# JONG Personal Training vs Studio13 by Sasja

JONG Personal Training and Studio13 by Sasja 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.

JONG Personal Training ships an update every 3 months, Studio13 by Sasja every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | JONG Personal Training | Studio13 by Sasja |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Size | 213 MB | 40 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Jong Personal Training](https://appshunter.io/developer/1724386362) | [Trainin](https://appshunter.io/developer/1732652497) |

## What reviewers say

### JONG Personal Training

[App page](https://appshunter.io/ios/app/jong-personal-training/id1200478007)

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

**In-app purchases:** none


### Studio13 by Sasja

[App page](https://appshunter.io/ios/app/studio13-by-sasja/id6759001828)

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

**In-app purchases:** none


## Frequently asked questions

### Is JONG Personal Training free?

JONG Personal Training is free to download, with no in-app purchases.

### Is Studio13 by Sasja free?

Studio13 by Sasja is free to download, with no in-app purchases.

### Do JONG Personal Training or Studio13 by Sasja have ads?

Neither JONG Personal Training nor Studio13 by Sasja shows ads.

### Which is updated more often, JONG Personal Training or Studio13 by Sasja?

JONG Personal Training ships an update every 3 months, and Studio13 by Sasja every 4 months. Most recently, JONG Personal Training was updated on October 24, 2026 and Studio13 by Sasja on October 24, 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.*