Contentbuilder is the Mac & iPhone app for making social content. Edit
photos and video, write the caption, and preview your post exactly
as it will look on six platforms — before it ever goes live.
Every format renders the way the platform will actually show it — the real
headers, action bars and colours — so captions never get clipped, faces
never land under the UI, and a 9:16 Story is framed right the first time.
Instagram
TikTok
Facebook
X
Snapchat
WhatsApp
Pixel-faithful chrome
Not a generic frame — each preview reproduces that app's own interface,
down to the exact brand colours, verified seals and reaction bars.
Instagram's blue hashtags, X's photo mosaic, Facebook's six reactions,
WhatsApp's forwarded-in-a-chat view — all there.
The buttons actually work
Tap like, save, follow or repost and the preview responds — the count ticks by one, exactly like the real thing.
Light and dark, automatically
Feed surfaces match the viewer's appearance; Stories and Reels stay white-on-media — just like the apps.
1,248 likes12.4K views842 comments
Numbers formatted per app
Realistic, stable sample counts — grouped like “1,248” on Instagram, abbreviated like “12.4K” on TikTok. Placeholders to judge layout, never fake analytics.
Tap into it, full screen
Blow the preview up to an immersive, black-backdrop view that feels like
you're inside the app — and flip between platforms and surfaces without
leaving it. Sound plays too, looping like a real Reel.
Before you post
Youseeit.Thenyoupostit.
Six networks, fifteen surfaces, and every one of them crops, cuts and reflows your post differently. Contentbuilder shows you each one on your own screen — before it is public.
Caption limit per platform · square-root scale, so the short ones stay readable
Snapchat250
X280
WhatsApp700
Instagram2,200
TikTok4,000
Facebook63,206
A 300-character caption — three short sentences — is already too long for
Snapchat and X. You find that out after you post.
Crop, colour, trim and caption without leaving the app — and without a
single frame leaving your Mac or iPhone. Every edit is non-destructive
until you tap Done.
Free1:14:59:161.91:1
Photo editor
Pan-and-zoom crop with the four social aspect ratios, 8 one-tap
filters, and fine Exposure / Contrast / Saturation / Warmth sliders.
Exports full-resolution, never the downscaled preview.
0:04.2 – 0:12.8 · 8.6s🔇 Muted
Video editor
Scrub a Photos-style filmstrip, drag the in/out handles, mute a clip, and
export. When it can, it trims losslessly with no re-encode —
fast, and no quality lost.
Wait for it…NEW DROPhow I shot this
Text & stickers
Drop non-destructive text over photo or video — 4 styles,
4 fonts and a curated colour palette, each overlay free to move, rotate,
and appear only when you want it to.
Launch
Introducing {title} 🚀 Live now on {platform}. {hashtags}
Use template →
Caption templates
Reusable captions with smart tokens like {title},
{platform} and {weekday} that fill
themselves in. Save your go-to hashtag groups once and drop them into any post.
On-device AI
Smart tools with no server behind them.
Captions, silence removal and hook-writing all run on your iPhone or Mac
with Apple's own frameworks. There is no cloud fallback to fall back to:
speech recognition is asked for on-device only, and if a device cannot do
it the feature reports unavailable rather than quietly uploading your
audio. Your video and audio stay where they are.
💬 Auto captions
this changed everything
Turn speech into word-timed subtitles in seconds, pick a style, tweak the
wording, then burn them in. Recognised entirely on-device — there's no
server fallback, by design.
✂️ Remove silences
Remove 5 pauses · save 0:141:20 → 1:06
Contentbuilder finds the dead air and stitches the good parts back together.
Drag one sensitivity slider and watch the cut count update live — before you
commit. All of it on your device.
✨ AI overlay text
Wait for it…
The one thing nobody tells you
Save this for later 📌
Stuck on a hook? Apple Intelligence writes punchy on-image text right on
your device. No Apple Intelligence? You still get instant, caption-aware
suggestions — the button never comes back empty.
Powered by Apple's Speech framework and Apple Intelligence — no cloud AI, no accounts, no uploads.
How it works
From what you shot to what you post.
Four steps, one app, and the last tap stays yours. Scroll — the phone keeps
up.
LibraryNext
123
3 selected
EditDone
OriginalVividWarmCoolMono
CaptionsBurn in
this changedeverythingOn device
PreviewInstagram
yourname
yourname golden hour on the roof —
IGTTFBXSCWA
Bring it in
Start with what you shot.
Import photos and clips from your library — up to ten at a time — or drop them straight onto the Mac window. Everything lands in one post you keep working on.
Make it
Crop, colour, trim, letter.
Crop to any social aspect, pick from seven filter looks, and nudge exposure, contrast, saturation and warmth. Trim the video, mute it, and place text that is burned into the export rather than faked in a preview.
