# ISF Mobile App vs SJ Ballet

ISF Mobile App and SJ Ballet are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ISF Mobile App ships an update every 3 months, SJ Ballet every 2 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | ISF Mobile App | SJ Ballet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isf-mobile-app/id1073046774/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 25 MB | 18 MB |
| Requires iOS | 13.4 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EDU.INK Limited](https://appshunter.io/developer/1499325644) | [Dreamware Limited](https://appshunter.io/developer/892413586) |

## What reviewers say

### ISF Mobile App

[App page](https://appshunter.io/ios/app/isf-mobile-app/id1073046774)

Stay informed about the latest school news, events, and admissions for a K-12 Chinese-English bilingual program. Receive urgent message notifications and access the school calendar.

**Highlights:** School news updates, Event announcements, Admissions information, School calendar access, Urgent message notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### SJ Ballet

[App page](https://appshunter.io/ios/app/sj-ballet/id1419521843)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISF Mobile App free?

ISF Mobile App is free to download, with no in-app purchases.

### Is SJ Ballet free?

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

### Do ISF Mobile App or SJ Ballet have ads?

Neither ISF Mobile App nor SJ Ballet shows ads.

### Which is updated more often, ISF Mobile App or SJ Ballet?

ISF Mobile App ships an update every 3 months, and SJ Ballet every 2 months. Most recently, ISF Mobile App was updated on September 17, 2026 and SJ Ballet on September 10, 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.*