# Supp Stack vs StackDay

The clearest difference is update cadence: StackDay at every 3 days against Supp Stack's every 3 weeks. Supp Stack's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Supp Stack sells 2 in-app purchases, starting at $4.99 per month and StackDay sells 8 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Supp Stack ships an update every 3 weeks, StackDay every 3 days. The most recent releases landed on September 13, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Supp Stack | StackDay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/stackday-supplement-and-peptide/id6761502044/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 78 MB | 20 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [kota tada](https://appshunter.io/developer/1658942612) | [Fog Hill, LLC](https://appshunter.io/developer/1496413878) |

## What reviewers say

### Supp Stack

[App page](https://appshunter.io/ios/app/supp-stack-supplements/id6759486455)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (1 month) | $4.99 | per month |
| Premium (1 year) | $49.99 | per year |


### StackDay

[App page](https://appshunter.io/ios/app/stackday-supplement-and-peptide/id6761502044)

This app helps you consistently take your vitamins and supplements. Log doses, build streaks, and view your adherence over time. It offers smart reminders and pre-loaded supplement information to make tracking easy.

**Highlights:** Daily checklist for all supplements, 50+ pre-loaded supplements, Streak and adherence statistics, Customizable smart reminders, Local data storage for privacy, Home screen widget (Pro)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly Discount | $0.99 | per 7 days |
| Pro Weekly | $1.99 | per 7 days |
| Pro Monthly Discount | $3.99 | per month |
| StackDay Pro Monthly | $4.99 | per month |
| StackDay Pro Monthly Subscription | $4.99 | per month |
| Pro Annual Discount | $19.99 | per year |
| StackDay Pro Annual Subscription | $24.99 | per year |
| StackDay Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is Supp Stack free?

Supp Stack is free to download, with in-app purchases available.

### Is StackDay free?

StackDay is free to download, with in-app purchases available.

### Do Supp Stack or StackDay have ads?

Both Supp Stack and StackDay show ads.

### Which is updated more often, Supp Stack or StackDay?

Supp Stack ships an update every 3 weeks, and StackDay every 3 days. Most recently, Supp Stack was updated on September 13, 2026 and StackDay on September 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*