Estimated 1RM
Calculated with the Epley formula from every working set. Example: 100 kg × 5 reps comes out to about 117 kg.
Lifting · Strength training · Heavy lifts
Your gym log for heavy lifts
Squat, deadlift, bench, press and the Olympic lifts: Kreidebuch remembers every set, spots new PRs and plans your next session. No spreadsheet, no scraps of paper.
Log sets
Every set, exactly the way you did it
Weight and reps for each set, plus RPE, warm-up, drop set or failed attempt. A scheme like 5x5 or 10-9-8-7-6 creates all the sets at once.
- "Repeat last set" and "Same as last time" save you typing
- The rest timer starts when you check off a set
- The plate calculator shows which plates go on each side
- Session volume in kg, without warm-up sets
- Your own exercises and variations like the pause squat or deficit deadlift
Personal bests
1RM, 3RM, 5RM: every PR counts
Kreidebuch stores your personal best for every rep count on every lift. A new 5RM is a PR, even if your 1RM stays the same. It also estimates your 1RM from your sets.
Percentage table
Your working weights from 60 to 95% of your 1RM at a glance, no calculator needed.
Progress chart Premium
How your 1RM develops over months, with all personal bests for every rep count.
Programs Premium
Strength programs that adapt to you
Pick one to four lifts, your training days and a method. Kreidebuch puts the sessions in your plan and calculates the weights. After every session, it adjusts the next one.
Linear 5×5
Five sets of five reps. Hit them all and the weight goes up next time: 2.5 kg on pressing and pulling lifts, 5 kg on the squat and deadlift. Great for beginners and for getting back into it.
5/3/1 wave
Four-session waves based on a training max (90% of your 1RM): 5s, 3s, 5-3-1 and a deload. The last set goes for as many reps as possible, and the result drives the next wave.
Percentage block
From volume to strength: from 5 × 5 at 70% up to doubles at 90%, finishing with a new 1RM attempt. If a session doesn't go to plan, the next one is set 5% lighter.
Level
How strong are you compared to others?
For eleven lifts, Kreidebuch shows where you stand relative to your body weight, separately for women and men. The strength score combines squat, deadlift, press, clean and snatch into one number from 0 to 100.
See strength standards| Back Squat, men | from × body weight |
|---|---|
| Elite | 2.25 × |
| Advanced | 1.75 × |
| Intermediate | 1.25 × |
| Beginner | 0.9 × |
Technique
The big lifts explained
Step-by-step form, common mistakes and how to fix them, and easier variations.
- Back SquatSquat, bar on upper back
- DeadliftBarbell lift from the floor to standing
- Bench PressLying barbell press
- Strict PressStanding shoulder press
- Front SquatSquat, bar in front rack
- CleanBar from floor to shoulders, caught in a full squat
- SnatchBar from floor to overhead, caught in a full squat
- Clean & JerkClean to the shoulders, then jerk overhead
- Push PressShoulder press with leg drive
Questions about strength training
How does Kreidebuch calculate my 1RM?
From every weighted set, Kreidebuch estimates your 1RM using the Epley formula: weight × (1 + reps ÷ 30). So 100 kg for 5 reps comes out to about 117 kg. If you've logged a true 1RM, it always takes priority over the estimate. The estimate is never set higher than necessary, so you don't end up with unrealistic numbers.
Can I log RPE, warm-up sets and drop sets?
Yes. Any set can be marked as a warm-up, drop set or failed attempt, and you can show RPE with one tap. Warm-up sets don't count toward personal bests or volume.
Is there a rest timer between sets?
Yes. When you check off a set, the rest timer starts automatically. You change its length with one tap.
Which strength programs are there?
Linear 5×5, the 5/3/1 wave and a percentage block, each for one to four lifts on the training days you choose. The weights adjust after every session: hit all your reps and the weight goes up; miss a session and it's repeated or set lighter. Strength programs are part of Premium.
Can I train in pounds?
Yes. Set kg or lb in your profile. The plate calculator then works with the matching plates.
Do I need a box or a particular gym?
No. Kreidebuch works in any gym, in your home gym and on the road. You can add your own exercises any time.
Hevy, Strong, JEFIT and other workout logs side by side: Workout log apps compared.
Put your next PR in the book.
Open the app
Kreidebuch starts invite-only: you get a link from your box or from people who already use it.