll see exactly which days you showed up and which ones you didn't. WATCH YOURSELF CHANGE Charts for body fat, weight, and Buff Score over weeks and months. The kind of progress that's invisible day to day becomes obvious when you have the data. FREE TO START Your first body scan is free. Daily check-ins and progress charts included. BUFF METER PREMIUM Unlimited scans, goal visualization, and full Apple Health sync. Weekly, yearly, or lifetime. Stop wondering. Get your score. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ColdKeeper

Features
Read full description

ColdKeeper is the simple, beautiful timer for cold therapy. Whether you're starting your first cold shower or running structured Wim Hof sessions, ColdKeeper turns every plunge into measurable progress. Designed for hands you can barely feel. Big tap targets. Strong haptics. Audio cues that get through closed eyes and a hood. No fiddling, no menus, no distractions when you're under the cold. — FOUR SESSION TYPES — • Ice Bath • Cold Shower • Open Water Swim • Contrast Therapy Pick a type, log the temperature (optional), tap the giant START button, and ColdKeeper handles the rest. — GUIDED PROTOCOLS — • Beginner Ramp — 30s → 60s → 2min over four weeks. The proven on-ramp. • Wim Hof — guided breath rounds plus immersion. Follow along, no YouTube. • Contrast Therapy — automatic hot/cold alternation, athlete-style recovery. • Custom (Pro) — design your own intervals. — DEEP HISTORY & STATS — Every session is saved with date, type, duration and water temperature. See your streak, total time under the cold, longest plunge, and weekly trend at a glance. Free tier keeps the last 7 days. Pro keeps everything, forever. — APPLE HEALTH — Sessions write to the Health app as "Cold Water Immersion" workouts (Pro). Your data stays on-device — ColdKeeper never sees it. — COLDKEEPER PRO — ONE-TIME UNLOCK For €7.99 / $7.99 (one-time, never expires) you unlock: • Unlimited history • All advanced protocols + custom protocol builder • Apple Health integration • iCloud sync across all your Apple devices • Home Screen widgets (streak + last session) • Detailed weekly and monthly stats • Priority support No subscription. Pay once. Keep forever. Free updates included. — PRIVACY BY DESIGN — No analytics. No ads. No tracking SDKs. No accounts. Your sessions live on your iPhone (and your private iCloud, if you opt in). The developer cannot see them. Read the full privacy policy at maximesaltet.com/coldkeeper/privacy. — BUILT NATIVELY FOR iOS — SwiftUI. SwiftData with CloudKit. StoreKit 2. Core Haptics. HealthKit. Localized in English and French. Light + dark mode. Dynamic Type ready. Built and maintained by an indie developer who actually answers your emails. — DISCLAIMER — ColdKeeper is a wellness and lifestyle app, not a medical device. Cold exposure can be dangerous. Consult a physician before starting, especially if you have cardiovascular conditions. Never plunge in open water alone. The app does not diagnose, treat, or prevent any condition. Stay frosty.

Screenshots

BuffMeter4 screens
ColdKeeper4 screens

Verdict

The call

The clearest difference is update cadence: BuffMeter at every 4 days against ColdKeeper's every 2 months. On price, ads, in-app purchases and device support 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. BuffMeter sells 3 in-app purchases, starting at $4.99 per 7 days and ColdKeeper sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BuffMeter ships an update every 4 days, ColdKeeper every 2 months. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 8 level
BuffMeter versus ColdKeeper: the parameters behind the verdict, then further details
ParameterBuffMeterColdKeeper
PriceFreeFree
Rating4.4 (7 ratings) — better—
Number of ratings7 — better—
Update frequencyEvery 4 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size29 MB3 MB
Age rating9+4+
DeveloperPower Craft Training, LLCMaxime SALTET

In-app purchases

3 purchases

BuffMeter

Subscriptions3
  • Premium Access – Weekly$4.997 Days
  • Premium Access - Monthly$19.991 Month
  • Premium Access - Yearly3 Days trial$49.991 Year
1 purchases

ColdKeeper

One-time1
  • ColdKeeper Pro · Lifetime Unlock$7.99

Questions

Is BuffMeter free?
BuffMeter is free to download, with in-app purchases available.
Is ColdKeeper free?
ColdKeeper is free to download, with in-app purchases available.
Do BuffMeter or ColdKeeper have ads?
Neither BuffMeter nor ColdKeeper shows ads.
Which is updated more often, BuffMeter or ColdKeeper?
BuffMeter ships an update every 4 days, and ColdKeeper every 2 months. Most recently, BuffMeter was updated on October 3, 2026 and ColdKeeper on September 30, 2026.

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