# Posture Boost vs Sprint Lightning

Posture Boost and Sprint Lightning are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. Posture Boost sells 2 in-app purchases, starting at $3.99 per 7 days and Sprint Lightning sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Posture Boost | Sprint Lightning |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 13 MB | 12 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Viktor Dubovicky](https://appshunter.io/developer/1894625127) | [Mark Karas](https://appshunter.io/developer/6798080313) |

## What reviewers say

### Posture Boost

[App page](https://appshunter.io/ios/app/posture-boost-align-yourself/id6762546368)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Posture Boost Pro Weekly | $3.99 | per 7 days |
| Posture Boost Pro Yearly | $19.99 | per year |


### Sprint Lightning

[App page](https://appshunter.io/ios/app/sprint-lightning/id6798080311)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sprint Lightning Pro Monthly | $9.99 | per month |
| Sprint Lightning Pro Annually | $69.99 | per year |


## Frequently asked questions

### Is Posture Boost free?

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

### Is Sprint Lightning free?

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

### Do Posture Boost or Sprint Lightning have ads?

Neither Posture Boost nor Sprint Lightning 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.*