Comparison

Cali Studio vs Stack

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

Head to head
About

Cali Studio

Manage your studio bookings and memberships effortlessly. Discover available classes, review past and upcoming sessions, monitor your progress, and set fitness goals. Access exclusive app-only deals on memberships and merchandise.

Highlights
  • Streamline booking process
  • Manage memberships
  • Navigate available classes
  • View past & future sessions
  • Track consistency
  • Set achievable goals
  • Exclusive app-only offers
Features
Read full description

Streamline your booking process and easily manage your membership. Cali Studio app lets you navigate available classes, view previous & future sessions, track consistency and set achievable goals all in one place. Also catch exclusive app only offers on membership, merch, and much more. Enter the online studio.

About

Stack

Features
Read full description

Stack is the supplement tracker that finally looks as good as the rest of your day. Track your vitamins, supplements and medications, get reminders so you never miss a dose, and build a streak that keeps you consistent. No clutter. No noise. Just a calm, beautiful daily ritual that takes seconds. BUILD YOUR STACK Add anything you take in seconds with smart suggestions from a built-in library of vitamins, minerals, supplements and common medications. Everything is organised automatically by time of day. NEVER MISS A DOSE Set gentle reminders around your routine. Mark each one taken with a single tap and watch your day fill in. Morning, midday, evening or night, Stack keeps you on track. KEEP YOUR STREAK Consistency is what actually delivers results. Stack counts your daily streak and celebrates the milestones that keep the habit alive. MEET YOUR ADVISOR Unlock a personal supplement advisor that knows your goals, diet and routine. Get a full review of your stack, spot gaps and interactions, and fine-tune your timing and doses. Ask anything in plain language, and go deeper into the science whenever you want. Add any recommendation to your stack with one tap. PRIVATE BY DESIGN Your data stays on your device. No accounts, no ads, no tracking, ever. Stack Pro unlocks the Advisor with a 7-day free trial, then a simple subscription. Cancel anytime. Stack provides general information about supplements and nutrition. It is not a substitute for professional medical advice, diagnosis or treatment. Always consult a qualified healthcare professional before changing your supplement or medication routine. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Cali Studio4 screens
Stack4 screens

Verdict

The call

The clearest difference is in-app purchases: Cali Studio at none against Stack's 2. Stack's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

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

Both are free to download. Stack sells 2 in-app purchases, starting at $5.99 per month. Cali Studio asks for nothing beyond the download.

UpkeepUpdate frequency

Cali Studio ships an update every 2 months, Stack every 3 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

Scorecard2 real differences Β· 6 level
Cali Studio versus Stack: the parameters behind the verdict, then further details
ParameterCali StudioStack
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 2 monthsEvery 3 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationFreeβ€”
DevicesiPhoneiPhone
Requires iOS16.0 β€” better17.0
Further details β€” not scored
Size70 MB9 MB
Age rating9+4+
DeveloperCali StudioHenry Hinge

In-app purchases

None

Cali Studio

No in-app purchases

2 purchases

Stack

Subscriptions2
  • Stack Pro7 Days trial$5.991 Month
  • Stack Pro7 Days trial$39.991 Year

Questions

Is Cali Studio free?
Cali Studio is free to download, with no in-app purchases.
Is Stack free?
Stack is free to download, with in-app purchases available.
Do Cali Studio or Stack have ads?
Neither Cali Studio nor Stack shows ads.
Which is updated more often, Cali Studio or Stack?
Cali Studio ships an update every 2 months, and Stack every 3 days. Most recently, Cali Studio was updated on October 7, 2026 and Stack on October 10, 2026.

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