Free TikTok virality checkers: what's actually free

Published August 2026

Genuinely free options fall into three groups: permanent free tiers with monthly caps, browser checklists and formula tools that cost nothing and need no account, and free-to-download apps that wall the analysis behind a subscription. Check the cap, the card requirement, and whether your video gets uploaded before you sign up.

You want a read on a video before you post it, and you would rather not pay to find out. Reasonable. The problem is that "free" means at least five different things on the pricing pages in this category, and only some of them get you an answer without an account, a card, or an upload. Everything below is what each tool published on its own pricing, privacy and help pages as of 28 August 2026. Free tiers in this category change without notice, so check the page yourself before you sign up.

What does "free" mean on these pricing pages?

Five patterns, and telling them apart matters more than any feature list.

A real free tier. A $0 row on the pricing page with an allowance that resets every month. PreViral and quso.ai both publish one. You create an account; you do not hand over a card.
A credit grant dressed as a tier. A fixed number of credits once, at signup, then nothing. Virality Predictor grants 10 credits on sign-up and charges 5 credits per prediction, which is two runs total. Its own pricing FAQ calls this a hands-on trial rather than a plan.
A one-shot trial. No $0 row anywhere. Klap's pricing page lists three paid tiers and no free plan; the free offer is one video, no card required.
Free to download, paid to use. The app costs nothing in the store and the features sit behind a subscription. GoViral's App Store description says a paid subscription is required to access all features and tools in the app, and ReelRise's terms say access to the features requires a paid subscription. ReelTok's own iOS app is in this category too.
Free browser tools that never see your video. Formula and checklist tools that run on the page, cost nothing, and ask for nothing. They score what you type, not what you shot.

Which free options actually exist right now

Four tools publish something you can use without paying. They are not doing the same job. Two more are free only to install.

PreViral: three idea scores and one analysis a month

PreViral's free plan is $0 with 3 Score predictions plus 1 Short or Long Analysis each month, and its pricing page states no card is required. The two products are different things. Score reads a typed description of an idea before you film, so no video is involved. Analysis is the one that takes a finished cut, uploaded as a file or pasted as a link. Their privacy policy lists uploaded video in the retention table as deleted after processing, and names the outside AI subprocessors it is routed to: Twelve Labs for shorter video analyses, and Google Gemini for metadata, thumbnails and video or image content where required. Every entry point goes to a sign-up page, so there is no anonymous result path. One more thing worth knowing before you lean on the number: PreViral publishes no accuracy rate at all and says so directly, and its public ledger showed zero of fifty live outcomes measured when it was checked.

quso.ai: 75 credits a month, but it scores its own clips

quso.ai's free plan is $0 with 75 monthly credits, 720p exports, TikTok publishing and seven-day data retention. What one credit buys is not published, so the practical size of that allowance is unknown. The bigger catch is what the Virality Score attaches to. quso.ai's workflow is upload a long video, let it cut clips, and each generated clip gets a score so you know which to post. Whether you can run that score on a finished vertical video you shot yourself is not stated on any of their pages. The scale is compressed too: every clip scores between 75 and 99, so the number ranks clips against each other rather than judging one video against zero. Processing is cloud-side, and the privacy policy says data described as anonymised, including the video you uploaded, is shared with AI models.

Virality Predictor: two runs, then it stops

The free plan is $0 with no credit card and 10 credits on sign-up. A prediction costs 5 credits. That is two predictions, and the pricing FAQ describes it as a hands-on trial rather than an ongoing plan. Uploads are capped at 100 MB and 20 seconds, reach their servers, and are then forwarded to Replicate's API. Before you put an unreleased asset through it, note that the homepage FAQ says uploads are purged from their servers once the score is generated, while the privacy policy says they collect and store the videos you upload and keep generated content until you delete it from the dashboard. Both cannot be true. The site also contradicts itself on whether sign-up is required at all.

Klap: one video, and it is a clipper

Klap's pricing page has no free plan. The offer is one video, no card required, and Klap says exports carry no watermark even then. It is also solving a different problem: Klap takes a long video you already have, cuts ten or more vertical clips, and ranks those clips with a 0-100 Virality Score so you post the best first. It does not score a finished short you made somewhere else and are about to publish. Files reach Klap's servers either way, upload or pasted link, and there is no local-only path.

