# ディアビSST vs WAIS

The clearest difference is in-app purchases: ディアビSST at none against WAIS's 2. ディアビSST also leads on update cadence (daily vs every 8 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. WAIS sells 2 in-app purchases, starting at $2.99 per month. ディアビSST asks for nothing beyond the download.

ディアビSST ships an update daily, WAIS every 8 days. The most recent releases landed on October 31, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | ディアビSST | WAIS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 8 days |
| Size | 92 MB | 10 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TECH Planning LLC.](https://appshunter.io/developer/1604758659) | [Burning Tribe](https://appshunter.io/developer/1888072646) |

## What reviewers say

### ディアビSST

[App page](https://appshunter.io/ios/app/sst/id6761046886)

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

**In-app purchases:** none


### WAIS

[App page](https://appshunter.io/ios/app/wais-4/id6763717128)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WAIS4 プレミアム | $2.99 | per month |
| プレミアム（年額） | $29.99 | per year |


## Frequently asked questions

### Is ディアビSST free?

ディアビSST is free to download, with no in-app purchases.

### Is WAIS free?

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

### Do ディアビSST or WAIS have ads?

Neither ディアビSST nor WAIS shows ads.

### Which is updated more often, ディアビSST or WAIS?

ディアビSST ships an update daily, and WAIS every 8 days. Most recently, ディアビSST was updated on October 31, 2026 and WAIS on November 9, 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.*