Head-to-head · Verified August 2026
Pick BigMotion AI if Instagram auto-posting is essential and its first-month offer fits your test. Pick ShortsFast if you want lower predictable renewal pricing and parallel niche testing. BigMotion lists $19, $39, and $79 first-month prices that renew at $39, $89, and $179 per month, with no refunds for paid subscriptions as of 29 August 2026.
$29/mo — Starter · $49/mo — Pro
AI SaaS that generates and auto-publishes faceless short-form videos to YouTube Shorts and TikTok on a single schedule.
$19 first month, then $39/mo for Hobby
Automated faceless video series with scheduled publishing to YouTube Shorts, TikTok, and Instagram Reels.
BigMotion and ShortsFast both automate scripts, visuals, narration, captions, and publishing. BigMotion covers three social platforms and uses a one-series scheduled workflow. ShortsFast covers YouTube Shorts and TikTok, with a Pro plan built around three parallel series and predictable flat monthly pricing.
Pricing and feature claims on this page come from public pages checked on the dates shown.
BigMotion advertises first-month prices of $19 for Hobby, $39 for Daily, and $79 for Pro. Its public pricing fine print says those plans renew at $39, $89, and $179 per month. Compare the renewal price, not only the first payment.
No. BigMotion's public FAQ says paid subscriptions are non-refundable, although users can cancel to stop future renewals. ShortsFast offers a 7-day money-back guarantee.
The public plans list about 14 videos per month on Hobby, 30 on Daily, and 60 on Pro. BigMotion's user guide describes one active series following the selected schedule.
ShortsFast is the stronger alternative for transparent renewal pricing, a refund window, and three parallel niche series. BigMotion is stronger when Instagram auto-posting and higher single-series output are required.
Weighing BigMotion AI against the rest of the field? Here is ShortsFast next to every other tool, one at a time.
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7-day money-back guarantee. Cancel anytime.