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Paul Ponna and Sid Diwar are the team behind a family of AI apps for creators and marketers, from DoodleMaker and HumanPal to Artistly and VideoExpress. Their support documentation lists the apps under Strontium Corp, and newer apps are listed under the HumanPal brand on software review sites.
This guide explains what each app does, who it suits and what to check before you buy. It’s based on the vendors’ own product information and independent user reviews on Capterra. It isn’t a hands-on test of every app, so always watch the demo on the sales page before you buy.
Quick comparison
| App | What it does | Best for |
|---|---|---|
| HumanPal | AI presenter videos with realistic human avatars | Explainer and sales videos without filming |
| VideoExpress AI | Text-to-video and image-to-video clips | Short social clips and B-roll |
| TalkingPhotos AI | Turns still photos into talking videos | Fun social content, characters, lessons |
| AvatarBuilder | Videos with customisable 3D cartoon avatars | Branded mascot-style videos |
| AI Video Builder | AI-assisted video creation | Quick marketing videos |
| VideoCreator | Template-based video maker | Promos, logo reveals, ads |
| DoodleMaker | Whiteboard and doodle explainer videos | Training and explainer videos |
| SketchGenius | Turns photos into sketch-animation videos | Eye-catching sketch reveals |
| SketchPersonalizer | Personalised videos and client outreach | Freelancers selling video services |
| Artistly | AI image and design generator | Social graphics, mockups, logos |
| HumanTalk | AI voiceovers and AI writing tools | Voiceovers for videos and podcasts |
| HumanBot | AI chat and voice agents trained on your content | Website support and lead capture |
| ChatterPal | Website chat with talking 3D avatars | Adding an interactive chat to a site |
AI video and avatar apps
HumanPal
HumanPal creates videos presented by realistic AI humans. You type a script, or upload your own voice, and an avatar presents it with lip-sync. It can also create presenter videos from photos.
Key features:
- Realistic human avatars and video templates
- Text-to-video in many languages
- Upload your own voice for lip-synced narration
- Branding, editing tools and a media library
Best for: Course creators, coaches and marketers who want talking-head videos without being on camera.
Good to know: On Capterra, HumanPal is rated 4.7/5 from about 3,500 reviews. Reviewers like how easy it is, but the most common complaints are slow or unpredictable rendering and some limits on customisation.
See HumanPal on the official site →
VideoExpress AI
VideoExpress AI turns text prompts and still images into short, high-definition video clips, with a built-in timeline editor to put scenes together.
Key features:
- Text-to-video and image-to-video
- Motion effects and inpainting to edit clips
- Multi-character lip-sync
- Built-in timeline editor
Best for: Creators making short social videos, ads and B-roll.
Good to know: Rated 4.7/5 on Capterra from around 8,000 reviews. Users praise the value and ease of use. Common complaints are limited control over small details (you often have to regenerate a whole clip) and slower performance on longer projects.
See VideoExpress AI on the official site →
TalkingPhotos AI
TalkingPhotos AI animates a still photo so the person (or character) appears to speak, with facial expressions and movement.
Key features:
- Turns photos into talking videos
- Text-to-speech and lip-sync
- Consistent characters and a storyboard tool for longer videos
- Works alongside Artistly and VideoExpress
Best for: Social media content, storytelling, teaching and fun personalised clips.
Good to know: Rated 4.8/5 on Capterra from about 2,300 reviews. Lip-sync is strong with clear audio, but facial movement can look unnatural with low-quality photos, and you may need a few attempts.
See TalkingPhotos AI on the official site →
AvatarBuilder
AvatarBuilder makes videos with customisable 3D cartoon avatars. It is a different product from HumanPal, which uses realistic humans.
Key features:
- Custom 3D avatars with hairstyles, props, colours and your logo
- Turns text or audio into animated avatar videos
- Drag-and-drop mockup video creator
- Logo mapping for branded avatars
Best for: Brands, local businesses and channels that want a recognisable animated character.
Good to know: Choose AvatarBuilder if you want a friendly cartoon style or a brand mascot, and HumanPal if you want realistic presenters.
See AvatarBuilder on the official site →
AI Video Builder
AI Video Builder is one of the newer apps in the range, built to help you create marketing videos quickly with AI.
Key features:
- AI-assisted video creation
- Designed for marketing and social videos
- Sits alongside the other apps in the range
Best for: People who already like the range and want a quick way to produce marketing videos.
Good to know: There is little independent information about this app yet, so watch the full demo and check exactly what is included before you buy.
See AI Video Builder on the official site →
VideoCreator
VideoCreator is a browser-based, template-driven video maker for people with little or no editing experience.
Key features:
- Large template library: explainers, promos, logo reveals, whiteboard and live-action
- Drag-and-drop editor
- Motion tracking to attach logos or effects to moving objects
- Royalty-free music, images and icons
Best for: Small businesses and marketers who need professional-looking promos fast.
Good to know: Template apps are quick but give less creative control than full editors. Some templates and features are sold as upgrades.
