Comparison

SSI vs Astra Athletic

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SSI

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
Read full description

The Singapore Sports Institute (SSI), as the High Performance system behind Team Singapore is proud to present the SSI Mobile app, an innovative video technology solution available to the Singapore sporting ecosystem. With a comprehensive library of data enriched videos, including drills, analysis and competition archives, the SSI Mobile app is a game changing tool in the support of Team Singapore and local athletes. Registered users (athletes, coaches, scientists and sports administrators) will be provided with a login to access private content, and some content may be available for public access. Download the app now!

About

Astra Athletic

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
Read full description

Astra Athletic is a performance analysis and training management app for coaches and athletes who track speed, jump, force-velocity-power, and training load in one place. Analyze sprint acceleration, max velocity, force-velocity profiles, vertical jumps, RSI, DRI, CMJ, squat jump, and more. Import or record video, mark key frames, review calculated metrics, and save results into organized history views for each athlete. Key Features: Track jump performance: - RSI - 10-5 reactive jump test - DRI - Vertical jump - CMJ - SJ - Asymmetry% - F-V Profile Jump -F-V Profile Sprint - Live Vert Jump logging - Jump height, flight time, ground contact time, relative power, peak power, duty factor, take-off velocity, vertical force, and stiffness Analyze sprint performance: - Normal sprint video analysis - Accel & Vmax sections - FVP Sprint - Split and overlap tools - Sprint timing markers - Velocity, acceleration, GCT, FT, stride rate, estimated vertical force, GCT AI%, FT AI%, duty factor, and force-velocity-power outputs Review history and trends: - Jump, Sprint, Sprint Trend, and Jump Trend history - Saved logs with metric cards - Trend charts - Personal best tracking - PDF report exports - FVP charts for jump and sprint profiles Manage training: - Build S&C and Track training programs - Use a calendar-based program view - Create and reuse templates - Add exercises from the exercise catalog - Track sets, reps, load, rest, RPE, velocity loss, distance, intensity, and sprint times - Log workout RPE and duration Monitor training load: - Weekly and monthly session load - Volume mix - Performance response for CMJ, RSI, and DRI - Monotony and strain - 7D / 28D load - Sprint volume and sprint intensity mix - Jump contacts - S&C volume and intensity mix - Session dose tracking Coach and athlete tools: - Athlete profiles with photos and measurements - Athlete Management - Athlete Dashboard - Leaderboard - Radar-style performance profile - Standard deviation and percentile comparisons - Athlete rankings - Coaching focus cues - Cloud Sync across devices Extra tools: - Stride Length calculator - Mini Hurdles calculator - Intensity Zone calculator - Exercise catalog management Astra Athletic is designed for coaches, sprinters, jumpers, strength coaches, and performance practitioners who want practical field testing, video analysis, training planning, and athlete monitoring in one focused app. *Some advanced tools require Astra Athletic+. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SSI2 screens
Astra Athletic4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
SSI versus Astra Athletic: the parameters behind the verdict, then further details
ParameterSSIAstra Athletic
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 7 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better18.0
Further details — not scored
Size72 MB11 MB
Age rating12+4+
DeveloperDartfishDavid Wan

Customer experience

SSI

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Astra Athletic

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SSI

No in-app purchases

7 purchases

Astra Athletic

Subscriptions6
  • Astra Pro Monthly$4.991 Month
  • Astra Pro+ Monthly$6.991 Month
  • Astra Ultra Monthly$34.991 Month
Show 3 more
  • Astra Ultra+ Monthly$39.991 Month
  • Astra Pro Yearly3 Days trial$49.991 Year
  • Astra Pro+ Yearly3 Days trial$69.991 Year
One-time1
  • Astra Pose Token$3.99

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.

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