After COVID, I Couldn't Remember My Own Photos. Annotating Them Brought Everything Back.

I caught COVID in early 2023. The fever lasted four days. The fatigue lasted weeks. The brain fog — that lasted much, much longer.

I'd scroll through my own photo library and feel nothing. A picture from 2019 at a beach with my wife: I knew intellectually that it was us, that we went there, that it was a good day. But I couldn't feel the memory. It was like reading someone else's diary.

"That's your daughter's third birthday party. You were there for six hours." — My wife, pointing at a photo that might as well have been printed from the internet.

This isn't a medical story. It's a story about accidentally discovering that the act of labeling and describing your photos — what apps call "annotation" — is one of the most effective memory-recovery rituals I've ever found. And I don't think it's just for people with brain fog.

The Fog, Honestly

There's a lot of talk about "long COVID brain fog" in medical journals. Some studies say it affects 10–30% of people who had even mild infections. But the numbers don't capture what it actually feels like.

It feels like this: you're looking at a photograph of a restaurant interior. You can see the lighting, the tablecloth, the people at the table. You should remember being there — the photo was taken on your phone. But the memory doesn't come. There's a blank spot where the sensory details should be. No recall of the food. No recall of the conversation. No emotional texture.

For months, I treated this as a purely medical thing. Sleep more. Take supplements. Wait. And while some of that helped, what actually moved the needle wasn't medical at all. It was behavioral.

Accidental Discovery: The Annotation Routine

I had started using That Day for a completely different reason: I wanted a morning email that would remind me of forgotten moments. The app scans your photo library and groups images by calendar date — so every July 7th, you see every July 7th photo across all years.

But there's a feature I almost skipped: annotation. Before the app generates your daily story, you can label each photo with:

• Who is in it
• Where it was taken
• What was happening

Who, Where, What. Three fields. That's it.

I started annotating a few photos a day — not as therapy, just as a chore to get the app working right. Four minutes per day. Fill in the blanks. Move on.

Then something shifted.

What Three Words Do to a Memory

There's a photo of me at a dockside café in 2016. Before annotation, I couldn't place it. Was that a work trip? A holiday? The background was generic — water, boats, a blue umbrella.

Then I typed:

Who: with my brother
Where: Fisherman's Wharf, San Francisco
What: last day before he emigrated

At the moment I typed "last day before he emigrated," the entire day unlocked. Not instantly — it was more like a door creaking open. I remembered the clam chowder. I remembered that he bought a Giants cap even though he doesn't follow baseball. I remembered the awkward hug at the airport six hours later.

The photographic memory was still corrupted. But the annotated memory — the one I reconstructed deliberately, word by word — was real. And it stayed.

Why Annotation Works (Even Without Brain Fog)

Cognitive science calls this elaborative encoding: the more actively you process a memory, the more deeply it embeds. Passively scrolling through photos is shallow processing. Writing down who was there, where you were, and what happened is deep processing.

In normal brains, this deepens existing memories. In a brain recovering from cognitive fog, it can reconstruct memories that felt lost.

The key dynamic isn't the technology — it's the one-photo-at-a-time, deliberate pace. You're not "batch processing" a folder. You're spending four minutes with a single day of your past.

And here's the part that surprised me most: it stopped feeling like therapy and started feeling like fun. There's genuine joy in the act of remembering — not the passive kind where a notification reminds you of a photo, but the active kind where you wrestle a foggy detail into clarity and win.

What 30 Days of Annotating Looked Like

I started keeping rough notes. Here's what the first month gave me:

Week 4 was the turning point. The email arrived at 8 AM with a January 14th story from three different years. I could remember all three. Not perfectly — there are still gaps — but I recognized my own life again.

Annotation Isn't Just Metadata — It's a Memory Workout

Most photo tools treat annotation as an organizational chore — tags, metadata, machine-readable labels. That Day treats it differently: annotation is part of the product experience. The labels you write become the raw material for the AI-driven daily story. They're not buried in a database; they're read back to you every morning.

This creates a feedback loop:

1. You annotate photos (active recall exercise)
2. The app generates a story from your annotations (validation)
3. You receive the story in your inbox (reinforcement)
4. The next day, you annotate again (the loop repeats)

It's not magic. It's spaced repetition disguised as a morning routine. And for someone whose memory needed exactly that kind of structured reinforcement, it was — without exaggeration — transformative.

Who This Is For (It's Not Just Post-COVID Recovery)

I wrote this because I searched for "brain fog photo memory recovery" and found almost nothing useful. The search results were all medical advice. Nobody was writing about the behavioral side of memory reconstruction.

But I think this applies more broadly:

• Anyone feeling disconnected from their own past — whether from illness, aging, stress, or just the blur of years going by too fast
• Parents whose kids have grown — annotation forces you to slow down and attend to each milestone photo
• People with 10,000+ photos and zero stories — metadata doesn't matter if you never stop to describe what a photo means

The annotation feature in That Day wasn't designed as a cognitive therapy tool. It was designed because good stories need good input. But the side effect — deliberate, daily memory reconstruction — turned out to be the feature I needed most.

Try One Day. Just One.

I'm not going to tell you to "start annotating 500 photos." That's overwhelming and nobody does it. Start with one day. Pick a date where you have a few photos. Open That Day, label the Who / Where / What for each image. Let the app write a story. Read it tomorrow morning.

If your memory has been foggy — from COVID, from stress, from the simple passage of time — you might find that the ritual of putting words to photos does more for you than any passive scrolling ever could.

Because here's the thing about memories: sometimes they don't come back on their own. Sometimes you have to reach into the fog and pull them out yourself. And it turns out that typing three short labels — a name, a place, a moment — is a pretty good way to start reaching.

That Day is a Windows desktop app. It scans your photo library, lets you annotate photos by day, and delivers a personal AI-written story every morning. No cloud uploads required. 7-day free trial, no credit card needed.