GoViral and ReelRise: free to download, not free to use

Both are mobile apps that install for nothing and then require a subscription. GoViral's App Store description says a paid subscription is required to access all features and tools in the app, and its own site's "Is Go Viral AI Free?" answer replies only with prices, never describing anything you get for free. Those prices do not reconcile either: the site publishes $9.99/month and $29.99/year, while the App Store listing shows two in-app purchases labelled Premium Yearly $9.99 and Premium Weekly $29.99, so the real number is only visible at the paywall. ReelRise's terms say access to the features requires a paid subscription; the App Store attaches a 3-day free trial to the annual tier alone, while the terms describe trials as conditional and new-users-only. Both send your video to servers. ReelRise's privacy policy names Google, Anthropic, OpenAI and Alibaba Cloud as the AI providers that receive it.

What this site gives away, and what it does not

The straight version: the free tools on this site do not analyze video. The virality score checker asks eight questions about your next post — hook timing, length, text overlay, loop potential, trend fit, CTA, niche consistency and caption — then computes a 0-100 score from your answers in the browser. The hook generator builds openers from formulas based on the topic you type. The hook, idea, caption and bio libraries are swipe files. All of it runs on the page, costs nothing, needs no account, and sends nothing anywhere. It also cannot see whether your hook lands in the first second, whether your pacing sags at second four, or whether your overlay is readable at a glance. Two creators can answer the eight questions identically and post videos that perform nothing alike.

The video analysis is the paid part, and pretending otherwise would make this page useless. ReelTok is the iOS app this site belongs to, and it scores your actual footage 0-100 before you post. Held to the same checks as everything above: it is iPhone only, requires iOS 26 or later, and there is no Android app and no web version, so on anything but a recent iPhone it is not an option at all. It is free to download with an optional auto-renewing subscription billed through Apple, and there is no free trial, which means it has no free tier to compare against the four above. What is checkable about it: the video file is never uploaded, no account or email is required, and the analysis happens before the post goes live rather than after. The score is a directional estimate, not a promise, which is the same standard worth holding every tool on this page to.

If you want a free read today, use a checklist and accept what it is: a structured self-assessment, not AI video analysis. If you want something that watches the footage, every option on this page charges for it somehow, in money, in an account, or in an upload.

Five checks before you hand over an email

Find the $0 row on the pricing page, not the "start free" button on the homepage. A landing-page button tells you nothing; a $0 column with a stated allowance does.
Check whether the allowance resets. A monthly cap that comes back is a tier. Credits granted once at signup are a trial with a friendlier name.
Look for the card requirement in writing. PreViral, Virality Predictor and Klap all state that their free offer needs no card, and quso.ai's $0 plan does not ask for one either. If a tool does not say it anywhere, assume the card comes up.
Ask what the free thing actually does. quso.ai's score attaches to clips it cut out of your long video. Klap's free video is a clipping job. PreViral's free Score reads a typed idea, not a file. None of those is "score the video I just shot."
Read the privacy policy, not the FAQ. When the two disagree, the policy is the one written by lawyers, and on this list more than one vendor's policy says something different from its marketing page. If the video is unreleased and that matters to you, that paragraph is the one to read.

Can a free tool tell you a video will go viral?

No, and the honest vendors say so themselves. TikTok, Instagram and YouTube do not publish their ranking internals, so every score in this category is inference presented as a number. Look at what the vendors publish about their own accuracy: PreViral says no accuracy number gets quoted before the sample carries it, and its ledger had no completed measurements. quso.ai's help centre calls the virality score a prediction based on content analysis, not a guarantee. Virality Predictor's pricing FAQ tells you to treat the output as a directional signal, not a guaranteed performance forecast. Klap publishes no accuracy figure anywhere on its site. ReelRise publishes none and its terms disclaim any performance guarantee.

The one exception is instructive. GoViral publishes an 89% accuracy figure in its hero, its FAQ, its meta description and its structured data, along with per-score-band success rates, and contradicts itself on the same page: the 80-89 band is given both a 78% success rate and a 67% chance of reaching 100K views. There is no methodology, no definition of viral, no time window and no source anywhere on the site. Its own terms then say it cannot guarantee that following its recommendations produces viral content. A number that precise with nothing behind it is a marketing decision, not a measurement.

