# Converter, Calculator & Tools vs OpLink

The clearest difference is in-app purchases: OpLink at none against Converter, Calculator & Tools's 1. OpLink also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Converter, Calculator & Tools sells 1 one-off in-app purchase. OpLink asks for nothing beyond the download.

Converter, Calculator & Tools ships an update every 2 months, OpLink fortnightly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Converter, Calculator & Tools | OpLink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 14 MB | 179 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [InfoEnum Software Systems](https://appshunter.io/developer/832495044) | [Michelin](https://appshunter.io/developer/994145743) |

## What reviewers say

### Converter, Calculator & Tools

[App page](https://appshunter.io/ios/app/converter-calculator-and-tools/id6692620656)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $1.99 | one-time |


### OpLink

[App page](https://appshunter.io/ios/app/oplink/id6749260445)

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

**In-app purchases:** none


## Frequently asked questions

### Is Converter, Calculator & Tools free?

Converter, Calculator & Tools is free to download, with in-app purchases available.

### Is OpLink free?

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

### Do Converter, Calculator & Tools or OpLink have ads?

Neither Converter, Calculator & Tools nor OpLink shows ads.

### Which is updated more often, Converter, Calculator & Tools or OpLink?

Converter, Calculator & Tools ships an update every 2 months, and OpLink fortnightly. Most recently, Converter, Calculator & Tools was updated on October 25, 2026 and OpLink on October 28, 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.*