Primus vs SOFAST Groundwork
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Primus
This app provides a 26-week Special Forces training program designed to prepare users for military selection. It combines daily running, swimming, and strength workouts with adaptable progressions and endurance programming.
- 26-week Special Forces training program
- Daily running, swimming, and strength workouts
- Endurance programming
- Bodyweight strength exercises
- Flexible lifting blocks
- Scalable progressions
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Most fitness apps are built so you never fail. Primus is built so you don't fail when it matters. This is a 26-week Special Forces training program modeled on the real demands of BUD/S, SWCC, and military selection — two sessions a day, six days a week, combining running, swimming, and strength work into one uncompromising progression. WHAT'S INSIDE Two daily workouts blending running, swimming, and strength Endurance programming that drops your mile times and builds real pool confidence Bodyweight strength: push-ups, pull-ups, sit-ups, and core work at selection volume Flexible lifting blocks that adapt to whatever equipment you have Scalable progressions — adjust to your level without ever losing intensity WHO IT'S FOR Future candidates for Navy SEAL, SWCC, and other special warfare pipelines Athletes who want military-style training with a real structure behind it Anyone done with casual fitness and ready to build discipline, grit, and peak output A WARNING This is not a casual fitness app. Primus demands serious commitment, time, and effort. If you're not ready for an intensive program, start smaller and come back when you are. MINIMUM STANDARDS TO BEGIN Run 2 miles Swim 500 yards 3 pull-ups, 10 push-ups, 15 sit-ups Below that? Prepare first. The program will still be here. 26 weeks from now, you'll either be selection-ready or you'll know exactly why not. Start Week 1 today. LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
SOFAST Groundwork
This app is a workout companion for tactical athletes, offering a variety of training programs and tracking capabilities. Log workouts, participate in daily challenges, and connect with a community of like-minded individuals. Unlock advanced features and analytics with a premium subscription.
- Workout logging with 3 tiers
- Hero and benchmark workouts
- Daily workout of the day
- Built-in interval timer
- Global leaderboards
- Community whiteboard
- Personal record card sharing
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Today has a name. AI coaching is on Pro. Built by a Green Beret, not a marketing team. SOFAST Groundwork puts ruck, strength, and conditioning in your pocket: - On a sourced memorial date, every name is read and the group does one workout. That day stays free. - A full tactical workout library, 3 tiers each — scale to your level - Leaderboard to compete with your team - Earn rewards for showing up - Every session logged The work is the standard. ——— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.tmsofast.com/privacy Subscriptions are auto-renewable. Cancel anytime in your Apple ID account settings. By subscribing you agree to our Terms of Use (EULA) and Privacy Policy. Terms of Use: https://shop.tmsofast.com/policies/terms-of-service Privacy Policy: https://shop.tmsofast.com/policies/privacy-policy. Green Beret workout.
Screenshots
Verdict
The clearest difference is in-app purchases: Primus at none against SOFAST Groundwork's 2. SOFAST Groundwork's advantage is update cadence (every 10 days vs every 3 weeks) and ratings volume (5 vs 1). On price, rating, review sentiment and ads 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
Both are free to download. SOFAST Groundwork sells 2 in-app purchases, starting at $4.99 per month. Primus asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Primus against 5.0 for SOFAST Groundwork. That said, the two scores are not equally well evidenced: SOFAST Groundwork has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Primus ships an update every 3 weeks, SOFAST Groundwork every 10 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Primus | SOFAST Groundwork |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (5 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 3 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod, Apple Watch — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 29 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Flywheel Limited | JEFFREY LEE ADAMS |
Customer experience
Primus
SOFAST Groundwork
In-app purchases
Primus
No in-app purchases
SOFAST Groundwork
- Groundwork Pro Monthly$4.991 Month
- Groundwork Pro Annual$34.991 Year
Questions
Is Primus free?
Is SOFAST Groundwork free?
Which has better reviews, Primus or SOFAST Groundwork?
Do Primus or SOFAST Groundwork have ads?
Which is updated more often, Primus or SOFAST Groundwork?
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