CaptionLab vs SubTitler
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
CaptionLab
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CaptionLab β AI Caption Generator Create unlimited AI captions tailored to your photos, videos, vibe, and style β 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 CaptionLabβyour creative assistant turning Instagram posts into standout moments. The world is waiting for your content! Available for iPhone (iOS 15+). No account needed β start creating in seconds. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
SubTitler
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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
Verdict
The clearest difference is ads: SubTitler at none against CaptionLab's shown. CaptionLab's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
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.
CaptionLab ships an update fortnightly, SubTitler every 3 weeks. The most recent releases landed on September 23, 2026 and September 5, 2026 respectively.
| Parameter | CaptionLab | SubTitler |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly β better | Every 3 weeks |
| Ads | Yes | No β better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 β better | 17.0 |
| Further details β not scored | ||
| Size | 13 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmytro Hryshanin | Ryusei Mogi |
In-app purchases
CaptionLab
- Premium Plan$0.991 Month
SubTitler
- SubTitler Monthly Plan14 Days trial$2.991 Month
Questions
Is CaptionLab free?
Is SubTitler free?
Do CaptionLab or SubTitler have ads?
Which is updated more often, CaptionLab or SubTitler?
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