# WTAI vs Sightly

The clearest difference is in-app purchases: WTAI at none against Sightly's 2. WTAI also leads on iOS requirement (13.0 vs 17.0). Sightly's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Sightly sells 2 in-app purchases, starting at $7.99 per year. WTAI asks for nothing beyond the download.

WTAI ships an update every 3 weeks, Sightly every 5 days. The most recent releases landed on August 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | WTAI | Sightly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 24 MB | 18 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Waytronic Electronics Company Limited](https://appshunter.io/developer/1103554270) | [Chengdu DiverAxis Technology Co., Ltd.](https://appshunter.io/developer/6775443517) |

## What reviewers say

### WTAI

[App page](https://appshunter.io/ios/app/wtai/id6744948362)

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

**In-app purchases:** none


### Sightly

[App page](https://appshunter.io/ios/app/sightly-myopia-tracker/id6775443515)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sightly Plus Yearly | $7.99 | per year |
| Sightio Plus Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is WTAI free?

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

### Is Sightly free?

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

### Do WTAI or Sightly have ads?

Neither WTAI nor Sightly shows ads.

### Which is updated more often, WTAI or Sightly?

WTAI ships an update every 3 weeks, and Sightly every 5 days. Most recently, WTAI was updated on August 21, 2026 and Sightly on September 12, 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.*