# Probability vs BKFast Alerts

The clearest difference is in-app purchases: BKFast Alerts at none against Probability's 1. Probability's advantage is update cadence (every 10 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Probability sells 1 one-off in-app purchase. BKFast Alerts asks for nothing beyond the download.

Probability ships an update every 10 days, BKFast Alerts every 3 months. The most recent releases landed on September 4, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Probability | BKFast Alerts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/probability-easy-and-practical/id1625073969/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 166 MB | 52 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Man Hung Sun](https://appshunter.io/developer/1471605573) | [BACH KHOA INNOVATION JOINT STOCK COMPANY](https://appshunter.io/developer/1813166683) |

## What reviewers say

### Probability

[App page](https://appshunter.io/ios/app/probability-easy-and-practical/id1625073969)

Enhance your decision-making skills by learning to assess probabilities with this app. It offers formulas for problem-solving, note-taking capabilities, and interactive tools like dice and coin tosses for practical learning.

**Highlights:** Probability assessment, Decision-making improvement, Problem-solving formulas, Personalized notes, Dice and coin toss simulations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $0.99 | one-time |


### BKFast Alerts

[App page](https://appshunter.io/ios/app/bkfast-alerts/id6757311245)

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

**In-app purchases:** none


## Frequently asked questions

### Is Probability free?

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

### Is BKFast Alerts free?

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

### Do Probability or BKFast Alerts have ads?

Neither Probability nor BKFast Alerts shows ads.

### Which is updated more often, Probability or BKFast Alerts?

Probability ships an update every 10 days, and BKFast Alerts every 3 months. Most recently, Probability was updated on September 4, 2026 and BKFast Alerts on September 13, 2026.

---

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