# Knows vs VoltOnoSprint

The clearest difference is in-app purchases: Knows at none against VoltOnoSprint's 4. VoltOnoSprint's advantage is device support (4 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. VoltOnoSprint sells 4 in-app purchases, starting at $0.99 per month. Knows asks for nothing beyond the download.

Knows ships an update every 4 weeks, VoltOnoSprint every 3 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Knows | VoltOnoSprint |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 73 MB |
| Requires iOS | **15.0** | 15.4 |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [SOLTILO Knows Inc](https://appshunter.io/developer/1446529762) | [株式会社S-CADE](https://appshunter.io/developer/1621269147) |

## What reviewers say

### Knows

[App page](https://appshunter.io/ios/app/knows/id1446529763)

**Features:** Vision Pro support

**In-app purchases:** none


### VoltOnoSprint

[App page](https://appshunter.io/ios/app/voltonosprint/id1541520728)

This app connects to a dedicated server to enable timing measurements using a photoelectric sensor. It facilitates accurate time tracking for various sports and activities.

**Highlights:** Photoelectric sensor integration, Dedicated server connection, Accurate time measurement, Sports timing, CSV data export

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1ユーザー+CSV出力プラン | $0.99 | per month |
| 50ユーザー+CSV出力プラン | $3.99 | per month |
| 100ユーザー+CSV出力プラン | $6.99 | per month |
| 1000ユーザー+CSV出力プラン | $9.99 | per month |


## Frequently asked questions

### Is Knows free?

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

### Is VoltOnoSprint free?

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

### Do Knows or VoltOnoSprint have ads?

Neither Knows nor VoltOnoSprint shows ads.

### Which is updated more often, Knows or VoltOnoSprint?

Knows ships an update every 4 weeks, and VoltOnoSprint every 3 weeks. Most recently, Knows was updated on October 26, 2026 and VoltOnoSprint on October 25, 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.*