I've seen ONDA vs InMode come up so many times lately that I finally sat down and tried to understand the difference myself.

I added the two diagrams I found while researching because they made it much easier to understand what's actually happening under the skin.

And the first thing I realized was...

I think we've been asking the question slightly wrong haha


// INMODE ISN'T JUST ONE THING

People in Korea say:

"I got InMode."

But which one?

FX?

Forma?

Both?

That matters.

Very simplified, this is how I'm thinking about them now:

ONDA

→ 2.45 GHz microwave energy

→ no suction

→ localized fat + tightening

InMode FX

→ RF + suction/vacuum

→ fat + contouring

Forma

→ RF

→ more focused on skin tightening

So now when someone asks:

"ONDA or InMode?"

my first question is:

Which InMode?

// WHAT THE TWO PICTURES HELPED ME UNDERSTAND

Look at the first image.

ONDA delivers microwave energy into the tissue without pulling the tissue into a vacuum applicator.

There are also different handpieces for different depths.

Deep is mainly used when localized fat is the target.

Shallow is used more for things like skin tightening, cellulite and the submental area.

Then look at the second image.

Completely different idea.

The tissue is pulled into the applicator with suction, RF heats it, and then energy is delivered to the tissue.

That particular diagram is for BodyFX, so I'm not saying every InMode treatment works exactly like that.

But it helped me understand why people describe the FX experience so differently from ONDA.

So this isn't simply:

new machine vs old machine.

They're delivering energy differently.

That was my first lightbulb moment.

// OKAY, WHICH WOULD I CHOOSE?

If I had a SMALL DOUBLE CHIN

and price mattered

→ I'd check InMode FX first.

If I wanted FAT + TIGHTENING

in a relatively small area

→ I'd compare FX + Forma with ONDA.

If I were treating ARMS / ABDOMEN / a larger body area

→ I'd ask about ONDA first.

If I really hated suction or pinching

→ I'd lean ONDA.

If I mostly had LOOSE SKIN

and not much fat

→ I would stop choosing based on the machine name.

I'd ask what exactly they're trying to treat first.

Because removing fat isn't automatically the answer to a loose jawline.

// WHAT ABOUT PAIN?

This is one reason ONDA caught my attention.

Some people here who've actually had ONDA recently described it more like:

cold → warm → tingling

rather than the suction feeling people associate with FX.

Personally, that sounds better to me haha

But...

more comfortable ≠ more effective

I wouldn't choose ONDA just because it sounds easier.

Comfort and results are two different questions.

// PRICE IS WHERE INMODE GETS VERY TEMPTING

Especially in Korea.

You can find some seriously cheap InMode promotions for small facial areas.

ONDA is often a much bigger spend.

At first I thought:

"Then why wouldn't I just do InMode?"

Then I realized I was comparing things like...

cheap double-chin FX

vs

higher-energy ONDA for arms/body.

That's not really a fair comparison.

And one more thing I've learned from reading actual treatment reviews:

cheap session ≠ cheap treatment plan

If one treatment is cheap but you're recommended 2 or 3 sessions, compare the whole plan.

This matters even more if you're flying to Korea and can't casually come back three times.

// MY CHEAT SHEET

small double chin + budget

→ InMode FX

small area + fat + tightening

→ FX + Forma OR compare ONDA

arms / abdomen / larger fat area

→ ONDA first

hate suction

→ ONDA

mostly loose skin + little fat

→ don't choose by machine name

want liposuction-level change after one session

→ neither

// MY CONCLUSION

There isn't really an:

"ONDA is better than InMode"

answer.

For me:

FACE + SMALL AREA + BUDGET

→ I'd start by checking InMode FX.

BODY CONTOURING / LARGER AREA

→ I'd ask about ONDA first.

And if someone tells me:

"This machine is better."

My question now is:

Better for WHAT?

The main difference between ONDA and InMode is that ONDA uses 2.45 GHz microwave energy without vacuum, while InMode FX uses radiofrequency with suction/vacuum for fat contouring.

At least this is how I'm choosing now:

Problem first. Machine second.