# PUMPZZ vs Kronos Studio

The clearest difference is ads: Kronos Studio at none against PUMPZZ's shown. Kronos Studio also leads on update cadence (every 2 days vs every 4 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. PUMPZZ sells 4 in-app purchases, starting at $2.99 per 7 days and Kronos Studio sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

PUMPZZ ships an update every 4 days, Kronos Studio every 2 days. Both last shipped on September 18, 2026.

## The numbers

| Metric | PUMPZZ | Kronos Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (24 ratings)](https://appshunter.io/ios/app/pumpzz-gym-workout-tracker/id6759228538/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 194 MB | 97 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Alex Tirim](https://appshunter.io/developer/1855322163) | [Muller Labs LLC](https://appshunter.io/developer/1884923229) |

## What reviewers say

### PUMPZZ

[App page](https://appshunter.io/ios/app/pumpzz-gym-workout-tracker/id6759228538)

This app guides your gym workouts by suggesting weights and reps for each set. It automatically adjusts your training based on your progress, allowing for flexible workout modifications and detailed logging of various set types. Access a large exercise library with offline capabilities.

**Highlights:** AI-driven weight and rep suggestions, Adaptable workout scheduling, Detailed set type logging, Plate calculator, Offline exercise library, Progressive overload tracking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Repstack Pro Weekly | $2.99 | per 7 days |
| Repstack Pro Monthly | $9.99 | per month |
| Repstack Pro Yearly | $39.99 | per year |
| Repstack Pro Lifetime | $119.99 | one-time |


### Kronos Studio

[App page](https://appshunter.io/ios/app/kronos-studio/id6762472031)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kronos Pro Monthly | $7.99 | per month |
| Kronos Pro Yearly | $79.99 | per year |


## Frequently asked questions

### Is PUMPZZ free?

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

### Is Kronos Studio free?

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

### Do PUMPZZ or Kronos Studio have ads?

PUMPZZ shows ads; Kronos Studio does not.

### Which is updated more often, PUMPZZ or Kronos Studio?

PUMPZZ ships an update every 4 days, and Kronos Studio every 2 days. Most recently, PUMPZZ was updated on September 18, 2026 and Kronos Studio on September 18, 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.*