# smartPerform BYOD vs Slate

The clearest difference is in-app purchases: smartPerform BYOD at none against Slate's 2. smartPerform BYOD also leads on device support (3 vs 1) and iOS requirement (13.0 vs 26.0). Slate's advantage is update cadence (weekly vs every 4 months). On price and ads there is nothing between them.

Both are free to download. Slate sells 2 in-app purchases, starting at $29.99 per year. smartPerform BYOD asks for nothing beyond the download.

smartPerform BYOD ships an update every 4 months, Slate weekly. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | smartPerform BYOD | Slate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 21 MB | 16 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Immersion7 GmbH](https://appshunter.io/developer/1149336764) | [Tools for Divers, LLC](https://appshunter.io/developer/1880150704) |

## What reviewers say

### smartPerform BYOD

[App page](https://appshunter.io/ios/app/smartperform-byod/id1149336765)

**Features:** macOS Compatibility

**In-app purchases:** none


### Slate

[App page](https://appshunter.io/ios/app/slate-dive-logbook/id6759878835)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Slate Premium Annual | $29.99 | per year |
| Slate Premium Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is smartPerform BYOD free?

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

### Is Slate free?

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

### Do smartPerform BYOD or Slate have ads?

Neither smartPerform BYOD nor Slate shows ads.

### Which is updated more often, smartPerform BYOD or Slate?

smartPerform BYOD ships an update every 4 months, and Slate weekly. Most recently, smartPerform BYOD was updated on October 12, 2026 and Slate on October 24, 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.*