# base4work SK vs Progressive Overload Training

The clearest difference is in-app purchases: base4work SK at none against Progressive Overload Training's 2. base4work SK also leads on ads (none vs shown) and iOS requirement (13.4 vs 17.0). Progressive Overload Training's advantage is update cadence (weekly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Progressive Overload Training sells 2 in-app purchases, starting at $0.99 per month. base4work SK asks for nothing beyond the download.

base4work SK ships an update every 3 months, Progressive Overload Training weekly. The most recent releases landed on March 24, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | base4work SK | Progressive Overload Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Size | 29 MB | 17 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BASE](https://appshunter.io/developer/1592464846) | [Muhammad Hassan](https://appshunter.io/developer/1249312001) |

## What reviewers say

### base4work SK

[App page](https://appshunter.io/ios/app/base4work-sk/id1592464844)

**Features:** macOS Compatibility

**In-app purchases:** none


### Progressive Overload Training

[App page](https://appshunter.io/ios/app/progressive-overload-training/id6460368757)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Provtra Monthly Pro | $0.99 | per month |
| Provtra Yearly Pro | $9.99 | per year |


## Frequently asked questions

### Is base4work SK free?

base4work SK is free to download, with no in-app purchases.

### Is Progressive Overload Training free?

Progressive Overload Training is free to download, with in-app purchases available.

### Do base4work SK or Progressive Overload Training have ads?

Progressive Overload Training shows ads; base4work SK does not.

### Which is updated more often, base4work SK or Progressive Overload Training?

base4work SK ships an update every 3 months, and Progressive Overload Training weekly. Most recently, base4work SK was updated on March 24, 2026 and Progressive Overload Training on September 17, 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.*