# Sightly vs 随传：自在互联，随传而至

The clearest difference is in-app purchases: 随传：自在互联，随传而至 at none against Sightly's 2. 随传：自在互联，随传而至 also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, 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. 随传：自在互联，随传而至 asks for nothing beyond the download.

Sightly ships an update weekly, 随传：自在互联，随传而至 every 2 weeks. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Sightly | 随传：自在互联，随传而至 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sightly-myopia-tracker/id6775443515/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 18 MB | 38 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DiverAxis Technology (Chengdu) Co., Ltd.](https://appshunter.io/developer/6775443517) | [兆祥 李](https://appshunter.io/developer/1473079429) |

## What reviewers say

### Sightly

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

Organize your child's eye health records in one private place. Track exam dates, measurements, prescription notes, and axial length trends. Set reminders for follow-ups and export summaries for doctor visits.

**Highlights:** Child eye health profiles, Record vision, refraction, axial length, Archive exam reports, Review long-term trends, Set follow-up reminders, Export PDF summaries

**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 |


### 随传：自在互联，随传而至

[App page](https://appshunter.io/ios/app/id6786990499)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sightly free?

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

### Is 随传：自在互联，随传而至 free?

随传：自在互联，随传而至 is free to download, with no in-app purchases.

### Do Sightly or 随传：自在互联，随传而至 have ads?

Neither Sightly nor 随传：自在互联，随传而至 shows ads.

### Which is updated more often, Sightly or 随传：自在互联，随传而至?

Sightly ships an update weekly, and 随传：自在互联，随传而至 every 2 weeks. Most recently, Sightly was updated on October 16, 2026 and 随传：自在互联，随传而至 on October 2, 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.*