# Formula Conversion vs Locate ISS

The clearest difference is in-app purchases: Locate ISS at none against Formula Conversion's 1. Formula Conversion's advantage is device support (3 vs 1) and iOS requirement (14.1 vs 18.2). On price and ads there is nothing between them.

Both are free to download. Formula Conversion sells 1 one-off in-app purchase. Locate ISS asks for nothing beyond the download.

## The numbers

| Metric | Formula Conversion | Locate ISS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 26 months | — |
| Size | 2 MB | 4 MB |
| Requires iOS | **14.1** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Janek Soomets](https://appshunter.io/developer/1315295062) | [Robert Secrest](https://appshunter.io/developer/1800997706) |

## What reviewers say

### Formula Conversion

[App page](https://appshunter.io/ios/app/formula-conversion/id1586539965)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Formula Conversion | $3.99 | one-time |


### Locate ISS

[App page](https://appshunter.io/ios/app/locate-iss/id6743140192)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Formula Conversion free?

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

### Is Locate ISS free?

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

### Do Formula Conversion or Locate ISS have ads?

Neither Formula Conversion nor Locate ISS shows ads.

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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.*