SpeakFlow and TellyPrompter are the two closest neighbours in this category: both run in the browser, both follow your voice, both treat "open a tab and read" as the whole setup. So this comparison comes down to the differences that remain when the platform is the same — what each one's free tier actually contains, what happens after the take, and who each product is really for. We will be straight about where SpeakFlow wins, because it genuinely does win some of this.
All SpeakFlow details below are taken from SpeakFlow's own published pricing page in August 2026, on their yearly billing view. Pricing and plans move — check their site before deciding.
What SpeakFlow is
SpeakFlow is a polished online teleprompter built around Flow, their voice-activated scrolling, with script writing and organisation built in and a strong collaboration layer on top. It works across Windows, Mac, iOS and Android through the browser, with a desktop app available, and using it starts with creating an account.
As published in August 2026: the Free plan includes the teleprompter, auto scrolling, a limited version of Flow, script creation and formatting, and seven days of script history. Plus, at $15 a month billed once yearly, adds unlimited Flow, recording with one hour of video storage, an Overlay virtual teleprompter, bookmarks, voice commands, multi-device sync, AI writing tools, unlimited script history, commenting and real-time script collaboration, and API access. Studio, at $99 a month billed yearly, adds client workspaces for up to twenty-five members and ten hours of video storage. Monthly billing is available at higher rates on their monthly pricing view.
Where SpeakFlow wins
Collaboration is the real product. Real-time script collaboration, commenting, client workspaces, team membership — if scripts in your world are written by one person, approved by another and read by a third, SpeakFlow has built for that properly and TellyPrompter simply has not. TellyPrompter's library is one person's library.
The writing tools live inside it. AI writing assistance and revision history in the same place you prompt from is a genuine workflow convenience if you draft in the tool. TellyPrompter expects you to arrive with a script — from anywhere — and paste or import it.
Cloud video storage. SpeakFlow stores your recordings on their plans' terms, which means your takes are wherever you log in. TellyPrompter records to a local file you own and does not hold your video at all — we think that is the right default, but if takes-in-the-cloud is what you want, it is their feature, not ours.
An API. Plus includes API access. If you are wiring a prompter into a bigger system, that is a real door TellyPrompter does not have.
Where TellyPrompter differs
The free tier is the whole prompter, without an account. TellyPrompter's voice-following is not a limited taster — the full following engine, all three scroll modes, 34 languages with LTR and RTL support, mirror mode, the local script library and unwatermarked in-app recording are free, and there is no sign-up on the path from pasting a script to running it. SpeakFlow's free plan limits Flow and starts with account creation. We do keep a paid tier — cloud sync of the library across devices — and the reasoning behind what is free and what is not is its own article.
Offline on shoot day. TellyPrompter installs as a PWA, and after the first visit the prompter works offline — a room with no reliable wifi is a normal place to open it. The full piece on why offline matters on shoot day makes the case; for SpeakFlow's offline behaviour, check their documentation, as that is their claim to make, not ours.
Where recognition runs, stated plainly. For TellyPrompter: speech recognition runs on the device and the audio is never uploaded. We make no claim about SpeakFlow's implementation either way — their privacy policy is the place to check — but if that sentence is one you want to be able to say about your own setup, it is the one we can stand behind.
What the take leaves behind. Because the following engine knows which word you are on at every moment, each take carries per-word timing: script-accurate SRT and VTT captions with no transcription pass, a post-take stumble report, per-take timings, and a measured read-time from your own rehearsal. Voice commands — ending a take, retaking, dropping a stumble marker — are free rather than a paid-tier feature.
The honest limits, ours included
Voice-following in TellyPrompter depends on the browser's speech recognition, which Firefox does not provide — constant and sound-level modes work there — and recognition quality is the browser's, not ours, so it varies by platform, language and microphone. There is no collaboration, no cloud video, no AI writing and no API, and none of those are on the way as afterthoughts; the product is deliberately one person's prompter.
How to choose
Choose SpeakFlow if scripts are a team sport in your work — collaborators, clients, comments, approvals — or if you want writing tools, cloud-stored recordings and an API in the same subscription.
Choose TellyPrompter if you are one person recording yourself and you want the complete voice-following prompter free, working offline, with no account between you and a running script — and captions, stumble reports and read-times waiting when the take ends. The category-wide comparison covers the rest of the field. And since both products run in a browser, the honest advice is the cheap kind: open each one and read the same script aloud for two minutes. The one that follows you better is the answer, whatever either of us writes.