CoverHook vs Thumby
CoverHook
coverhook.comThumby
thumby.appSide by side
| Figure | CoverHook | Thumby |
|---|---|---|
| Price from | $8.25/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | — |
| Plans published | 6 | 4 |
| Spec score · AI Thumbnail Generators | 9.1 (#1) | 7.6 (#21) |
| Data handling | CoverHook says prompts and reference images are sent to apimodels.app for AI generation, and account data and files are stored in Cradler. | The privacy policy says uploaded reference images are stored privately, personal data can be scrubbed within 30 days after account deletion, and payment records are retained for seven years. |
| Formats | The site lists YouTube thumbnails, album covers, book covers, TikTok/Reels covers, text covers, and YouTube banners. | Thumby supports standard 16:9 thumbnails, YouTube Shorts at 9:16, and says one brief can also produce Instagram and Pinterest formats. |
| Privacy | CoverHook says it runs no advertising, analytics, or third-party tracking scripts, and does not sell user data or train models on user content. | Thumby says it does not sell user data and lists Anthropic and Google as AI providers that receive prompts through their APIs. |
| Support | The Studio plan includes priority support; privacy and data requests are handled by email, with a stated target response time of 30 days. | Thumby says it reads every contact message and replies within a day. |
| What it does | CoverHook generates finished cover images with artwork and typography composed together for a selected format. | Thumby turns a one-sentence video idea into three to five designed YouTube thumbnail options in about 60 seconds. |
Plans
CoverHook
- FreeFree
- 2,000-credit pack$29.90, paid once
- 4,000-credit pack$59.90, paid once
- Pro$99 a year
- 10,000-credit pack$99.90, paid once
- Studio$199 a year
In their own words
CoverHook
CoverHook generates cover images with AI, arranging artwork and typography for the format you select. Its listed formats include YouTube thumbnails and banners, album and book covers, TikTok and Reels covers, and text covers. For a YouTube thumbnail, enter a title, optionally add a reference image, choose a look, and generate three strategy variants. Each thumbnail receives a 0–100 fit score and rule-by-rule checks for qualities such as subject recognition, contrast, and caption legibility. YouTube exports are 16:9 at 2048×1152 in 2K or 1280×720 in 1K. Text covers instead render on a local browser canvas, use no AI call or credits, and can be exported repeatedly. The free plan is free and includes 25 signup credits, all six cover types, unlimited text-cover exports, and cloud-saved generations. Pro is $99 a year; Studio is $199 a year. The API shares the account credit balance, processes jobs asynchronously, and permits up to three generations in flight per account.
Thumby
Thumby turns a plain-language video idea into three to five designed thumbnail options in about 60 seconds. The workflow handles prompting and design decisions, and a YouTube channel URL can guide it toward that channel’s visual style. It offers 18 niche styles and lets users save a style for later use. Output formats include standard 16:9 thumbnails, 9:16 YouTube Shorts, and, from one brief, Instagram and Pinterest formats. A 1K generation uses one credit; 2K and 4K upscaling use three and six credits, respectively. The Free plan costs nothing and includes three signup credits, with no card required and no credit expiration. One-time packs cost $15 as a one-time purchase for Starter, $49, paid once for Creator, and $99, paid once for Pro. Thumby says account holders own rights to generated thumbnails, including for monetized channels. It runs on Android, iOS, and web.