# BAC calculator vs RepStack

The clearest difference is in-app purchases: RepStack at none against BAC calculator's 6. RepStack also leads on update cadence (daily vs every 5 days) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. BAC calculator sells 4 in-app purchases, starting at $2.99 per month. RepStack asks for nothing beyond the download.

BAC calculator ships an update every 5 days, RepStack daily. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | BAC calculator | RepStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (14 ratings)](https://appshunter.io/ios/app/bac-calculator-alcocurve/id6744902908/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 40 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Jonas Laskemoen](https://appshunter.io/developer/1809836196) | [ALEXANDER HINTERLEITNER](https://appshunter.io/developer/1882835373) |

## What reviewers say

### BAC calculator

[App page](https://appshunter.io/ios/app/bac-calculator-alcocurve/id6744902908)

This app helps you understand how alcohol impacts your body by tracking your blood alcohol content over time. Input your drinks and personal details to visualize your BAC levels and estimate when you'll be sober.

**Highlights:** Track blood alcohol content (BAC), Visualize BAC rise and fall, Estimate sobriety time, Personalized drink logging, Smart night planning

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alcocurve Pro (Monthly) | $2.99 | per month |
| Alcocurve Pro (Yearly) | $29.99 | per year |
| Buy Alcocurve a beer | $0.99 | one-time |
| Buy Alcocurve champagne | $8.99 | one-time |


### RepStack

[App page](https://appshunter.io/ios/app/repstack/id6760138812)

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

**In-app purchases:** none


## Frequently asked questions

### Is BAC calculator free?

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

### Is RepStack free?

RepStack is free to download, with no in-app purchases.

### Do BAC calculator or RepStack have ads?

Neither BAC calculator nor RepStack shows ads.

### Which is updated more often, BAC calculator or RepStack?

BAC calculator ships an update every 5 days, and RepStack daily. Most recently, BAC calculator was updated on October 13, 2026 and RepStack on October 10, 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.*