CaptionStudio vs Sundial Time Marks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CaptionStudio
This app transforms audio and video into editable, translatable, and exportable timed captions. It also offers features for meeting notes, live floating captions, and conversation translation, all processed and stored locally on your device for enhanced privacy.
- Audio and video caption generation
- Caption translation and editing
- Meeting note transcription and organization
- Live floating captions for apps
- On-device conversation translation
- Multiple export formats (SRT, WebVTT, TXT, MP4)
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Turn audio and video into editable, translatable, export-ready timed captions—and keep meetings and conversations on your device. CaptionStudio brings media captions, meeting notes, floating captions, and conversation translation into one app. No account is required. Media, recordings, captions, and saved translation history are processed and stored on device by default. AUDIO & VIDEO CAPTIONS • Import MOV, MP4, M4V, M4A, MP3, WAV, or AAC files, or choose a video from Photos • Generate timed captions with native speech recognition • Play, seek, correct, split, merge, and add captions on a visual timeline • Translate captions and edit original, translated, or bilingual text • Customize fonts, size, colors, outline, background, and position • Export SRT, WebVTT, or TXT, or burn captions into an MP4 video MEETING NOTES • Record audio while creating a transcript • Organize the transcript into an overview, key points, decisions, and action items • Replay the recording and edit every section • Export meeting notes with the transcript as Markdown FLOATING CAPTIONS • Use iOS system broadcasting to transcribe audio from supported apps • Follow live captions in Picture in Picture • Show original, translated, or bilingual captions • Customize window ratio, text size, lines, alignment, colors, and background • DRM, broadcast, and audio-source restrictions may prevent some content from being transcribed CONVERSATION TRANSLATION • Speak a phrase, translate it, and hear it aloud • Swap source and target languages • Keep conversation history on device and delete it at any time PRIVACY FIRST • No account, ads, or developer-operated cloud upload • No third-party analytics or advertising SDKs • iOS manages required language resources; some models may need to be downloaded before first use • Recognition, translation, and language availability depend on the device, system version, and available models New users receive a 7-day full-feature trial on first launch. After the trial, choose a one-year access purchase that does not auto-renew or a lifetime unlock. Purchases and refunds are handled by Apple. Speech recognition, translation, and generated notes can be affected by accents, noise, overlapping speakers, and system models. Review important content against the original recording or video.
Sundial Time Marks
Visualize your progress through natural cycles like days, weeks, years, and your lifetime with customizable widgets. See where you stand at a glance with visual marks representing past, present, and future. Your data remains private and synced across devices.
- Visualize time across natural cycles
- Home Screen and Lock Screen widgets
- Lifetime progress visualization
- Customizable styles and palettes
- Private iCloud synchronization
- Monthly year-progress notifications
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INSPIRATION The sundial is an ancient instrument for telling the time. It made invisible time visible. Nobody uses one anymore. Sundial sets out to do the same, in a way made for today: it draws time again with shapes, colours and progress. THE NAME The Chinese name, 岁时, comes from Jingchu Suishi Ji, written by Zong Lin in sixth-century China. The book follows the year from New Year's Day to New Year's Eve, and in its pages a year is not 365 identical days but a sequence of named stretches of time. The app does the same: it cuts continuous time into pieces and lays them out in front of you. The English name, Sundial, is that ancient instrument for telling the time. TIME YOU CAN SEE Every stretch of time is drawn as a row of marks: behind you in ink, right now in a single vermilion stroke, still ahead in light grey. No need to open the app. Glance at your Home Screen and you know where you stand. · Seven cycles: today, this week, this month, this quarter, this year, the lunar year and your lifetime · Countdown: from a start date to a target date, see what is left · Count up: from a date in the past, see how far you have come · Overview: today, this week, this month and this year side by side · Lifetime: enter your birthday and a life expectancy, and your life becomes a grid of marks, drawn exactly like your day. Where you are in the day and where you are in your life line up at a glance WHERE YOU LOOK EVERY DAY · Home Screen widgets in small, medium and large, plus extra large on iPad · Lock Screen widgets in circular and rectangular, so a countdown can sit right on your Lock Screen · Full iPad support in both orientations 29 STYLES, 57 PALETTES Bars, thin bars, capsules, stairs, dots, dot matrix, ring, tick ring, ink ring, hexagons, timeline, neon, and motifs from Chinese ink painting: pine, bamboo, plum, leaf, mountains, clover, moon phase and seal. From a single hairline to a small painting, all in the same paper and ink language. Palettes come in Universal, Chinese, Night, Material and Contrast, or build your own from any background and accent colour. Over twenty typefaces, and the figures follow them: stroke weight and line ends match the character of the font. FULL SCREEN AND SHARING Open any item for a full screen view: this year as 365 dots, one for each day, or this month as a calendar of dots. Share any of them as an image. YEAR PROGRESS ON THE FIRST OF EACH MONTH At 9 AM on the first of each month, a silent notification with a card of the year so far. Check this year's progress in Settings any time, share it, or turn the reminder off. YOUR DATA STAYS YOURS Everything is stored on your device and in your own private iCloud database. The developer never sees it and collects nothing. With iCloud sync on, switch phones or reinstall and your widgets are still there. Sync can be turned off at any time. FREE AND PRO The free version lets you create three widgets with the basic styles and every palette. Sundial Pro removes the limit and unlocks every style and iCloud sync, on iPhone, iPad and Mac. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ratings volume: CaptionStudio at 3 against Sundial Time Marks's 1. Sundial Time Marks's advantage is iOS requirement (17.0 vs 26.0). On price, rating, review sentiment and ads 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
Both are free to download. CaptionStudio sells 1 one-off in-app purchase and Sundial Time Marks sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for CaptionStudio against 5.0 for Sundial Time Marks. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews are what separate them: 100% of CaptionStudio's written reviews are positive against 92% of Sundial Time Marks's.
| Parameter | CaptionStudio | Sundial Time Marks |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 92.3% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | — | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | 夏骏 倪 | 婉 唐 |
Customer experience
CaptionStudio
Sundial Time Marks
In-app purchases
CaptionStudio
- 永久会员$1.99
Sundial Time Marks
- Sundial Pro Monthly$0.991 Month
- Sundial Pro Yearly$6.991 Year
- Sundial Pro Lifetime$9.99









