# RiskAlert Notify vs Ladder Angle Calculator

The clearest difference is in-app purchases: RiskAlert Notify at none against Ladder Angle Calculator's 3. RiskAlert Notify also leads on update cadence (every 8 days vs every 4 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Ladder Angle Calculator sells 3 in-app purchases, starting at $4.99 per 7 days. RiskAlert Notify asks for nothing beyond the download.

RiskAlert Notify ships an update every 8 days, Ladder Angle Calculator every 4 weeks. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | RiskAlert Notify | Ladder Angle Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 4 weeks |
| Size | 62 MB | 11 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OCUCON LIMITED](https://appshunter.io/developer/1792828675) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### RiskAlert Notify

[App page](https://appshunter.io/ios/app/riskalert-notify/id6741064483)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ladder Angle Calculator

[App page](https://appshunter.io/ios/app/ladder-angle-calculator/id6772270431)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Yearly | $24.99 | per year |
| Lifetime Pro | $49.99 | one-time |


## Frequently asked questions

### Is RiskAlert Notify free?

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

### Is Ladder Angle Calculator free?

Ladder Angle Calculator is free to download, with in-app purchases available.

### Do RiskAlert Notify or Ladder Angle Calculator have ads?

Neither RiskAlert Notify nor Ladder Angle Calculator shows ads.

### Which is updated more often, RiskAlert Notify or Ladder Angle Calculator?

RiskAlert Notify ships an update every 8 days, and Ladder Angle Calculator every 4 weeks. Most recently, RiskAlert Notify was updated on September 30, 2026 and Ladder Angle Calculator on October 8, 2026.

---

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