# 상급노하우 vs BTB Workout Log

The clearest difference is in-app purchases: 상급노하우 at none against BTB Workout Log's 2. BTB Workout Log's advantage is update cadence (every 4 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BTB Workout Log sells 2 in-app purchases, starting at $1.99 per month. 상급노하우 asks for nothing beyond the download.

상급노하우 ships an update every 4 months, BTB Workout Log every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 상급노하우 | BTB Workout Log |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Size | 33 MB | 48 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [kwonyoung joo](https://appshunter.io/developer/1885141955) | [Yoshitake Tani](https://appshunter.io/developer/1893963480) |

## What reviewers say

### 상급노하우

[App page](https://appshunter.io/ios/app/id6760579875)

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

**In-app purchases:** none


### BTB Workout Log

[App page](https://appshunter.io/ios/app/btb-workout-log-gym-tracker/id6762371418)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Premium Yearly | $19.99 | per year |


## Frequently asked questions

### Is 상급노하우 free?

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

### Is BTB Workout Log free?

BTB Workout Log is free to download, with in-app purchases available.

### Do 상급노하우 or BTB Workout Log have ads?

Neither 상급노하우 nor BTB Workout Log shows ads.

### Which is updated more often, 상급노하우 or BTB Workout Log?

상급노하우 ships an update every 4 months, and BTB Workout Log every 4 days. Most recently, 상급노하우 was updated on October 31, 2026 and BTB Workout Log on October 31, 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.*