USPA SIM vs Rhythm Skydiving 401
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
USPA SIM
This manual outlines the United States Parachute Association's basic safety requirements and recommendations for safe skydiving. It details programs for recognizing individual expertise and proficiency in the sport. Users should consult additional resources for clarification.
- Basic Safety Requirements
- Skydiving recommendations
- Individual proficiency programs
- Information for skydivers
- USPA administered programs
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USPA Skydiver's Information Manual (SIM) The United States Parachute Association's Skydiver's Information Manual provides basic skydiving standards (the Basic Safety Requirements) and recommendations agreed upon by USPA members for the conduct of safe and enjoyable skydiving. It also describes the programs USPA administers to recognize individuals for their expertise, ability to train others, and proficiency or tenure in the sport. Although the SIM provides much basic information for skydivers, each jumper should research further and consult USPA and industry officials, documents, and other produced media, as well as other reliable individuals for clarification and additional information. USPA MAKES NO WARRANTIES, EXPRESSED OR IMPLIED, AS TO THE INFORMATION SET FORTH IN THIS MANUAL. PEOPLE RELYING THEREON DO SO AT THEIR OWN RISK.
Rhythm Skydiving 401
This app serves as a comprehensive rhythm coach for skydiving enthusiasts. It offers a vast library of articles, videos, and interactive tools to learn and master 4-way and 8-way formations. Users can download content for offline review and utilize features like a dive timer and draw generator.
- Extensive video library with offline download
- Interactive flashcards for formation learning
- Color-coded continuity plans
- Advanced video player with frame-by-frame control
- Customizable random draw generator
- In-app direct contact with instructors
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Rhythm Skydiving 401 for iPhone – A Rhythm Coach in the palm of your hand! This is the ultimate app for 4way and 8way enthusiasts at any level, brought to you by SDC Rhythm XP. Sign up now to get access to tons of content, including articles, flash cards, continuity plans, pictures and over 200 videos. Download videos to your phone for review offline at the dropzone. Pause, adjust speed, and move frame by frame with the advanced video player. Use the filter and search bar to see just the content you want. An annual subscription gives you unlimited access to Rhythm’s constantly updating content including: * The Basics (FREE) - Articles and resources about how to learn 4 way, how to form and plan a team, performance tips, bodyflight techniques - Rhythm continuity plans, color coded by slot for both beginner and advanced block techniques, including key inter-pictures - Interactive flash cards to help you learn the formations * Blocks - Rhythm best of block videos in air - Video of each block in the tunnel, including color coded helmets, lines and intermediate pictures overlayed, including both beginner and advanced block techniques * Randoms - Rhythm in air examples and color coded tunnel examples * Exits - Rhythm best of exit in air videos - Detailed pictures in the mockup of each exit, including color coded helmets and foot placement, inside and outside the mockup - Video of Rhythm demonstrating each exit from the mockup both from inside and outside - Chart of recommended transition exits * Rhythm training videos - Exclusive access to select Rhythm training and competition dives and tunnel video, with new content added every month. * Dive Timer (FREE) - Dive timer designed specifically with 4way and 8way in mind. Enter the formation to view time at each point, and see a filtered list of each point. Click anywhere on the screen to log points for easy use while looking at the TV screen. * Draw Generator (FREE) - Create random draws, view, export and share color-coded diagrams for each dive - Create specific parameters to ‘customize’ your random draw (i.e. all dives that start with a block as the first point or specify a block and fill in at random around it). * Ask Rhythm (FREE) - Have a question? Contact Rhythm directly through the app for answers. * News and Calendar (FREE) - Keep up to date with Rhythm, news about the Rhythm apps and learn about upcoming events Subscription Information ------------------------ Rhythm 401 is supported through two auto-renewing subscriptions which you can choose to purchase within the app. • The subscriptions are called '401 Annual Subscription' and '801 Annual Subscription' • They are both annual subscriptions. They give you access to all the 4way and 8way content in the app, and new 4way and 8way training/competition videos as they are released • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Terms of use are available at https://rhythmskydiving.com/app-terms-and-conditions • Privacy policy is available at https://rhythmskydiving.com/app-privacy-policy
Screenshots
Verdict
The clearest difference is rating: Rhythm Skydiving 401 at 5.0 against USPA SIM's 3.6. Rhythm Skydiving 401 also leads on update cadence (every 2 months vs every 33 months) and review sentiment (89% vs 77%). USPA SIM's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 15.0). On price, ads and device support 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. Rhythm Skydiving 401 sells 2 in-app purchases, starting at $49.99 per year. USPA SIM asks for nothing beyond the download.
Rhythm Skydiving 401 holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Rhythm Skydiving 401 has 150 ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 77% of USPA SIM's written reviews are positive against 89% of Rhythm Skydiving 401's.
USPA SIM ships an update every 33 months, Rhythm Skydiving 401 every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | USPA SIM | Rhythm Skydiving 401 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (28 ratings) | 5.0 (150 ratings) — better |
| Positive reviews | 77.3% of reviews | 89.5% of reviews — better |
| Number of ratings | 28 | 150 — better |
| Update frequency | Every 33 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 7 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | United States Parachute Association | Rhythm Skydiving |
Customer experience
USPA SIM
Rhythm Skydiving 401
In-app purchases
USPA SIM
No in-app purchases
Rhythm Skydiving 401
- Rhythm 8way Subscription7 Days trial$49.991 Year
- Rhythm 4way Subscription7 Days trial$99.991 Year







