# MD Calculator vs Bondry

MD Calculator and Bondry are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. MD Calculator sells 1 one-off in-app purchase and Bondry sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | MD Calculator | Bondry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (79 ratings)](https://appshunter.io/ios/app/md-calculator/id6463897900/reviews)** | — |
| Number of ratings | **79** | — |
| Positive reviews | 59.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 10 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MD Studio](https://appshunter.io/developer/1438854445) | [R.I.O.F. - Ressourcen Input Optimierte Facilities GmbH](https://appshunter.io/developer/1896072003) |

## What reviewers say

### MD Calculator

[App page](https://appshunter.io/ios/app/md-calculator/id6463897900)

Perform calculations directly from your Home Screen using interactive widgets. Customize your experience with a variety of themes, including nostalgic skeuomorphic designs.

**Highlights:** Home Screen Calculator Widget, iOS 17 Interactive Widget Technology, Customizable Themes, Skeuomorphic Themes, On-the-go Computations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MD Calculator Premium | $0.99 | one-time |


### Bondry

[App page](https://appshunter.io/ios/app/bondry/id6780764887)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bondry - monthly | $3.99 | per month |
| Bondry – yearly | $29.99 | per year |


## Frequently asked questions

### Is MD Calculator free?

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

### Is Bondry free?

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

### Do MD Calculator or Bondry have ads?

Neither MD Calculator nor Bondry shows ads.

### Which is updated more often, MD Calculator or Bondry?

MD Calculator ships an update fortnightly, and Bondry fortnightly. Most recently, MD Calculator was updated on October 22, 2026 and Bondry on October 24, 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.*