Supaslides vs ContentIn
Head-to-head
Supaslides auto-builds your brand theme from your URL and lets Claude write and lay out every slide, best for founders and creators who want on-brand Instagram and TikTok carousels in minutes. ContentIn ContentIn is a LinkedIn-only content system: it learns your writing style from past posts, drafts new ones, manages ideas, schedules through the official API and reports analytics. Carousels and AI images are a secondary media feature on the Growth plan and up, capped per month. Pick ContentIn if consultants and b2b founders who post text on linkedin several times a week and want an ai ghostwriter that sounds like them, with the occasional carousel.
At a glance
| Supaslides | ContentIn | |
|---|---|---|
| Brand setup | Auto-extracted from your URL (colours, fonts, logo, voice) | Voice model from your posts + manual kit |
| AI copywriting | Claude writes every slide from a one-line brief | AI ghostwriter in your voice (Growth+, capped) |
| Design & layouts | 7 art directions + per-slide layout chosen by AI | Template carousel & image maker (4/mo on Growth) |
| Platforms | Instagram, TikTok, LinkedIn, Facebook, X, Pinterest, YouTube | LinkedIn only |
| Export | High-res PNG, LinkedIn PDF, or animated video (WYSIWYG) | PDF carousel / image, or publish |
| Scheduling | Not yet (export & post) | Yes, unlimited via LinkedIn API |
| Free plan | 1 brand, 3 carousels/mo (watermarked) | 7-day trial (card required) |
| Starting paid price | $19/mo Pro ($16/mo annual) | $19/mo Essentials (AI + carousels from $39) |
Where they differ
Brand setup: a theme from your URL vs a template you style
With ContentIn you pick a template and apply your brand kit, voice model from your posts + manual kit. With Supaslides you paste your website URL and we read it, pulling your colours, fonts, logo and tone of voice into a ready-made theme. You skip the styling step entirely.
Copywriting: who writes the words
Supaslides hands the whole deck to Claude, which writes each slide and chooses the right layout for it, cover, statement, big-stat, list, step, tip or CTA, so the carousel reads as one narrative. ContentIn generates copy too (ai ghostwriter in your voice (growth+, capped)), then leaves layout to you and the template.
Design & flexibility
ContentIn gives you template carousel & image maker (4/mo on growth). Supaslides ships seven complete art directions and one click re-skins the entire carousel: same words, a completely different look.
Who each is best for
Choose Supaslides if you…
- Paste a URL and we auto-build an on-brand theme (colours, fonts, logo and tone of voice) instead of starting from a generic template.
- Export animated video, not just static images. Each slide's text and elements actually animate, set by the art direction, and download as per-slide video clips or one combined video. Most carousel makers only output static images.
- Claude writes the copy and picks the right layout per slide (cover, stat, list, tip, CTA) so the whole deck reads as one narrative.
- Seven art directions re-skin the entire carousel in one click, same words, a completely different look.
Choose ContentIn if you…
- Style training on your own posts; users report editing under 10% of drafts after a few weeks.
- Unlimited scheduling on every tier via LinkedIn's official API, plus idea manager, 1,000+ post templates and analytics.
- AI carousel and image generation from a topic, URL or blog post, with brand kits and PDF export, inside the same workflow.
- 4.7/5 from 82 Capterra reviews, a 30-day money-back guarantee and a Telegram bot for posting from your phone (Pro).
Why people switch from ContentIn
- Need Instagram and TikTok carousels too, not a LinkedIn-only text tool.
- Do not want to pay for the Growth tier and still be capped at four carousels a month.
- Want a full design system pulled from their URL and animated exports, not a template with a brand kit.
To be fair, ContentIn keeps the edge if consultants and b2b founders who post text on linkedin several times a week and want an ai ghostwriter that sounds like them, with the occasional carousel. If that’s you, it’s a solid tool. If you just want a beautiful, on-brand carousel without the setup, that’s exactly what Supaslides is built for.
FAQ
Is Supaslides a good ContentIn alternative?
Yes, if your priority is fast, on-brand carousels for Instagram and TikTok, Supaslides builds your theme automatically from your URL and lets Claude write every slide. ContentIn is a stronger fit if you specifically need built-in scheduling and extra platforms.
How is Supaslides different from ContentIn?
The core difference is brand setup. ContentIn starts you from a template you style yourself, while Supaslides reads your website and auto-builds a theme, colours, fonts, logo and tone of voice, then applies one of seven art directions across the whole deck.
Does Supaslides cost less than ContentIn?
Supaslides Pro is $19/mo ($16/mo on annual) with no watermark, 20 carousels/month and 3 brands. ContentIn's entry paid plan is Essentials $19/mo ($15/mo annual): scheduling and analytics, no AI. Growth $39/mo ($31/mo annual) adds AI drafts, 20 AI images and 4 AI carousels a month. Both offer a free way to try first.
Try Supaslides, the simpler ContentIn alternative
Paste your URL, write one line, and let Supaslides build an on-brand deck for Instagram, TikTok, LinkedIn and every major feed. Free to start, no credit card.