# Body Log: Core Circuit — Ab workout & plank timer

> Ab workout & plank timer (iPhone/iPad app by Spruzzo Labs Inc..)

- Source: https://appshunter.io/ios/app/body-log-core-circuit/id6772646584 (this page in markdown: same URL + `.md`)
- Developer: [Spruzzo Labs Inc.](https://appshunter.io/developer/1761259285)
- Category: Health & Fitness, Productivity
- Price: Free
- Rating: 3.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 4 MB
- Languages: American English
- Released: 2026-05-29
- Data updated: 2026-11-09
- User reviews in markdown: https://appshunter.io/ios/app/body-log-core-circuit/id6772646584/reviews.md

## What is Body Log?

Core Circuit is a logbook for your core. Pick a plan or build your own circuit from 47 moves, run it once a day, and watch the year fill in.

Everything is free and works offline. Your sessions stay on your phone, and there's no account to make.

A circuit a day
• Five ready-made plans, from Foundation to Advanced
• 47 core moves: planks, hollow holds, dead bugs, crunches, leg raises and more
• Create your own move when the library doesn't have it
• A how-to guide for every move, with the one cue that fixes your form
• Set a target for every move: seconds for holds, reps for the rest
• Today's dial fills one segment per move

Run it hands-free
• A get-ready countdown starts the clock once you're in position
• Spoken cues for go, halfway, target reached and what's next
• Haptics on every cue, with timed rest between moves
• Each hold moves on by itself when you reach its target
• A Live Activity on the Lock Screen and Dynamic Island while you train

See the work
• A day streak with a grace day, so tonight still counts
• A year heatmap of every day you trained
• Yesterday's best hold or rep set on the home screen
• A Home Screen widget and a daily reminder

Made by Spruzzo Labs. Questions or ideas? hello@spruzzolabs.com

## Is Body Log safe?

Not enough ratings yet to assess Body Log.

## Is Body Log legit?

Body Log: Core Circuit appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Body Log is 65 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/body-log-core-circuit/id6772646584/reviews.md

### 3/5 — A good experience got worse

*2026-11-05*

I for one like using the plank app during the day. It was easy to start and I’d see a timer for that session.

Now, in Circuit I set the plank as the only exercise and bumped it to my goal.  When I came back later I did another plank but the timer continued with my previous time, so it’s difficult to judge how long I was planking this time.

I tried to add Squats to my circuit but it’s not in the list and I can’t manually enter it.

Finally, when I start to plank a timer counts down from 5 seconds but I’m already planking when I hit start, so it would be nice to have that countdown go away.

## Version history (last 3 releases)

### 2.1.0 — 2026-11-08

Make your own moves. Add any hold or rep exercise to the library and put it in your circuit.

New installs start on a clear three-move day, with tips that point the way to the circuit editor.

Every hold now has its own clock, and a hold moves on once you reach its target. The session screen stays quiet until a target lands.

A new typeface and a green accent throughout.

### 2.0.0 — 2026-11-02

Plank is now Body Log: Core Circuit — same app, same history, a lot more to do.

Your daily plank grows into a daily circuit. Pick one of five plans or build your own from 47 core moves, each with its own target in seconds or reps.

Run it hands-free: a get-ready countdown, spoken cues, haptics, rest between moves, and a Live Activity on the Lock Screen.

Every move has a how-to guide, and once you own a move, Core Circuit suggests its harder variant.

Everything is free.

### 1.0 — 2026-05-29

No release notes.

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All apps by Spruzzo Labs Inc.: https://appshunter.io/developer/1761259285

## Related topics

[plank traker](https://appshunter.io/ios/topics/plank-traker) · [plank](https://appshunter.io/ios/topics/plank)

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*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 2026-11-09.*