Verithiathe honest score on any app
Updated July 2026 · real, multi-region App Store reviews
Head-to-head

AI Video Generator vs Grok AI

AI Video Generator 4.8★ · Free + IAP 75
Winner AI Video Generator
Grok AI 4.9★ · Free to download 50

AI Video Generator is the better choice for users specifically needing advanced AI avatar and video generation, despite its pricing model issues, while Grok AI lacks sufficient user reviews to make a direct comparison.

Full reviews: AI Video Generator · Grok AI

AI Video Generator (HeyGen) excels in creating realistic AI avatars and voice cloning, making it a powerful tool for content creation and branding. However, users frequently express frustration with its credit-based pricing model, which often feels deceptive and limits usage even on paid plans. Grok AI, despite its high lifetime rating, has no specific user reviews provided for a detailed comparison.

Head to head

Features & Capabilities edge: AI Video GeneratorR5R6R7R14
AI Video Generator AI Video Generator is praised for its ability to create clean custom avatars and perform voice cloning incredibly well, with users finding it effective for content creation, branding, and even overcoming self-confidence issues R5R14. It offers consistent character and multi-scene expressions for professional marketing videos . Some users note its lip-sync features and ability to generate realistic characters . However, recent updates have been criticized for ruining the realism of avatars, making facial expressions and gestures exaggerated R7R21. There are also requests for more control over avatar accessories and the ability to regenerate videos R6.
Grok AI No specific user reviews are available to detail Grok AI's features and capabilities.
Ease of Use edge: AI Video GeneratorR2R3R18R34
AI Video Generator Many users find AI Video Generator easy to use and intuitive, enabling fast content creation R2R18R34. However, some describe it as confusing, producing unexpected results, and having inconsistent sign-in issues R3. There are also complaints about the lack of search or filter options for avatars and languages .
Grok AI No specific user reviews are available to detail Grok AI's ease of use.
Reliability & Performance tieR4R11R13R41
AI Video Generator AI Video Generator is frequently criticized for being slow, with videos taking a long time to load or process R4R11. Users report issues with projects not loading after updates R41 and an inability to view or edit video agent projects on the mobile app R44. Some also mention glitchy avatar movements, such as avatars randomly touching their hair R13.
Grok AI No specific user reviews are available to detail Grok AI's reliability and performance.
Price & Value tieR1R9R12R13
AI Video Generator AI Video Generator faces significant criticism regarding its pricing model and perceived value. Users frequently report that paid plans, including those marketed as 'unlimited' or annual subscriptions, quickly run out of credits, forcing them to purchase more R1R9R13R15. This leads to feelings of being cheated or that the app is a 'scam' R19. Some users who paid for a subscription were then asked to pay again to download their created videos . Despite these issues, some users feel the app is worth paying for due to its results R12.
Grok AI No specific user reviews are available to detail Grok AI's price and value.
Support tieR35R38
AI Video Generator One user reported receiving immediate, kind, and supportive responses from the support team when unable to locate a feature R38. However, another user mentioned paying for the app but having no app support and being unable to log in R35.
Grok AI No specific user reviews are available to detail Grok AI's support.
Pick AI Video Generator if

You need advanced AI avatar generation and voice cloning for professional content and are willing to navigate a potentially frustrating credit-based pricing model R5R14. You prioritize high-quality, realistic (pre-update) or consistent avatars for branding and marketing .

Pick Grok AI if

There are no specific user reviews for Grok AI to recommend it over AI Video Generator.

Evidence note: The comparison is heavily skewed towards AI Video Generator as no specific user reviews were provided for Grok AI, despite its high lifetime rating. Therefore, all 'B_take' sections reflect this lack of data. The 'Free vs Paid' asymmetry is noted for AI Video Generator, where much negativity stems from the perceived deceptive nature of its paid tiers and credit system, rather than free-tier friction R9R15R19.

Frequently asked

Is AI Video Generator (HeyGen) truly unlimited with a paid subscription?
No, despite marketing claims, many users report that paid plans, including creator plans and annual subscriptions, are not truly unlimited and quickly run out of credits, requiring additional purchases R9R13R15R19.
What are the main issues with AI Video Generator's avatars?
Users have reported that recent updates have made avatars' facial expressions, eye movements, and gestures overly exaggerated and less realistic R7R21. Additionally, avatars can sometimes have unrequested accessories, misspellings in lip sync, or exhibit glitchy movements R6R13.
Is AI Video Generator fast and reliable?
Many users find AI Video Generator to be glacially slow in processing videos and avatars, with some experiencing wait times of 24 hours or more R4R11. There are also reports of projects not loading and issues with the mobile app's functionality R41R44.