Say it
Captions, from the audio itself.
Word-timed subtitles recognised on your device, in a style you pick, editable before you burn them in. There is no cloud path — a device that cannot do it says so, rather than uploading your audio.
See it
Every surface, before it is public.
Flip the same post through fifteen surfaces across six networks in their own chrome. A readiness check flags a caption over the limit or a crop that will cut your subject — while you can still change it.
Plan it, sync it
Your whole calendar of content — on every device.
Line up what's going out and when, then pick up on the other device
exactly where you left off. Nothing goes out on its own; you stay in control.
Today
Golden hour rooftop6:30 PM🔔
Studio BTS8:00 PM🔔
Tomorrow
Weekly recap9:15 AM🔔
A planner, grouped by day
See everything you've scheduled, grouped by day, each with the platforms
it's headed to. Set a reminder — at post time, 15 minutes or an hour
before — so the right moment never slips. It's a local notification on
your device, not a bot posting for you.
iCloud
Mac and iPhone, one library
Start a post on your Mac, finish it on your phone. Your posts, media,
templates and hashtag groups sync through your own private iCloud —
no separate account, and if you're signed out it simply works
locally on that device.
Private by design
Your content stays your content.
Every edit, every caption, every frame of video is processed on your Mac or
iPhone. Captions are transcribed on-device with no server fallback. Sync runs
through your own private iCloud. There's no Contentbuilder account, no upload,
and nothing to opt out of.
🔒 Nothing is sent to us — there's no “us” server to send it to
📶 Works fully offline — every edit and AI feature runs with no connection
☁️ Synced privately through your Apple ID, or kept local
Where it fits
What it does — and what it deliberately doesn’t.
No brand names, because a table cannot stay honest about someone else’s
product. Two rows below go the other way; those are the ones to read first.
How Contentbuilder compares with a network’s own app, a scheduling
service, and a desktop editor.
Capability
Contentbuilder
The network's own app
A scheduling service
A desktop editor
See the post in every platform’s own chrome before it is public A network app previews its own surfaces only; a scheduler shows a generic card.
Yes
Partly
Partly
No
Photo and video editing in the same place you write the caption
Yes
Partly
No
Partly
Captions from speech without uploading the clip
Yes
No
No
Partly
Works without creating an account anywhere
Yes
No
No
Yes
Your media stays on your own devices
Yes
No
No
Yes
Publishes automatically at a chosen time, without you We schedule a reminder, not a post — the app holds no login to publish with.
No
Partly
Yes
No
Free for the network you use most
Yes
Yes
Partly
Partly
Free and Pro
Start on Instagram. Add the rest when you need it.
Everything that makes a post — the editors, the overlays, the sound, the
preview, the sync — works on the free tier. Pro is about breadth and the
two tools that save the most time.
Free
The whole studio, on one platform.
Free, with no account
Instagram, all four surfaces — Feed, Story, Reel and Grid (4 of 15)
The full photo editor: crop to every social aspect, seven filter looks plus the original, and four fine adjustments
The full video editor: trim, mute and export
Text overlays, burned into the exported file
Sound from six sources, including your own library
Starter caption templates and the hand-off publish flow
Private iCloud sync of your whole workspace across Mac and iPhone
What it does not do
Video exports carry a small "Made with Contentbuilder" badge
2 scheduled posts at a time, and 2 saved hashtag groups
The starter templates are yours; making your own is Pro
Because there is not one yet. Contentbuilder has no App Store listing, so no price tier has been set. Publishing a figure now would mean publishing a guess, and the number Apple charges at checkout is the only one that counts.
Does buying on iPhone unlock the Mac?
On iPhone the subscription runs through Apple. The Mac app can also be pointed at a separate subscription endpoint you configure yourself — that is a different channel, not the same receipt. Until both are live on one channel, treat them as separate.
No asterisks
What it does — and what it doesn't.
Straight talk beats a feature list that overpromises. Here's exactly where the line is.
✓ What Contentbuilder does
Previews your post inside each app’s real look — before you publish
Edits photos and video on-device: crop, 7 filters, adjust, trim, mute, text
Writes captions from templates, and burns subtitles into video from speech — on-device
Checks every post against each platform’s caption and hashtag limits
Syncs your whole workspace privately across Mac and iPhone via iCloud
— What it doesn't pretend to
Auto-post to the networks It hands off instead — copies your caption, saves the media, and opens the app. The platforms have no public posting API for personal accounts.
Publish on a schedule by itself “Scheduling” is a friendly reminder on your device. Your post never goes out without you.
Invent hashtags with AI You save your own reusable hashtag groups and drop them in — no guessing, no fluff.
