Hey everyone, I'm Jürgen. Background: licensed fitness trainer in Germany, also a music composer, also apparently an indie iOS developer now. Iron Progress is the result of a year of nights and weekends because I couldn't find a strength-training app that actually worked for me. The angle that matters most: most apps log. Iron Progress tries to tell you what to do in the next session. The strength standards are adjusted for age and bodyweight (a 22yo and a 55yo benching 90kg aren't the same accomplishment). Volume tracking uses Israetel's discrete MEV/MAV/MRV scale per muscle group. There's a 5-factor recovery model behind the deload advisor. A detail I'm probably too proud of: rest-timer voice cues that work on a locked screen. The app speaks "Go, next set: 80 kilos, 8 reps, RIR 2" through your phone speaker so you don't have to look at it between sets. 100% on-device. No account, no analytics, no third-party SDKs. iCloud sync is optional and goes into your own iCloud database; I never see anything. Free version is the full logging engine. Pro (€3.99/mo or €29.99/yr after a 14-day trial) adds the deeper analytics and the sync. Feedback is what I'm here for, especially methodology questions. Happy to defend or fix anything. Ask me anything.

Iron Progress

Train smart. Track what matters.

Train smart. Track what matters.