Comparison

CaptionLab vs SubTitler

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

Head to head
About

CaptionLab

Instantly generate unlimited AI-powered captions for your photos and videos. Choose from various styles, tones, and lengths to enhance your social media content and captivate your audience. Available in over 25 languages.

Highlights
  • Unlimited AI captions
  • Customizable style, tone, and length
  • Multilingual support (25+ languages)
  • Ad-free premium experience
  • No account required
  • Instant caption generation
Features
Read full description

CaptionLab — AI Caption Generator Create unlimited AI captions tailored to your photos, videos, vibe, and style — instantly. CaptionLab delivers perfect captions in seconds. Struggling to find the perfect words for your stunning photos or videos? CaptionLab has the solution! A well-crafted caption helps you stand out, captivate followers, and grow your audience. Why CaptionLab? Unlimited Captions for photos and videos with no daily limits Choose style, tone, and length (Premium): from witty to deep, short to long Multilingual Support: English, Russian, Spanish, and 22+ more languages! Ad-free with the Premium plan Upgrade to Premium for custom tones, styles, and an ad-free experience! Craft like a pro with CaptionLab—your creative assistant turning Instagram posts into standout moments. The world is waiting for your content! Available for iPhone (iOS 15+). No account needed — start creating in seconds. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

SubTitler

Features
Read full description

SubTitler is an automatic caption app for adding burned-in subtitles and captions to one selected video. Choose a video and SubTitler transcribes the audio on iPhone, places readable captions on the video, and saves a new MP4 while leaving the original untouched. Speech language detection is automatic by default. If detection is not a good fit, choose a language from the in-app searchable list before transcription. Useful for - Adding captions before posting to social apps - Making spoken videos easier to watch - Creating captioned videos without typing every line by hand Main features - Choose one video and create captions automatically - Burn captions into the exported video - Preserve the video's orientation and aspect ratio - Save the generated video to Photos - Run transcription and export on device - Use automatic speech language detection or choose a language - Correct frequently misheard names, brands, and specialist terms All features are available for free. There is no paywall, subscription, or in-app purchase flow. SubTitler does not include multi-video joining, automatic cutting, BGM, or manual timeline editing. Terms of Use: https://kyodo.mo-gmo.com/en/terms/ Privacy Policy: https://kyodo.mo-gmo.com/en/privacy-policy/

Screenshots

CaptionLab4 screens
SubTitler4 screens

Verdict

The call

The clearest difference is ads: SubTitler at none against CaptionLab's shown. CaptionLab's advantage is update cadence (fortnightly vs every 5 weeks) and iOS requirement (15.6 vs 17.0). On price, in-app purchases 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. CaptionLab sells 1 in-app purchase, starting at $0.99 per month and SubTitler sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CaptionLab ships an update fortnightly, SubTitler every 5 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
CaptionLab versus SubTitler: the parameters behind the verdict, then further details
ParameterCaptionLabSubTitler
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyFortnightly — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size13 MB5 MB
Age rating4+4+
DeveloperDmytro HryshaninRyusei Mogi

In-app purchases

1 purchases

CaptionLab

Subscriptions1
  • Premium Plan$0.991 Month
1 purchases

SubTitler

Subscriptions1
  • SubTitler Monthly Plan14 Days trial$2.991 Month

Questions

Is CaptionLab free?
CaptionLab is free to download, with in-app purchases available.
Is SubTitler free?
SubTitler is free to download, with in-app purchases available.
Do CaptionLab or SubTitler have ads?
CaptionLab shows ads; SubTitler does not.
Which is updated more often, CaptionLab or SubTitler?
CaptionLab ships an update fortnightly, and SubTitler every 5 weeks. Most recently, CaptionLab was updated on October 30, 2026 and SubTitler on October 31, 2026.

Other comparisons