Temper — Strength Logging for Android

Tempered, one set at a time.

Steel gets strong through heat and rest. So do you.

Log fast, bank each set, and watch your records climb with Spark adding to your fire.

Coming Soon to Android

Try Temper Get Launch Updates In DevelopmentBuilt by Temper — What is it?An adaptive training method, coming later.

Try Temper

Bank a set, earn a record, rest, and see what Spark suggests next.

Preview · the Train redesign in progress

Train: Bench Press with warm-ups and a 215 × 5 set banked, and the next set ready at 225 pounds for 5 with a Bank button.

Tap through it.Bank the 225 × 5 set. It’s a new 5-rep best. Tap Train again to start over.

A preview with sample data. Your taps stay on this page and aren’t saved.

Freestyle. Guide your own training. Bring your program or choose your lifts as you go.

Spark

One Spark at a Time

Short prompts, one at a time: a quick energy check-in before you lift, a fiery note when you set a record. Beat your best for a rep count and the set lights up: the PR chip lands and sparks fly. Swipe a prompt away and it’s gone.

Bench PressLift 1 / 4
2 Min In
Spark

How’s your energy today?

Tap the pill.
Back SquatLift 2 / 4
24 Min In
Tap the record to fire it again.

From Tracking to Programming

Temper calculates your records and tracks effort today. Built by Temper will connect those observations to adaptive programming.

Today · Freestyle

  • Today

    Records by Rep

    Temper calculates separate bests for each rep count from your working sets—and flags them as you lift.

  • Today

    Effort, Set by Set

    Temper records optional RIR on each working set, right from the Rest screen.

In Development · Built by Temper

  • In Development

    Progressive Overload¹

    BBT is being built to evaluate load and rep progression using completed work, performance trends and optional RIR.

  • In Development

    Volume and Rep Schemes¹

    Planned BBT algorithms will evaluate set volume and rep schemes against your goals, training history and available time.

  • In Development

    Adaptive Rest

    BBT is being designed to evaluate rest adjustments alongside load, reps and reported effort.

  • In Development

    Rolling Training Cycles

    BBT is being built to plan successive sessions without requiring the training cycle to repeat every seven days.

What is Built by Temper?

1 BBT’s development draws on resistance-training research, including ACSM’s 2026 position stand. The guidance does not validate Temper’s algorithms. Currier et al. (2026), Medicine & Science in Sports & Exercise 58(4):851–872 · Research note

Also in Freestyle today: supersets, a plate calculator and your own lift versions. No streaks, ever: every set you bank still counts.

In Development · Coming Later

What’s Coming

Still in the Forge

Three things still heating. None ship yet; we’ll show each one when it’s ready.

Coming Later

Built by Temper

Progressive overload. Beyond a fixed weekly split.

An adaptive training method in development. Your goals and completed training guide adjustments to load, reps, volume and rest—with training cycles that don’t have to reset every seven days.

What is Built by Temper?
Coming Later

Spark Intelligence

Reads your log, not your mind.

Patterns and suggested adjustments from what you log, one prompt at a time.

More on Spark Intelligence
Coming Later

Temper Sync AI

Zoom out. You press Send.

An optional AI review of your history and goals, beyond today’s sets.

More on Temper Sync AI

Hear When It Lands

Temper is coming to Android. Email us and we’ll tell you when it’s out.

support@tempersync.com