# BuzzCalc vs ROCKET Endurance Training

The clearest difference is in-app purchases: BuzzCalc at none against ROCKET Endurance Training's 2. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. ROCKET Endurance Training sells 2 in-app purchases, starting at $19.95 per month. BuzzCalc asks for nothing beyond the download.

BuzzCalc ships an update every 5 days, ROCKET Endurance Training weekly. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | BuzzCalc | ROCKET Endurance Training |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 150 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mitch Impey](https://appshunter.io/developer/1774600727) | [Rocket Endurance Pty Ltd](https://appshunter.io/developer/1881787061) |

## What reviewers say

### BuzzCalc

[App page](https://appshunter.io/ios/app/buzzcalc/id6737088203)

Easily calculate standard drinks from beer sizes and alcohol content. This offline utility app offers a user-friendly interface to track your alcohol consumption quickly and conveniently.

**Highlights:** Standard drinks calculator, Adjustable ABV slider, Offline functionality, User-friendly interface, Multiple beer sizes

**Features:** macOS Compatibility

**In-app purchases:** none


### ROCKET Endurance Training

[App page](https://appshunter.io/ios/app/rocket-endurance-training/id6759940607)

This adaptive training app creates personalized, multi-discipline plans for athletes balancing various sports like triathlon, HYROX, and running. It automatically adjusts your schedule based on your life events and training progress, offering the intelligence of a personal coach at a fraction of the cost.

**Highlights:** Personalized multi-discipline training plans, Adaptive load management, Automatic schedule adjustments, Strava and watch sync, Supports up to 10 races annually, Built by coaches and scientists

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Monthly | $19.95 | per month |
| Rocket Annual | $129.99 | per year |


## Frequently asked questions

### Is BuzzCalc free?

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

### Is ROCKET Endurance Training free?

ROCKET Endurance Training is free to download, with in-app purchases available.

### Do BuzzCalc or ROCKET Endurance Training have ads?

Neither BuzzCalc nor ROCKET Endurance Training shows ads.

### Which is updated more often, BuzzCalc or ROCKET Endurance Training?

BuzzCalc ships an update every 5 days, and ROCKET Endurance Training weekly. Most recently, BuzzCalc was updated on October 4, 2026 and ROCKET Endurance Training on October 8, 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.*