# BoneCalc vs DLP

The clearest difference is update cadence: BoneCalc at weekly against DLP's every 17 months. On price, ads, 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.

BoneCalc ships an update weekly, DLP every 17 months. The most recent releases landed on September 13, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | BoneCalc | DLP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 17 months |
| Size | 72 MB | 36 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [BC Children's Hospital](https://appshunter.io/developer/1521364756) | [Christian Schramm](https://appshunter.io/developer/372862438) |

## What reviewers say

### BoneCalc

[App page](https://appshunter.io/ios/app/bonecalc/id1535346472)

**Features:** macOS Compatibility

**In-app purchases:** none


### DLP

[App page](https://appshunter.io/ios/app/dlp-app/id1614725987)

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

**In-app purchases:** none


## Frequently asked questions

### Is BoneCalc free?

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

### Is DLP free?

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

### Do BoneCalc or DLP have ads?

Neither BoneCalc nor DLP shows ads.

### Which is updated more often, BoneCalc or DLP?

BoneCalc ships an update weekly, and DLP every 17 months. Most recently, BoneCalc was updated on September 13, 2026 and DLP on September 22, 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.*