# Bend Aid RT vs CalDown

The clearest difference is price: Bend Aid RT at Free against CalDown's $9.99. Bend Aid RT also leads on in-app purchases (none vs 1) and iOS requirement (17.6 vs 26.0). CalDown's advantage is update cadence (every 5 days vs every 7 months). On ads and device support there is nothing between them.

Bend Aid RT is free to download; CalDown costs $9.99 up front. CalDown sells 1 one-off in-app purchase. Bend Aid RT asks for nothing beyond the download.

Bend Aid RT ships an update every 7 months, CalDown every 5 days. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Bend Aid RT | CalDown |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caldown/id6744269741/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 7 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [P Stroney](https://appshunter.io/developer/990339951) | [Valentin Haberling](https://appshunter.io/developer/1803412455) |

## What reviewers say

### Bend Aid RT

[App page](https://appshunter.io/ios/app/bend-aid-rt/id990339952)

This app calculates the missing sides and angles of a right triangle. Users can input any two known variables and select their preferred number format for entry. It provides instant solutions and error messages for invalid inputs.

**Highlights:** Solve right triangles, Input any two variables, Multiple number formats (decimal, feet/inches, metric), Angle calculation, Error message validation, Convert between formats

**Features:** Vision Pro support

**In-app purchases:** none


### CalDown

[App page](https://appshunter.io/ios/app/caldown/id6744269741)

This app transforms your calendar into a real-time timeline, showing your current and upcoming events with live countdowns. It offers customizable widgets for your home and lock screens, and a companion app for Apple Watch, all designed for clarity and focus.

**Highlights:** Real-time event timeline, Live countdowns and progress bars, Home and Lock Screen widgets, Apple Watch companion app, Event notes and checklists, Hide specific event occurrences

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock CalDown Pro | $9.99 | one-time |


## Frequently asked questions

### Is Bend Aid RT free?

Bend Aid RT is free to download, with no in-app purchases.

### Is CalDown free?

CalDown costs $9.99, and also offers in-app purchases.

### Do Bend Aid RT or CalDown have ads?

Neither Bend Aid RT nor CalDown shows ads.

### Which is updated more often, Bend Aid RT or CalDown?

Bend Aid RT ships an update every 7 months, and CalDown every 5 days. Most recently, Bend Aid RT was updated on October 17, 2026 and CalDown on October 12, 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.*