# Greyskull — 8 week training program > 8-week weightlifting program generator with automatic 5RM recalculation. (iPhone/iPad app by Victor Rudolfsson.) - Source: https://appshunter.io/ios/app/greyskull/id1449769260 (this page in markdown: same URL + `.md`) - Developer: [Victor Rudolfsson](https://appshunter.io/developer/1440648739) - Category: Health & Fitness - Price: $1.99 - Rating: 2.80/5 from 5 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 11 MB - Languages: American English - Released: 2019-02-18 - Data updated: 2026-10-09 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/greyskull/id1449769260/reviews.md ## What is Greyskull? Greyskull guides you through finding the correct weights for each exercise you choose to incorporate into your Greyskull LP exercise program, and then creates an 8 week program for you. Whenever you reach more than 5 reps of your 5RM of any given exercise, your 5RM (5 rep maximum) will be recalculated on your next exercise. Credits: - Icons by https://icons8.com/ - Background images by https://www.pexels.com/@leon-martinez-714926 and https://unsplash.com/@aloragriffiths The source code for this app is freely available on Github, and contributions are welcome ## Key features - Weight determination for exercises - 8-week program generation - Automatic 5RM recalculation - Exercise progression tracking - Open-source code ## Is Greyskull safe? Not enough ratings yet to assess Greyskull. ## Is Greyskull legit? Greyskull appears to be a legitimate app. The AppsHunter Legitimacy Score for Greyskull is 83 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/greyskull/id1449769260/reviews.md ### 2/5 — Glitches *2021-08-01* The GSLP itself is great however the app bugs out way too often. Weight for certain lifts will increase to astronomical numbers. I appreciate the weight increase in my squat but maybe a trillion plus is a little too much. ### 1/5 — Attractive but non-functional *2021-05-10* Nice looking app. Unfortunately, by the third workout of week one, it upped my Row from 205 to 475. That doesn’t sound right. My squat went from 235 to 3790342797 lbs (literally, this is the warm up sets it picked for me. Work sets were twice that.) The only thing an app like this absolutely must have is the ability to record amounts and pick the next weights. If it can’t do that, then it’s fundamentally broken. Restarting app and phone causes no improvement. Off to find an app that does the same thing but actually works. ### 3/5 — Next workout was over the top *2019-10-17* The programming of my workout is nice, but when I logged in to do the next workout later in the week, it had increased my exercises by THOUSANDS of pounds. Example: I’d completed 15 amrep at 45lbs on my bent over rows, and the next time I went to do the workout, it said to use 47306820lbs!!!! That’s insane. ### 4/5 — Pretty good app, small tweaks would make five stars. *2019-09-16* There are just two things keeping this from 5 stars for me: I would like to back out of a lift to go to the whole menu without closing the app. I would like to be able to look at projected weight for future lifts (even if it’s only two-three weeks out). It could go with the assumption that I complete my lifts perfectly to that point and adjust if I fail along the way. ### 4/5 — Wish there was more customization available *2019-02-23* Wish I could add in a few more additional exercises to track, can only track what they have in the app. **Developer response:** Hi! Custom exercises is a planned feature - in the meantime, you can email any additional exercises you'd like to contact@dangertechnologies.com and we'll add it within a week! ## Frequently asked questions about Greyskull ### What is the Greyskull 8-week training program? Greyskull generates an 8-week training program based on your chosen exercises and helps you find the correct weights. It automatically recalculates your 5-rep maximum (5RM) as you increase your reps. ### How does Greyskull calculate my 5RM? When you achieve more than 5 repetitions of your current 5RM for an exercise, Greyskull will recalculate your 5RM the next time you perform that exercise. ### What devices does Greyskull support? Greyskull is available for iPhone, iPad, and iPod devices. ### How much does Greyskull cost? Greyskull is a paid application, priced at $1.99. ### Is Greyskull suitable for all ages? Greyskull has an age rating of 4+, making it appropriate for a wide range of users. ### When was Greyskull last updated? The latest version of Greyskull was updated on September 23, 2019. ### Can I contribute to Greyskull's development? Yes, the source code for Greyskull is freely available on GitHub, and contributions are welcomed. ### Does Greyskull have ads? No, Greyskull does not contain advertisements. ## Version history (last 2 releases) ### 1.0.1 — 2019-09-23 Support for Imperial Units and custom made exercises is here! ### 1.0 — 2019-02-04 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*