No. MK-677 (ibutamoren) is an orally active growth-hormone secretagogue that was investigated in clinical trials but was never approved by the FDA or EMA and its development was discontinued. It is an unapproved research compound, not a legal supplement ingredient. OptiPin is a tracking tool and does not endorse or facilitate obtaining it.

Does the tracker work offline and keep my data private?

Yes. OptiPin stores everything on-device and works offline. There is no account and no cloud sync requirement, so your log is not uploaded to a server.

MK-677 Tracker for iPhone

OptiPin is a private MK-677 (ibutamoren) tracker that turns a once-daily oral compound into a clean, reviewable record. Log each daily dose, get a reminder so a dose never slips, record side effects like appetite, water retention, lethargy and sleep, chart your weight over the dose timeline, and mark when you're on and off a cycle. Everything stays on your device; no account, no cloud upload.

By OptiPin·Updated June 2026

Status - research compound

Unapproved, development discontinued. MK-677 (ibutamoren) is an orally active growth-hormone secretagogue that was investigated in clinical trials but never approved by the FDA or EMA - its development program was discontinued. It is an unregulated research compound with no verified purity or dose accuracy, and it is banned in tested sport. OptiPin is a tracking tool and does not endorse or facilitate obtaining it.

Track your MK-677 on iPhone

Once-daily oral dose log, reminders, side-effect logging, weight-over-dose charts and cycle on/off tracking - private and on-device. Free to start.

Download on the App Store

Class

Oral GH secretagogue

Schedule

Once daily

Status

Research compound

Privacy

On-device

Why track MK-677 at all

MK-677 is an oral growth-hormone secretagogue - a ghrelin-receptor agonist taken once daily (often before bed) that raises GH and IGF-1. Its long-ish duration of effect keeps IGF-1 elevated for roughly a day, which is what supports once-daily oral dosing. Because it's a daily pill or oral liquid rather than a one-off, the thing that's easy to lose track of is simple consistency - did you take it, when, and what happened on the timeline. A tracker makes that visible, and lets you tie weight, appetite and side effects to which day and which dose you were on.

OptiPin treats it like any other once-daily entry: log the dose, get reminded, and see every dose against a timeline you can actually read.

What the OptiPin MK-677 tracker does

Daily oral dose log + reminders

Record the once-daily oral dose and get reminded on the due day so a dose never slips - no needles, no mixing, just the pill or oral liquid.

Side-effect logging

Note the effects that actually show up on MK-677 - appetite, water retention, lethargy and sleep - and see how they line up with each dose.

Weight & body-metric tracking

Log weight and measurements (or pull from Apple Health) and see them charted directly over your dose timeline.

Cycle on/off tracking

Mark when a cycle starts and ends so you can see how weight, appetite and other metrics move on and off the compound.

CSV import & export

Bring an existing dose history in from a spreadsheet, or export your log to share with a clinician.

Running MK-677 alongside other GH-axis compounds, or as part of a wider stack? OptiPin tracks it next to ipamorelin / CJC-1295 and tesamorelin on one timeline. For the human trial data, half-life and the IGF-1 picture behind the molecule, see the MK-677 reference.

Free tools for MK-677

References that pair with tracking - no app needed to use them:

Half-life visualizer - see how a once-daily oral dose accumulates and where IGF-1 elevation sits across the day.
MK-677 reference - the real human trial data, the half-life vs the 24-hour IGF-1 elevation, side effects and status, with sources.
All peptides - the full reference hub for GH-axis and other research compounds.

One app for everything you're on

The real advantage of OptiPin is that MK-677 doesn't live in isolation. If you're also on TRT, a peptide, or a supplement stack, all of it sits in one place with a single timeline and one set of insights - instead of fragmented across a notes file and your memory. That's the difference between logging a compound and actually seeing your protocol.

Not medical advice, not a dose, not a sourcing guide. MK-677 is an unapproved research compound whose development was discontinued, with documented effects on blood glucose and a heart-failure safety signal, and it's banned in tested sport. OptiPin records and reminds - it does not recommend a dose, a cycle, or whether to use MK-677, and does not endorse obtaining research-grade material. Discuss any GH-axis compound with a qualified clinician - especially if you have any glucose or cardiovascular history.

Start tracking today

Your MK-677, on a timeline you control

Daily doses, reminders, appetite and side effects, weight and cycle tracking - private, on-device, free to start.

Download on the App Store

FAQ

Is there an app to track MK-677?

Yes - OptiPin. You log each once-daily oral dose, get a reminder when the next dose is due, record side effects like appetite, water retention, lethargy and sleep, chart weight over your dose timeline, and track when you're on and off a cycle. It's on iPhone, stores data on-device and needs no account.

Is MK-677 approved?

No. It's an orally active growth-hormone secretagogue that reached clinical trials but was never approved by the FDA or EMA, and its development was discontinued. It's an unapproved research compound, not a legal supplement ingredient. See the MK-677 reference.

Does it track appetite and water retention?

Yes. Increased appetite and water retention are the two most commonly reported effects, so OptiPin lets you log them alongside lethargy, sleep and other symptoms, plotted over your dose timeline so you can see how they line up with your dosing.

Can it track weight over a cycle?

Yes. Log weight and measurements (or read weight from Apple Health) and OptiPin charts them over your dose timeline, and you can mark when a cycle starts and ends to see how things move on and off the compound.

Does it work offline and keep my data private?

Yes. Everything is stored on-device and works offline. There's no account and no required cloud sync, so your log isn't uploaded to a server.

Educational only, not medical advice. MK-677 is an unapproved research compound with a discontinued development program, demonstrated effects on blood glucose and a heart-failure safety signal, and it's banned in tested sport. OptiPin is a tracking tool and does not provide dosing or treatment advice, nor endorse obtaining research-grade material. Discuss any GH-axis compound with a qualified clinician.

MK-677 science · Ipamorelin / CJC-1295 tracker · Tesamorelin tracker · Half-life visualizer · All peptides