# 20 Pull Ups Trainer Challenge vs Brainstorm Strong US

The clearest difference is in-app purchases: Brainstorm Strong US at none against 20 Pull Ups Trainer Challenge's 3. Brainstorm Strong US also leads on iOS requirement (13.0 vs 16.0). 20 Pull Ups Trainer Challenge's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 20 Pull Ups Trainer Challenge sells 3 in-app purchases, starting at $4.99 per month. Brainstorm Strong US asks for nothing beyond the download.

## The numbers

| Metric | 20 Pull Ups Trainer Challenge | Brainstorm Strong US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (890 ratings)](https://appshunter.io/ios/app/20-pull-ups-trainer-challenge/id848897098/reviews)** | — |
| Number of ratings | **890** | — |
| Positive reviews | 48.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 71 MB | 83 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zen Labs](https://appshunter.io/developer/485971738) | [PushPress, Inc.](https://appshunter.io/developer/688595778) |

## What reviewers say

### 20 Pull Ups Trainer Challenge

[App page](https://appshunter.io/ios/app/20-pull-ups-trainer-challenge/id848897098)

This app guides users to achieve 20 pull-ups in 6 weeks with a proven program suitable for all fitness levels. It offers voice cues, progress tracking, and motivational features. The first two weeks are free, with subscription options available for full access.

**Highlights:** Achieve 20 pull-ups in 6 weeks, Program for all fitness levels, Voice cues for guidance, Badges and awards for workouts, Social sharing of progress, Motivational music

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zen Unlimited Pass Monthly | $4.99 | per month |
| Zen Power Playlist 3 Months | $29.99 | per 3 months |
| Zen Unlimited Pass Annual | $74.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Well-planned app
- 💪 Helps improve pull-ups
- 🎉 Great for military/fitness goals

**What reviewers complain about**

- 💰 Subscription model change after purchase
- 🔒 Locked out of paid features after update
- 🤔 Unclear progression for beginners
- ⏱️ Timer issues (stops when switching apps)

**Reported bugs**

- App crashes
- Compatibility issues with older devices

**Requested features**

- Ability to track incomplete workouts
- Option to start at beginner, intermediate, or advanced level
- Ability to combine multiple Zen apps (push-ups, squats, etc.) into circuits


### Brainstorm Strong US

[App page](https://appshunter.io/ios/app/brainstorm-strong-us/id6747680589)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is 20 Pull Ups Trainer Challenge free?

20 Pull Ups Trainer Challenge is free to download, with in-app purchases available.

### Is Brainstorm Strong US free?

Brainstorm Strong US is free to download, with no in-app purchases.

### Do 20 Pull Ups Trainer Challenge or Brainstorm Strong US have ads?

Brainstorm Strong US shows ads; 20 Pull Ups Trainer Challenge does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*