Comparison

Auto Caption Video Subtitles vs Subly

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

Head to head
About

Auto Caption Video Subtitles

Automatically generate accurate closed captions and subtitles for your videos in over 99 languages. Enhance engagement with customizable styles, background music, and silence removal. Perfect for content creators on platforms like TikTok and Instagram Reels.

Highlights
  • AI-accurate closed captioning
  • 99+ languages supported
  • 100+ subtitle styles
  • Background music library
  • Automatic silence removal
  • Video cropping and editing
Features
Read full description

Powered by AI-accurate closed captioning and supporting 99 different languages and translation, this is the perfect app for content creators on Youtube Shorts, Instagram Reels, and TikTok looking to reach a wider audience and keep viewers more engaged. With over 100 different styles to choose from—from elegant and minimal to bold and energetic—each with its own unique font and animation, you can give any vibe you want. Add professional-looking captions and subtitles to your videos with ease, then remove dead air, and enhance your video with background music from our curated library or import your own tracks. Choose any video up to 5 minutes long to edit. Customize the colors of your captions to match your video, and make edits to your transcriptions as needed. Highlight important words to draw attention to key points in your video. Adjust timing and add your own captions if you want to draw special attention to some parts. Download Auto Caption now and start reaching more people with your videos! Features: ▶ Accurate transcription ▶ 100+ unique subtitle styles across different themes and vibes ▶ Add background music to your videos ▶ Built-in teleprompter for recording ▶ Automatic silence removal ▶ Automatically crops to the right size ▶ Never asks for personal information ▶ Your videos never get sent to the cloud ▶ No ads, no watermarks ◆ Subscriptions & Terms • No charge during the Free Trial period. • Free trial automatically converts to a paid subscription unless canceled at least 24-hours before the end of the trial period. From that point onwards, the subscription automatically renews unless canceled at least 24-hours before the end of the current period. • The payment will be charged to your iTunes Account when you confirm the purchase. • The subscription automatically renews for the same price and duration period depend on the selected plan (monthly, half-annual or annual) unless canceled at least 24-hours before the end of the current period. • You can disable the automatic renewal function at any time by adjusting your account settings. • Any unused portion of a free trial period will be forfeited when the user purchases a subscription. Privacy Policy: https://app.termly.io/document/privacy-policy/18220ff3-f253-4b42-aae5-d013a9381061 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Subly

Create professional video captions, edit clips, and generate AI narration entirely on your device. This app prioritizes user privacy by keeping all footage local, offering advanced editing tools and multi-language support.

Highlights
  • Word-by-word animated captions
  • On-device editing and privacy
  • AI narrator with voice selection
  • Full video editing suite
  • B-roll and music integration
  • SRT/VTT subtitle export
  • Vertical video reframing
Features
Read full description

Caption, edit, and narrate short videos — all on your iPhone, all private. Start with a free trial. No credits that "run out." No account. Your video never leaves your device, so it even works in airplane mode. • WORD-BY-WORD CAPTIONS — animated, karaoke-style highlight with a live preview. • SUBLY PRO — no watermark, unlimited full-quality export. Yearly, weekly with a free trial, or a one-time lifetime unlock. • ON-DEVICE & PRIVATE — no servers, no uploads, no account. Cloud editors send your footage away and take broad rights to it; Subly never does. • FULL EDITOR — combine clips, split, trim, and reorder on a scrub timeline with frame-accurate preview. • TRANSITIONS — dissolve, fade to black, slide, and zoom between clips. • B-ROLL & MUSIC — drop video overlays and a music bed with auto-ducking and per-clip volume. • AI NARRATOR — type a script, pick a voice, get a natural voiceover generated entirely on your iPhone. Offline, unlimited, no per-character fees. • CAPTIONS FROM YOUR SCRIPT — one script becomes both the narrator audio and word-synced captions. • ENGLISH-FIRST, 90+ LANGUAGES — on-device Whisper transcription. • PRO FORMATS — export SRT and VTT subtitle files. • VERTICAL REFRAME — turn landscape clips into 9:16. Built for Reels, Shorts, and TikTok creators who want their footage to stay theirs. Subly Pro: a yearly subscription, a weekly subscription with a 3-day free trial, or a one-time lifetime unlock. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel them in Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://telegra.ph/Subly-Privacy-Policy-06-09

Screenshots

Auto Caption Video Subtitles4 screens
Subly4 screens

Verdict

The call

The clearest difference is ratings volume: Auto Caption Video Subtitles at 924 against Subly's 2. Auto Caption Video Subtitles also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Subly's advantage is review sentiment (100% vs 80%) and rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases 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. Auto Caption Video Subtitles sells 10 in-app purchases, starting at $0.99 per 7 days and Subly sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Subly holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Auto Caption Video Subtitles has 924 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 80% of Auto Caption Video Subtitles's written reviews are positive against 100% of Subly's.

UpkeepUpdate frequency

Auto Caption Video Subtitles ships an update every 6 days, Subly every 4 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Auto Caption Video Subtitles versus Subly: the parameters behind the verdict, then further details
ParameterAuto Caption Video SubtitlesSubly
PriceFreeFree
Rating4.8 (924 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings924 — better2
Update frequencyEvery 6 daysEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size314 MB95 MB
Age rating4+4+
DeveloperTake Agency, LLCNTSAUTOSIGA LLC

Customer experience

Auto Caption Video Subtitles

All ratings924 ratings
Positive94.9%
Neutral1.7%
Negative3.4%
Written reviews110 reviews
Positive80.0%
Neutral5.5%
Negative14.5%

Subly

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Auto Caption Video Subtitles

Reported bugs

2 issues
  • Crashes for longer videos
  • Captions in wrong languages

Requested features

4 requests
  • Undo/redo functionality
  • Longer video support
  • Add custom fonts
  • Freeform subtitle positioning

Subly

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Auto Caption Video Subtitles

Subscriptions10
  • Unlimited Saves3 Days trial$0.997 Days
  • Unlimited Auto Captions3 Days trial$2.997 Days
  • Unlimited Saves3 Days trial$2.991 Month
Show 7 more
  • Unlimited Saves7 Days trial$2.997 Days
  • Unlimited Saves$2.997 Days
  • Unlimited Auto Captions3 Days trial$3.997 Days
  • Unlimited Saves3 Days trial$4.997 Days
  • Unlimited Saves7 Days trial$9.991 Month
  • Unlimited Saves3 Days trial$9.991 Month
  • Unlimited Saves!3 Days trial$49.991 Year
3 purchases

Subly

Subscriptions2
  • Weekly3 Days trial$4.997 Days
  • Yearly$29.991 Year
One-time1
  • Subly Pro$39.99

Questions

Is Auto Caption Video Subtitles free?
Auto Caption Video Subtitles is free to download, with in-app purchases available.
Is Subly free?
Subly is free to download, with in-app purchases available.
Which has better reviews, Auto Caption Video Subtitles or Subly?
Subly is rated higher. Auto Caption Video Subtitles averages 4.8 out of 5 from 924 ratings, while Subly averages 5.0 from 2 ratings.
Do Auto Caption Video Subtitles or Subly have ads?
Neither Auto Caption Video Subtitles nor Subly shows ads.
Which is updated more often, Auto Caption Video Subtitles or Subly?
Auto Caption Video Subtitles ships an update every 6 days, and Subly every 4 days. Most recently, Auto Caption Video Subtitles was updated on November 7, 2026 and Subly on November 5, 2026.

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