# Bolt Torque Spec Calc vs Voltary

The clearest difference is price: Voltary at Free against Bolt Torque Spec Calc's $4.99. Voltary also leads on iOS requirement (13.0 vs 17.0). Bolt Torque Spec Calc's advantage is ads (none vs shown) and chart position (#195 vs unranked). On in-app purchases and device support there is nothing between them.

Voltary is free to download; Bolt Torque Spec Calc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Bolt Torque Spec Calc | Voltary |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Best chart rank | **#195** | — |
| Size | 1 MB | 45 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) | [Hasanain Alhamedi](https://appshunter.io/developer/6777917433) |

## What reviewers say

### Bolt Torque Spec Calc

[App page](https://appshunter.io/ios/app/bolt-torque-spec-calc/id6760930975)

**Currently charting:** #195 Top Paid · Utilities (US App Store)

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

**In-app purchases:** none


### Voltary

[App page](https://appshunter.io/ios/app/voltary/id6778161465)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bolt Torque Spec Calc free?

Bolt Torque Spec Calc costs $4.99, with no in-app purchases.

### Is Voltary free?

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

### Do Bolt Torque Spec Calc or Voltary have ads?

Voltary shows ads; Bolt Torque Spec Calc does not.

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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.*