# 31 vs AIM Athletic BC

The clearest difference is ads: 31 at none against AIM Athletic BC's shown. 31 also leads on iOS requirement (11.0 vs 15). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 31 | AIM Athletic BC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (13 ratings)](https://appshunter.io/ios/app/31-day-challenge/id1563818382/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Monthly |
| Monetization | Free | — |
| Size | 90 MB | 90 MB |
| Requires iOS | **11.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Children's Hospital of Philadelphia](https://appshunter.io/developer/351401975) | [AIM Athletic LTD](https://appshunter.io/developer/1613131382) |

## What reviewers say

### 31

[App page](https://appshunter.io/ios/app/31-day-challenge/id1563818382)

Participate in a month-long fitness challenge to support a children's hospital. Track your physical activity, update your fundraising progress, and send emails directly from your device.

**Highlights:** 31-Day fitness challenge participation, Apple Health Kit integration, Fundraising page updates, Email communication, Progress tracking to goal

**In-app purchases:** none


### AIM Athletic BC

[App page](https://appshunter.io/ios/app/aim-athletic-bc/id6504628867)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is 31 free?

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

### Is AIM Athletic BC free?

AIM Athletic BC is free to download, with no in-app purchases.

### Do 31 or AIM Athletic BC have ads?

AIM Athletic BC shows ads; 31 does not.

---

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