See VideoCreator on the official site →
Doodle and sketch video apps
DoodleMaker
DoodleMaker creates whiteboard, doodle and sketch-style explainer videos, with support for more than 30 languages.
Key features:
- Whiteboard, blackboard and glassboard styles
- Templates and a built-in asset library
- Text-to-speech and subtitles
- HD export
Best for: Explainer videos for training, courses and product walkthroughs.
Good to know: Rated 4.5/5 on Capterra (a smaller number of reviews, many of them vendor-referred). Reviewers like the templates and ease of use. Some mention projects failing to render, slow support and horizontal-only video formats.
See DoodleMaker on the official site →
SketchGenius
SketchGenius turns photos into animated sketch videos, where the image appears to be drawn in front of the viewer.
Key features:
- Sketch styles such as crayon, notebook, chalkboard, blueprint and colour
- Sketch videos up to 10 minutes long
- Text-to-speech, captions and translation
- Background remover and drawing-hand animations
Best for: Attention-grabbing intros, logo reveals and social posts.
Good to know: Rendering can be slow at busy times, and some advanced styles need an upgrade.
See SketchGenius on the official site →
SketchPersonalizer
SketchPersonalizer is a companion app for personalising videos and winning clients. It works alongside SketchGenius or any other video app.
Key features:
- Personalised video creation
- Client-finding app
- Video email sending
- AI voices
Best for: Freelancers and agencies offering video services to local businesses.
Good to know: This is a business tool rather than a video editor, so it makes most sense if you already create videos and want to sell them as a service.
See SketchPersonalizer on the official site →
Design, voice and chat apps
Artistly
Artistly is an AI image and design tool. You describe what you want and it creates images, illustrations, logos and mockups, with editing tools built in.
Key features:
- AI image generation from text prompts
- Consistent characters across a series of images
- Product mockups for t-shirts, mugs and more
- Background removal, upscaling and a layer-based editor
Best for: Bloggers, print-on-demand sellers and small brands that need graphics regularly.
Good to know: Independent reviewers highlight the one-time payment and range of tools, but note that some features, such as the AI inpainter, don’t always give good results.
See Artistly on the official site →
HumanTalk
HumanTalk combines AI voiceovers with AI writing tools, so you can write a script and turn it into a natural-sounding voiceover in one place.
Key features:
- AI voices, including emotional voice styles
- AI content writer, rewriter and summariser
- Prompt creator
- Merge several voiceovers into one track
Best for: YouTubers, course creators and podcasters who need voiceovers.
Good to know: Rated 4.8/5 on Capterra from about 1,500 reviews. One reviewer noted there aren’t many British voices, which matters if you want a UK accent.
See HumanTalk on the official site →
HumanBot
HumanBot lets you build AI chat and voice agents trained on your own website, PDFs and documents, to answer questions, capture leads and book appointments.
Key features:
- Train agents on your URLs, PDFs and files
- Custom chat flows and keyword triggers
- Hand over to a live person when needed
- Zapier integration
Best for: Small businesses that want 24/7 answers on their website.
Good to know: Rated 4.8/5 on Capterra from about 800 reviews. Users mention limited avatar options and voices that can sound robotic at times.
See HumanBot on the official site →
ChatterPal
ChatterPal adds an automated or live chat to your website, presented by a talking 3D avatar.
Key features:
- Automated AI chat plus live chat with multiple agents
- Talking 3D avatars with text-to-speech in around 25 languages
- Ready-made chat flows for bookings, orders and sign-ups
- Analytics on conversations and conversions
Best for: Adding an engaging chat to a website or a client’s website.
Good to know: ChatterPal is one of the older apps in the range. If you want a chatbot trained on your own content, compare it with HumanBot first.
See ChatterPal on the official site →
Things to know before you buy
- Launch pricing and upsells: these apps are usually sold as a one-time payment at launch, followed by optional upgrades (often called OTOs). You don’t need the upgrades to use the main app, so decide what you need before checkout.
- Prices change: launch prices are often time-limited, so check the current price and what’s included on the sales page.
- Refund policy: check the refund window on the sales page before you buy.
- AI quality varies: results depend on your script, photos and settings, and some clips need regenerating.
- Reviews: some software reviews are vendor-referred or incentivised, so read a mix of positive and critical comments.
Which app should you start with?
- You want presenter videos without filming: HumanPal.
- You want short AI clips for social media: VideoExpress AI or TalkingPhotos AI.
- You make explainers or training videos: DoodleMaker or SketchGenius.
- You need graphics and mockups: Artistly.
- You need voiceovers: HumanTalk.
- You want a website assistant: HumanBot.
Frequently asked questions
Are these apps a one-time payment?
Most have been sold with a one-time payment at launch, but pricing can change and upgrades cost extra. Check the sales page for the current offer.
Do I need technical skills?
No. The apps are designed for beginners and run in your web browser, though each has a short learning curve.
Can I use the videos and images commercially?
Many of the apps offer a commercial licence, sometimes as an upgrade. Check the licence terms on the sales page before using content for clients.
Will these apps make me money?
They are tools, not income schemes. Any results depend on how you use them, your audience and your effort.
