Comparison

CycleStack vs Kalvo

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

Head to head
About

CycleStack

Features
Read full description

Track your supplements, vitamins and medications — and actually stay consistent. CycleStack is built for real health routines. Whether you take daily vitamins, follow complex cycling protocols, or manage medications for yourself or a loved one — CycleStack keeps you on track automatically. SMART SCHEDULING Set your routine once. Daily, every few days, fixed cycles, or on/off week protocols — CycleStack handles any schedule automatically so you never have to think about it. NEVER RUN OUT Track remaining doses and get notified before you hit zero. No more running out mid-cycle when the store is closed. STAY MOTIVATED See your daily completion with the battery-style progress tracker. Build streaks, earn badges and watch your consistency improve over time. SYNC ACROSS YOUR DEVICES Sign in with Apple to silently sync your entire stack across iPhone and iPad. Reinstall the app or switch devices — everything comes back automatically. PRIVATE BY DESIGN No account required to get started. Your data stays on your device. Export or delete anytime. BUILT FOR EVERYONE — Supplement stacks and biohacking protocols — Daily vitamins and over-the-counter medications — Prescription medication management — Elderly care and caregiver routines Free to get started. Premium unlocks full history, advanced stats, unlimited supplements and cloud backup. Terms of Use: https://nusli.app/terms Privacy Policy: https://nusli.app/privacy

About

Kalvo

Features
Read full description

Point your camera at your plate. Kalvo identifies each food, estimates the portion and logs calories, protein, carbs and fat — in seconds. No database searching. No weighing. No account. LOG YOUR WAY • Snap a photo — AI recognizes each item with a portion estimate and confidence score • Describe a meal in words and let AI estimate it • Fix any result in plain English — "no rice, extra chicken" • Scale portions (0.5×–2Ɨ) with macros updating live • Barcode scanner via Open Food Facts • Scan the Nutrition Facts label on a package and log exactly what it says • Manual entry, recent foods and saved favorites — log any way you like KNOWS WHAT YOU ACTUALLY EAT Kalvo tailors its food knowledge to your country — real dishes, brands and portion sizes from where you live, so estimates fit what is actually on your plate. Set or change your country any time. YOUR PERSONAL PLAN A short quiz builds a daily calorie and macro target using the Mifflin-St Jeor equation — the formula dietitians use. Targets adjust automatically as your weight changes, with an optional goal-weight line on your chart. After about a month of logging, Kalvo can measure what you actually burn from your own food and weight logs and offer to update your target — you decide whether to take it. STAY ON TRACK • Animated calorie ring and macro bars on Today • Meals grouped by breakfast, lunch, dinner and snacks • Water tracking and streaks, with Home Screen and Lock Screen widgets • Calendar history and 7/30-day trend charts • Weekly insights: average calories, on-target days, weight change • Optional daily reminder and Apple Health weight sync PRIVATE BY DESIGN No account. No sign-up. No ads. No tracking. The photos you take are analyzed but not stored on our servers. Your data stays on your device — or syncs through your own private iCloud, which we can never read. No email, no password. Export everything to CSV, or delete it all with one tap. KALVO PRO Build your personal calorie plan free when you set up. Kalvo Pro then unlocks the app: AI photo scanning, describe-a-meal, barcode lookup, nutrition label scanning, manual logging, trends and streaks (fair use: up to 20 AI scans a day): • Monthly • Annual, with a 3-day free trial (best value) Prices are shown in your local currency in the app before you subscribe. Subscriptions renew automatically until canceled. Manage or cancel any time in your App Store settings. Kalvo provides estimates for general wellness and is not medical advice. Privacy policy: https://kalvoapp.com/privacy Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

CycleStack4 screens
Kalvo4 screens

Verdict

The call

The clearest difference is update cadence: Kalvo at every 5 days against CycleStack's every 2 months. CycleStack's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, 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. CycleStack sells 3 in-app purchases, starting at $2.99 per month and Kalvo sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CycleStack ships an update every 2 months, Kalvo every 5 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Ā· 3 level
CycleStack versus Kalvo: the parameters behind the verdict, then further details
ParameterCycleStackKalvo
PriceFreeFree
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size45 MB9 MB
Age rating4+17+
DeveloperNIKOLAOS SYNANIDISThink Commerce Ltd

In-app purchases

3 purchases

CycleStack

Subscriptions2
  • Monthly Premium$2.991 Month
  • Annual Premium$17.991 Year
One-time1
  • Lifetime Access$39.99
2 purchases

Kalvo

Subscriptions2
  • Pro Weekly3 Days trial$4.997 Days
  • Pro Annual3 Days trial$39.991 Year

Questions

Is CycleStack free?
CycleStack is free to download, with in-app purchases available.
Is Kalvo free?
Kalvo is free to download, with in-app purchases available.
Do CycleStack or Kalvo have ads?
Neither CycleStack nor Kalvo shows ads.
Which is updated more often, CycleStack or Kalvo?
CycleStack ships an update every 2 months, and Kalvo every 5 days. Most recently, CycleStack was updated on November 9, 2026 and Kalvo on October 31, 2026.

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