# StackDay vs StackDays

The clearest difference is iOS requirement: StackDays at 15.3 against StackDay's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. StackDay sells 8 in-app purchases, starting at $0.99 per 7 days and StackDays sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

StackDay ships an update every 4 days, StackDays weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | StackDay | StackDays |
| --- | --- | --- |
| 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 4 days** | Weekly |
| Monetization | Freemium | — |
| Size | 24 MB | 97 MB |
| Requires iOS | 17.0 | **15.3** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Fog Hill, LLC](https://appshunter.io/developer/1496413878) | [RHH LLC](https://appshunter.io/developer/1881934615) |

## What reviewers say

### 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, iPhone Duo 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 |


### StackDays

[App page](https://appshunter.io/ios/app/stackdays-habit-tracker/id6796375407)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Annual Pro | $24.99 | per year |
| Lifetime Pro | $59.99 | one-time |


## Frequently asked questions

### Is StackDay free?

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

### Is StackDays free?

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

### Do StackDay or StackDays have ads?

Both StackDay and StackDays show ads.

### Which is updated more often, StackDay or StackDays?

StackDay ships an update every 4 days, and StackDays weekly. Most recently, StackDay was updated on October 28, 2026 and StackDays on October 24, 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.*