# SSI vs Astra Athletic

The clearest difference is in-app purchases: SSI at none against Astra Athletic's 7. SSI also leads on iOS requirement (14.0 vs 18.0). Astra Athletic's advantage is update cadence (every 4 days vs every 7 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Astra Athletic sells 7 in-app purchases, starting at $4.99 per month. SSI asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for SSI against 5.0 for Astra Athletic. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

SSI ships an update every 7 months, Astra Athletic every 4 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SSI | Astra Athletic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/ssi/id1056174897/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/astra-athletic/id6769266808/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Size | 72 MB | 11 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Dartfish](https://appshunter.io/developer/369126118) | [David Wan](https://appshunter.io/developer/1896645683) |

## What reviewers say

### SSI

[App page](https://appshunter.io/ios/app/ssi/id1056174897)

This app provides a video technology solution for the Singapore sporting ecosystem. It offers a library of data-enriched videos for drills, analysis, and competition archives to support athletes and coaches.

**Highlights:** Video technology solution, Data-enriched video library, Drills, analysis, and competition archives, Support for Team Singapore athletes, Private content access for registered users, Public content availability

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

**In-app purchases:** none


### Astra Athletic

[App page](https://appshunter.io/ios/app/astra-athletic/id6769266808)

This app analyzes sprint and jump performance from video, providing detailed metrics like acceleration, max velocity, and force-velocity profiles. It supports athletes and coaches in monitoring performance and making data-driven training decisions.

**Highlights:** Sprint acceleration and max velocity analysis, Jump testing (RSI, CMJ, etc.), Force-velocity profile tools, Video import and recording, Athlete profile and coach mode, Training history tracking, Apple Health integration

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Astra Pro Monthly | $4.99 | per month |
| Astra Pro+ Monthly | $6.99 | per month |
| Astra Ultra Monthly | $34.99 | per month |
| Astra Ultra+ Monthly | $39.99 | per month |
| Astra Pro Yearly | $49.99 | per year |
| Astra Pro+ Yearly | $69.99 | per year |
| Astra Pose Token | $3.99 | one-time |


## Frequently asked questions

### Is SSI free?

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

### Is Astra Athletic free?

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

### Which has better reviews, SSI or Astra Athletic?

SSI and Astra Athletic are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do SSI or Astra Athletic have ads?

Neither SSI nor Astra Athletic shows ads.

### Which is updated more often, SSI or Astra Athletic?

SSI ships an update every 7 months, and Astra Athletic every 4 days. Most recently, SSI was updated on October 29, 2026 and Astra Athletic on October 25, 2026.

---

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