New in version 1.6

Your recovery
decides the day.

Every morning, a readiness score you can follow, built from HRV, sleep and resting heart rate. From it, the session that fits today, and a coach that knows your history.

14-day trial · iPhone with iOS 17.6+

RefineSimple Today tab with readiness 78 and the daily recommendation

Coach

Readiness 78. Progress today where you have room.

Transparent formula, no black box

Data from Apple Health

In English and German

Built by one lifter, solo

The principle

Adapts. Explains itself. You decide.

01

Adapts

The best version of your plan today, not plan A on repeat. Recovered means progress, tired means dosed.

02

Explains itself

Every change comes with a reason: which numbers are dragging today and what that means for your sets.

03

You decide

The app suggests, you have the final say. One tap brings back the original plan.

Readiness

A score you can actually follow.

HRV, sleep, resting heart rate and your training load become your readiness score every morning. No AI black box, just a transparent formula. When it's low, the app suggests less volume today. When it's high, you use the window. Move the sliders yourself.

  • Recovered

    Your heavy day, with room for a progression attempt.

  • Tired

    Fewer sets per exercise or a real rest day.

  • Override

    One tap and you train the original plan.

Training Readiness

Solid

77/ 100
HRV78
Sleep80
Resting HR75
Load70

Coach

Progress today where you have room. No heroics needed.

Plan as scheduled.

Simplified demo. In the app, the score works with your own numbers.

Coach 2.0

A coach that remembers.

The coach knows your plan, your readiness and your recent sets. Instead of dropping advice into a chat, it suggests concrete changes as a card. You accept or decline. Calm, honest, no motivational slogans.

  • Suggestions as cards

    Swap an exercise, move a session, set targets, deload. Accept, decline, undo anytime.

  • A recap after every session

    Analysis, result, takeaway, with your numbers compared to the last matching session.

  • Memory

    It remembers what you tell it, checks in a few days later and reaches out when you miss a session.

RefineSimple coach chat with an exercise swap card

Exercise swap

Bench PressIncline DB Press

Applies to all open sessions this week

A more neutral grip takes load off the front shoulder, the chest stimulus stays.

Coach recap · Upper A

Analysis
Bench press 4 × 6 at 90 kg, every set at RIR 2.
Result
+2.5 kg compared to the last Upper A.
Takeaway
Chest is above its target range this week. Hold next week instead of adding.

Recovery effect

See what recovery does for you.

History compares how you perform on recovered days with how you perform on tired ones. From your own data, not from a study. It turns “listen to your body” into a number.

+9.5%

Readiness 70+

−3.5%

Readiness below 55

0 %40557085

Performance per exercise against your average, by readiness on training day

Sample values from the demo data. Your own analysis appears after 8 sessions with readiness.

RefineSimple History with block progress and recovery effect

Plan & tracking

Serious tracking. With a plan behind it.

Mesocycle programming with progression and deload, exercise rotation and a length you choose, from 4 to 10 weeks. The Plan tab shows every week with a status per session.

  • Pre-filled sets

    Weight, reps and RIR, adjusted to your readiness.

  • Volume per muscle

    Weekly sets against MEV–MAV ranges. Too little and too much, visible at once.

  • Honest PRs

    Detected automatically via e1RM, rep PRs included.

RefineSimple Plan tab with mesocycle and status per session
RefineSimple sets per muscle, recent PRs and exercise trends

iPhone Duo

Made for iPhone Duo.

Half open, RefineSimple becomes bench mode. Fully open, your sets sit on the left and the reason for this exact suggestion on the right.

Half open: A big rest timer on top, input below. Set it down, do the set, log it.

Duo screenshots show the German interface.

Pricing

Experience it, then decide.

RefineSimple Pro unlocks readiness steering, progression and the coach. You get the full experience for 14 days, after that the subscription only runs if you stay.

Monthly

€12.99

per month

Yearly

Save 49%

€79.99

per year · works out to €6.67 a month

Your first workout and your first messages to the coach work without a subscription.

Download on the App Store

Cancel anytime in the App Store.

Questions

What you might want to know.

Is the readiness score AI?
No. The score is a transparent formula from HRV, sleep, resting heart rate and training load. AI only powers the conversational coach, and it gives a reason for every suggestion.
Do I need an Apple Watch?
No. Plan, logging and coach work on the iPhone alone. For readiness steering, RefineSimple needs HRV and sleep data from Apple Health. An Apple Watch or a compatible tracker provides that.
What if I want to train hard anyway?
You always have the final say. Readiness suggests, you override with one tap. If you want to go in despite low readiness, the app goes along and doses volume rather than holding you back.
Does RefineSimple run on iPhone Duo?
Yes. Half open you get bench mode with a big rest timer, fully open the set table with the reasoning next to it. On every other iPhone the app works as usual.
Does my cardio count?
Your cardio sessions from Apple Health show up on the Today tab. We deliberately keep them out of the readiness score: HRV and resting heart rate already reflect cardio load, counting it twice would be dishonest. After a hard session you do get a hint to go a bit easier today.
What if I don't have recovery data?
The app still works: you plan, log and talk to the coach as usual. Readiness uses default values until HRV and sleep are available, and switches to your data automatically once it's there.
How do I cancel?
Anytime in your App Store settings, no notice period, no contact form. The subscription runs until the end of the paid period and then doesn't renew.
What happens to my health data?
RefineSimple reads HRV, sleep and resting heart rate from Apple Health. Relevant values such as your readiness are processed for your coach's answers. Exactly what is used and how is in the privacy policy.
Is RefineSimple available in English?
Yes. Coach, exercise names and interface are fully available in English and German. Set the language right in the app.

Give your training what it deserves.