# Bend Aid RT vs BondKeeper

The clearest difference is in-app purchases: Bend Aid RT at none against BondKeeper's 1. BondKeeper's advantage is update cadence (every 2 weeks vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BondKeeper sells 1 in-app purchase, starting at $4.99 per month. Bend Aid RT asks for nothing beyond the download.

Bend Aid RT ships an update every 7 months, BondKeeper every 2 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Bend Aid RT | BondKeeper |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 2 MB | 1 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [P Stroney](https://appshunter.io/developer/990339951) | [杰 向](https://appshunter.io/developer/1860305678) |

## 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


### BondKeeper

[App page](https://appshunter.io/ios/app/bondkeeper/id6761246899)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BondKeeper Premium | $4.99 | per month |


## Frequently asked questions

### Is Bend Aid RT free?

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

### Is BondKeeper free?

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

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

Neither Bend Aid RT nor BondKeeper shows ads.

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

Bend Aid RT ships an update every 7 months, and BondKeeper every 2 weeks. Most recently, Bend Aid RT was updated on October 17, 2026 and BondKeeper on October 16, 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.*