StageMirror
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About this app
StageMirror is a measurement instrument for the way you speak.
Record up to three minutes on your phone. StageMirror transcribes the take, counts your filler words, measures your pace and every pause longer than 1.5 seconds, and estimates from the camera where your eyes went and how you held yourself. Then it hands you one thing to fix — with the quote from your own transcript that proves it.
Built for founders with a pitch, a demo day or an all-hands coming up.
WHAT IT MEASURES
• Filler rate — "um", "uh", "like", "you know", counted against your total words. Target: under 2%.
• Pace — words per minute. Target: 130 to 160.
• Pauses — deliberate silences over 1.5 seconds. Target: 2 to 3 a minute.
• Eye contact — the share of sampled frames where you were looking at the lens.
• TruthPlane, posture and gestures — where your hands worked, how upright you stayed, how much you moved.
Every camera-derived number is an estimate from a phone camera, not a clinical measurement, and is labelled that way everywhere it appears.
COACHING THAT HAS TO QUOTE YOU
Coaching notes are checked against your transcript before you ever see them. A note that cannot quote what you actually said, or point at a real timestamp in your take, is dropped — and the app tells you how many were withheld rather than quietly padding the list. Coaching is AI-generated and labelled as such.
THE 14-DAY FOUNDER SPEAKER INTENSIVE
A day-by-day programme. Each day names one focus, gives you a warm-up, and asks for one take. Day 7 and Day 14 are milestone days scored against a rubric, so you find out whether the work held. The programme is not a paid add-on — it is free, and Pro is only about the caps coming off.
BEFORE THE RED LIGHT
A guided warm-up and a paced breathing exercise, so the first take of the day is not the worst one. In the studio: a five-second countdown, framing guides for head and hands, and a teleprompter that scrolls at your pace.
PROGRESS
Every metric plotted over time, plus your rubric results, so you can see whether last month's fix actually stuck.
FREE AND PRO
Free — 5 analyzed takes a month, the whole 14-day programme, and every metric. Supported by a small banner ad. No card.
Pro — unlimited analyzed takes, verified-citation coaching on every one, camera metrics on every take, and no ads. $18.99 per month or $149.99 per year.
Pro is a subscription that renews automatically until cancelled. Cancel any time in the Google Play Store under Subscriptions; cancelling at least 24 hours before the period ends stops the next charge. Payment is charged to your Google Play account.
PRIVACY
Ads on the free plan are served by Google AdMob and are non-personalized — we ask for your choice first, and we never send your recordings, transcripts or scores to an advertiser. Your recordings are yours. We never train models on your data. Recordings are private to your account, deleted on a schedule, and you can delete your account and everything in it from inside the app — Account, then Delete account.
WHAT STAGEMIRROR WILL NOT DO
It will not score your personality, guess your emotions, or tell you that you seemed nervous. It counts what can be counted, estimates what can only be estimated and says which is which, and stays quiet about the rest.
Record up to three minutes on your phone. StageMirror transcribes the take, counts your filler words, measures your pace and every pause longer than 1.5 seconds, and estimates from the camera where your eyes went and how you held yourself. Then it hands you one thing to fix — with the quote from your own transcript that proves it.
Built for founders with a pitch, a demo day or an all-hands coming up.
WHAT IT MEASURES
• Filler rate — "um", "uh", "like", "you know", counted against your total words. Target: under 2%.
• Pace — words per minute. Target: 130 to 160.
• Pauses — deliberate silences over 1.5 seconds. Target: 2 to 3 a minute.
• Eye contact — the share of sampled frames where you were looking at the lens.
• TruthPlane, posture and gestures — where your hands worked, how upright you stayed, how much you moved.
Every camera-derived number is an estimate from a phone camera, not a clinical measurement, and is labelled that way everywhere it appears.
COACHING THAT HAS TO QUOTE YOU
Coaching notes are checked against your transcript before you ever see them. A note that cannot quote what you actually said, or point at a real timestamp in your take, is dropped — and the app tells you how many were withheld rather than quietly padding the list. Coaching is AI-generated and labelled as such.
THE 14-DAY FOUNDER SPEAKER INTENSIVE
A day-by-day programme. Each day names one focus, gives you a warm-up, and asks for one take. Day 7 and Day 14 are milestone days scored against a rubric, so you find out whether the work held. The programme is not a paid add-on — it is free, and Pro is only about the caps coming off.
BEFORE THE RED LIGHT
A guided warm-up and a paced breathing exercise, so the first take of the day is not the worst one. In the studio: a five-second countdown, framing guides for head and hands, and a teleprompter that scrolls at your pace.
PROGRESS
Every metric plotted over time, plus your rubric results, so you can see whether last month's fix actually stuck.
FREE AND PRO
Free — 5 analyzed takes a month, the whole 14-day programme, and every metric. Supported by a small banner ad. No card.
Pro — unlimited analyzed takes, verified-citation coaching on every one, camera metrics on every take, and no ads. $18.99 per month or $149.99 per year.
Pro is a subscription that renews automatically until cancelled. Cancel any time in the Google Play Store under Subscriptions; cancelling at least 24 hours before the period ends stops the next charge. Payment is charged to your Google Play account.
PRIVACY
Ads on the free plan are served by Google AdMob and are non-personalized — we ask for your choice first, and we never send your recordings, transcripts or scores to an advertiser. Your recordings are yours. We never train models on your data. Recordings are private to your account, deleted on a schedule, and you can delete your account and everything in it from inside the app — Account, then Delete account.
WHAT STAGEMIRROR WILL NOT DO
It will not score your personality, guess your emotions, or tell you that you seemed nervous. It counts what can be counted, estimates what can only be estimated and says which is which, and stays quiet about the rest.
Record three minutes. See your fillers, pace, pauses and eye contact.
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What’s new
Practise a talk on camera and get feedback on your delivery. Every practice programme take fits the three-minute recorder limit.
App support
About the developer
DEEPFAI INC.
support@deepfai.com
535 Fessler Ave
Naperville, IL 60565-1215
United States
+1 630-965-0574
