# Sinogram Star vs LingoFlow

The clearest difference is price: LingoFlow at Free against Sinogram Star's $19.99. Sinogram Star's advantage is in-app purchases (none vs 2) and iOS requirement (12.1 vs 14.0). On update cadence, ads and device support there is nothing between them.

LingoFlow is free to download; Sinogram Star costs $19.99 up front. LingoFlow sells 2 in-app purchases, starting at $8.99 per month. Sinogram Star asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Sinogram Star | LingoFlow |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 67 MB | 37 MB |
| Requires iOS | **12.1** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Clavis Sinica Limited](https://appshunter.io/developer/1635273455) | [ZAHRA HAKIMI ASIABAR](https://appshunter.io/developer/1799418067) |

## What reviewers say

### Sinogram Star

[App page](https://appshunter.io/ios/app/sinogram-star/id1635273453)

**Features:** macOS Compatibility

**In-app purchases:** none


### LingoFlow

[App page](https://appshunter.io/ios/app/lingoflow-ai-powered-learning/id6742685969)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access (Monthly) | $8.99 | per month |
| Unlimited Access (Yearly) | $59.99 | per year |


## Frequently asked questions

### Is Sinogram Star free?

Sinogram Star costs $19.99, with no in-app purchases.

### Is LingoFlow free?

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

### Do Sinogram Star or LingoFlow have ads?

Neither Sinogram Star nor LingoFlow shows ads.

### Which is updated more often, Sinogram Star or LingoFlow?

Sinogram Star ships an update every 3 weeks, and LingoFlow every 3 weeks. Most recently, Sinogram Star was updated on October 18, 2026 and LingoFlow on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*