Comparison

Prometheus Mobile STO vs Live Caption AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Prometheus Mobile STO

Features
Read full description

Prometheus STO Mobile is a Prometheus Group Platform that is an easy-to-use interface and framework to address shut-down, turn-around, and outages of heavy assets in various industries. Prometheus Group is the leading enterprise asset management software solution provider, covering your plant maintenance, operations, and safety needs from planning to execution and beyond.

About

Live Caption AI

This app converts spoken words into text in real-time, aiding content creators, students, and those with hearing impairments. It offers instant transcription, note-taking, and remote viewing of captions via web links.

Highlights
  • Instantaneous transcription
  • Accessibility for hearing impaired
  • Automated lecture transcription
  • Remote caption viewing via web links
  • Save and tag transcripts
  • Searchable spoken information
Features
Read full description

Live Caption AI turns speech into live captions — on your screen, or on every phone in the room. Built for churches, conferences, classrooms, meetings and events where people need to follow every word. LIVE CAPTIONS Tap the mic and captions appear as people speak. Captioning on your device is free; Professional adds cloud speech recognition for accents, noisy rooms and distant microphones. BROADCAST TO EVERY PHONE Share a QR code and your audience reads the captions live on their own phones — no app or account needed for viewers. Reserve up to 5 broadcast links ahead of time and print their QR codes on bulletins, programs or signs; the same code works every week. LIVE TRANSLATION Translate captions into any of 29 languages as people speak, and your audience can follow along in the translated language on their phones. Professional includes 8 hours of translation each month, with top-ups available. SPECIALIZED RECOGNITION Choose General, Medical, Worship & Ministry, or Finance & Earnings — and add up to 100 Custom Terms of your own: names, places, scripture books, product names, specialist vocabulary. AI SUMMARIES Turn any session into a Brief Overview, Detailed Summary, Action Items, or Meeting Notes in one tap. YOUR TRANSCRIPTS Every session is saved to History. Search them, and export as TXT, SRT subtitles, JSON or PDF. PRIVACY We never store your session audio. Transcripts stay in your account until you delete them, and you can delete your account and data from inside the app at any time. PLANS • Free: on-device captioning • Professional: $19.99/month or $199.99/year — cloud speech recognition, live translation, broadcasting to phones, reserved broadcast links, AI summaries and Custom Terms

Screenshots

Prometheus Mobile STO4 screens
Live Caption AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Prometheus Mobile STO at none against Live Caption AI's 14. Prometheus Mobile STO also leads on iOS requirement (13.0 vs 16.4). Live Caption AI's advantage is update cadence (every 9 days vs every 2 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Live Caption AI sells 14 in-app purchases, starting at $0.99 per month. Prometheus Mobile STO asks for nothing beyond the download.

UpkeepUpdate frequency

Prometheus Mobile STO ships an update every 2 months, Live Caption AI every 9 days. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Prometheus Mobile STO versus Live Caption AI: the parameters behind the verdict, then further details
ParameterPrometheus Mobile STOLive Caption AI
PriceFreeFree
Rating—3.0 (2 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size34 MB48 MB
Age rating17+4+
DeveloperPrometheus Group, IncLive Caption, Inc.

In-app purchases

None

Prometheus Mobile STO

No in-app purchases

14 purchases

Live Caption AI

Subscriptions8
  • 1/4 Hour Monthly Subscription$0.991 Month
  • 1/2 Hour Monthly Subscription$1.491 Month
  • Unlimited, Personal Use1 Month trial$3.991 Month
Show 5 more
  • 2 Hour Monthly Subscription$4.991 Month
  • Professional Monthly (Individual)$19.991 Month
  • 10 Hour Monthly Subscription$24.991 Month
  • 20 Hour Monthly Subscription$39.991 Month
  • Team Professional (Yearly)$599.991 Year
One-time6
  • Extend My Trial$0.99
  • 1/4 Hour Public Weblink$1.49
  • Extend 2 Hours + Weblink$1.99
Show 3 more
  • 1/2 Hour Public Weblink$2.99
  • 2 Hour Public Weblink$9.99
  • 10 Hour Public Weblink$49.99

Questions

Is Prometheus Mobile STO free?
Prometheus Mobile STO is free to download, with no in-app purchases.
Is Live Caption AI free?
Live Caption AI is free to download, with in-app purchases available.
Do Prometheus Mobile STO or Live Caption AI have ads?
Neither Prometheus Mobile STO nor Live Caption AI shows ads.
Which is updated more often, Prometheus Mobile STO or Live Caption AI?
Prometheus Mobile STO ships an update every 2 months, and Live Caption AI every 9 days. Most recently, Prometheus Mobile STO was updated on October 19, 2026 and Live Caption AI on October 24, 2026.

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