What reviewers actually said

Built only from these 60 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R5] AI Video Generator 5/5 · US Characters that don’t drift and sound correct: Heygen is currently the only platform that can pull off clean custom avatars and voice cloning incredibly well. I have been looking for this for months, found it!
  2. [R6] AI Video Generator 3/5 · US Need regeneration per video created: The app is ok however if we could get at least 2 free regenerations that would be awesome. I say this because when creating the video my avatar gets added accessories I never request for example my avatar gets added boxing gloves, radios, etc which I did not request so 2 free regenerations with every video created would be great as well as being able to tell it
  3. [R7] AI Video Generator 2/5 · US HeyGen’s New Update Ruined Realistic Avatars: This new update honestly ruined the realism for me. Before the update, the avatars felt subtle, elegant, natural, and cinematic. The movements were controlled and believable, especially for podcast-style or luxury content. Now the facial expressions, eye movements, lip movements, and gestures are extremely exaggerated and over animated, even when usi
  4. [R14] AI Video Generator 5/5 · US HeyGen: Best I’ve seen so far for avatars and voice cloning.
  5. [R2] AI Video Generator 5/5 · US Best app: It’s cool and do what you want
  6. [R3] AI Video Generator 3/5 · US Good but flawed and confusing: I like this app, and have used it a bit. I find it very confusing. Seems straightforward, but often produces surprises that I don’t want. Can’t seem to sign-in consistently. Sometimes my avatars are gone. It acts like I have two different accounts but with the same email address…. ????? Also, the site can be very slow. Currently on free tier.
  7. [R18] AI Video Generator 5/5 · US I love this company!: It makes content creation fast & fun
  8. [R34] AI Video Generator 5/5 · US Love It❤️❤️❤️: So easy to use love making videos with this, highly recommended
  9. [R4] AI Video Generator 1/5 · US Does not work at all: Waiting for 24 hours for my video to load to give it a fair chance. Did more than one video. Both 0 percent
  10. [R11] AI Video Generator 1/5 · US Sloooooow: Tried to make avatars and short videos. App is GLACIALLY slow in processing. Like think back to the dial up days. Latest iPhone and iOS. Clean install. Apps runs slower than my nana. Uninstalled.
  11. [R13] AI Video Generator 1/5 · US Not good: The creator plan makes it seem as though you can make unlimited videos, and that is not true. I made less than 10 videos and I’m already being told that I need to buy more tokens in order to make more videos. The videos aren’t great either. My avatar will be speaking and randomly touch her hair.. just weird glitchy things. There are definitely better AI options out there.
  12. [R41] AI Video Generator 1/5 · GB My projects not loading: I got two errors on my projects not being able to load on my app following the latest iPhone update. Please fix immediately
  13. [R1] AI Video Generator 1/5 · US Pago: No tiene descargas gratis. Es totalmente paga
  14. [R9] AI Video Generator 1/5 · US So tired of lies: I joined under the impression that it was unlimited and you only get charged credits for premium items. I hit the cap within 24 hours and I was just warming up. I don’t mind even paying more for unlimited but I never liked counting credits. I have canceled 1 day in so if you are here for the same , I’ll save you some time. They billed me $29 for 1 day use. I will contact my Amex
  15. [R12] AI Video Generator 5/5 · US I am overly pleased with the results: I was a bit skeptical at first because I have tried other apps and lost so much money and time. I saw their ad on instagram and decided to give it a try. My first attempt was amazing. I can’t wait to see what other projects that I can create with HeyGen’s help. I’ll let everyone know in a week what else I think 🤗
  16. [R35] AI Video Generator 1/5 · GB I can’t login: I’m paying there is no app support it doesn’t load. I liked it the one time I used it although there really is no free version you have to pay to do anything useful I cannot login I get an error on my email !!
  17. [R38] AI Video Generator 5/5 · US Best Customer Care: I was not able to locate a feature on my end, so I emailed the support team and received immediate, kind, and supportive responses! Such a cool app with a team that really cares supporting it.
  18. [R15] AI Video Generator 1/5 · US I do not recommend: I do not recommend it. I signed up for a one-week plan to test it. By my third video, I was already out of credits. They told me to either pay for a full month or buy more credits. I paid for a month, made a few videos, very few, and then again they said I no longer had access to premium features and would need to purchase more credits. In short, I don’t recommend it because you
  19. [R19] AI Video Generator 1/5 · US 30 Dollars for a Paperweight, Zero Flexibility and Predatory Limits: I am officially done with HeyGen. I signed up for the $30/month Creator plan to move forward with a professional film pitch, but the experience has been a total disaster. First, the value is non-existent. I managed to get fewer than 20 short generations before hitting a credit wall. For a thirty-dollar monthly fee, that is an insu
  20. [R21] AI Video Generator 1/5 · US lfixed avtar 4 photo to video: before update its accurate give the result, if you do now, you can see it chage the person photo totally different, and looking duplicate, i also complaint to email and send proof
  21. [R44] AI Video Generator 4/5 · US Mobile App Issue, Unable to View or Edit Video Agent Projects: Hello, I’m experiencing an issue with the mobile app that I didn’t have before. When working with the Video Agent, I used to be able to access and edit videos that were already in progress, for example, changing images or adjusting the avatar’s voice. Now, I’m unable to even view those videos in the mobile app, let alone edit them.

Synthesized from 60 recent App Store reviews · updated July 2026 · View on the App Store