What a score is genuinely good for is comparison and triage: is this cut better than that cut, is the hook doing anything, is the video structurally set up to hold attention past the first second. That is worth something. It is not a forecast, and no price makes it one.

A workflow that stays free

If you post often and refuse to pay anything, this is roughly the most the free layer gives you without kidding yourself.

Run every video through a checklist before it goes up. It is the only part of this with no cap, and it catches the boring failures: a slow first second, an outro that kills the loop, a caption nobody would search.
Fix the completion factors first: hook timing, length, text overlay. No platform publishes what it weighs, but these are the ones you can watch working in your own retention graph, and they decide whether anyone stays long enough for the rest to matter.
Save the metered free tiers for the posts you actually care about. Three idea scores a month goes further on three concepts you are deciding between than on three of your daily uploads.
Do not upload an unreleased asset anywhere, free tier or paid, until you have read the retention paragraph in that vendor's privacy policy.
After you post, read your own retention graph. It costs nothing, it is yours, and it is the only feedback in this whole list that comes from real viewers instead of a model guessing about them.

Facts checked 28 August 2026. Every price and feature claim on this page was read from the vendor’s own live pages on that date, and products change without notice. ReelTok is made by Viral App Labs, who publish this page — it is listed here as one option among several, not as the recommendation. If something about your product is wrong or out of date, email us and we will correct it.

Know your score before you post

ReelTok's AI analyzes your video on your iPhone — a 0–100 virality score, predicted reach, hooks, and fixes before you share.

Frequently asked questions

Is there a completely free TikTok virality checker?

Yes, with a trade-off. Browser checklists like the one on this site are free with no cap and no account, but they score your answers about a video, not the footage. Every tool that analyzes an actual video file meters its free version: PreViral gives one analysis a month, quso.ai 75 credits, Virality Predictor two predictions total, Klap one video.

Do free virality checkers ask for a credit card?

The ones with published free offers say no. PreViral states no card is required, Virality Predictor grants 10 credits with no credit card, and Klap's one free video needs no card either. quso.ai asks for a free account but not a card. All four still require an account, so the real price of free here is an email address, not a payment method.

Does a free tier mean my video stays private?

No — free and private are unrelated. Every tool here that analyzes a video file uploads it. PreViral's privacy policy routes video to Twelve Labs and Google Gemini, quso.ai names Google Cloud, AWS and Firebase among data recipients, Virality Predictor forwards uploads to Replicate's API, and ReelRise names Google, Anthropic, OpenAI and Alibaba Cloud. Read the retention paragraph before uploading anything unreleased.

Are ReelTok's free tools AI video analysis?

No. The virality score checker and hook generator on this site run checklists and formulas in your browser — they score what you type about a video, never the video itself. That is exactly why they cost nothing and need no account. The AI that reads real footage is the ReelTok iOS app: iPhone only, iOS 26 or later, free to download with a paid subscription and no free trial.

Why are free video analysis tiers so small?

No vendor publishes its reasoning, but the pattern is consistent. Checklist and formula tools cost almost nothing to run, so they go uncapped. Tools that process a video file pay for compute and for outside AI providers — PreViral, quso.ai and Virality Predictor all route uploads to third parties — so those free tiers get metered in analyses or credits.

How accurate are free virality scores?

Nobody publishes a verified number. PreViral says explicitly that no accuracy figure gets quoted before its sample supports one, and its ledger showed zero completed outcome measurements. quso.ai, Klap, Virality Predictor and ReelRise publish none at all. GoViral publishes 89%, gives no methodology, and contradicts its own score-band figures on the same page. Treat every score as directional.

What is the difference between a free checklist and a free AI analysis?

A checklist scores the decisions you report — hook timing, length, loop, caption — so it is only as honest as your own answers and cannot judge execution. AI analysis reads the actual file, which catches delivery, pacing and readability that a checklist misses. The trade is what you give up to get it: an account, an upload, or a subscription.

Sources

Every factual claim above was read from one of these first-party pages on 28 August 2026. Vendor pages change without notice — if one of these no longer says what this page reports, the page is wrong and we want to know.

More comparisons: Virality score tools compared: what each one actually does, and Do virality scores actually work?.