Upload anything to our servers There are no Contentbuilder servers, no cloud AI, and no analytics. The AI is Apple’s, running on your device; sync is your own private iCloud.
7photo filtersplus the original, crop, exposure, contrast, saturation and warmth
3caption stylesBold, Clean and Pop — burned in on your device
0bytes uploadedno server, no account, no telemetry
“I built Contentbuilder because I was tired of the publish-and-pray. I
wanted to see the post — really see it, the way each app shows it — do the
editing in one place, and keep everything on my own devices. It’s a small,
honest app made by one person who cares about the craft. No dark patterns,
no data grab. Just a good tool for making things you’re proud to post.”
Jarrel — maker of Contentbuilder
One person, no company
No analytics SDK in either app
No social login, ever
Not in the App Store yet
FAQ
Questions, answered.
Including the ones with an awkward answer — those are the ones worth
knowing before you install.
When does Contentbuilder launch?
It is not in the App Store yet, and there is no listing to pre-order from. Join the early-access list and you will get one email the day it is there.
Does Contentbuilder post for me?
No, and that is a design decision rather than a missing feature. Contentbuilder copies your caption to the clipboard, saves your media to Photos, runs a set of pre-flight checks, and opens the platform’s own app. You paste and post. It never holds a login for any network, so there is no account of yours it could post from.
Do I have to connect my Instagram or TikTok account?
No. There is no login for any social network anywhere in the app, and no access token for one is ever requested or stored. The only optional sign-in is Spotify, and that exists purely so you can search for a sound.
Which platforms are free?
Instagram, with all four of its surfaces — Feed, Story, Reel and Grid. TikTok, Facebook, X, Snapchat and WhatsApp need Pro. Every editing tool, the sound picker, the overlays, the planner and iCloud sync work on the free tier.
What does the free tier not do?
Three things, and they are worth knowing before you install rather than after. Video exports carry a small "Made with Contentbuilder" badge. You can have two posts scheduled at a time and two saved hashtag groups. And the starter caption templates are yours, but writing your own is Pro.
Do the AI features need an internet connection?
No. Captions are recognised on your device with on-device recognition explicitly required — if a device cannot do it, the feature reports unavailable rather than uploading your audio, because there is no server for it to upload to. Silence removal is signal processing on the file itself. AI overlay text uses Apple Intelligence, and falls back to offline suggestions when the model is unavailable.
Is my media uploaded anywhere?
No. Your projects live on your device and, if you turn on iCloud sync, in your own private iCloud database — which is your Apple account, not ours. We run no server that holds your work, so there is nothing on our side to leak or to subpoena.
How exact are the previews?
They are careful recreations, not screenshots of the real apps, so treat them as a check on framing, crop, caption length and safe areas rather than a pixel guarantee. Two limits worth naming: a video preview shows a still frame rather than playing, and the networks change their own layouts without telling anyone.
Can it schedule a post and publish it automatically?
It schedules a reminder, not a post. At the time you picked, your device notifies you and you run the hand-off. Nothing publishes while you are away, because nothing can: the app has no connection to any network to publish through.
Are the hashtags generated for me?
No. You write and group your own hashtags, and the app remembers the groups and tells you each platform’s ceiling — thirty on Instagram, ten on TikTok, three on X and Snapchat, five on Facebook, and none at all on WhatsApp. Suggesting tags is not something an on-device model does well, so it does not pretend to.
Does buying it on iPhone unlock the Mac?
Not yet, and it would be easy to imply otherwise. On iPhone the subscription runs through Apple. The Mac app reads its subscription from an endpoint configured in Settings — a separate channel with a separate receipt. Until both sit on one channel, treat them as two.
What happens to my work if I stop paying?
Your posts, media, templates and hashtag groups stay on your device and in your iCloud account; nothing is deleted or held hostage. The Pro-only surfaces and tools stop being available, and video export goes back to carrying the badge.
Make your next post your best post.
Contentbuilder is on the way. Join the early-access list and you will get one
email the day it is there.
Publishing is a hand-off in three steps: the caption is copied to your
clipboard, the media is saved to your photo library, and the platform's own
app opens so you can paste and post it yourself.
Caption copiedTrimmed to the platform’s limit, hashtags in place
Media savedOverlays burned in, exported at the right aspect
Their app opensYou paste and post — under your own account
Pressing the button adds your address to the early-access list: one email
when Contentbuilder launches, and the occasional build update. No ads, and
nothing is shared with anyone. See
how the address is handled, or
leave the list at any time — every email carries a
one-click link too.
You’re on the list for early access
Confirm your email to lock in your spot — check your inbox (and spam) for the link.
Refer friends to move up the list — every confirmed signup lifts your spot.