CaptionSmith vs PostKit AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CaptionSmith
This app uses AI to generate professional captions, titles, and keywords for your photos. It offers various templates and features like GPS awareness and stock photography optimization. Metadata embedding and iCloud sync are also included.
- AI-powered caption generation
- 12 built-in caption templates
- Auto-generate smart keywords
- GPS-aware location captions
- Stock photography presets
- EXIF/IPTC metadata embedding
- iCloud sync across devices
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CaptionSmith turns the tedious work of captioning and keywording into a few taps. Point it at your photos, pick a style, and let AI write professional titles, descriptions, and keywords — then embed them straight into your image metadata, ready for stock agencies or your own searchable library. Built for stock photographers, and just as handy for everyday photos. WHAT IT DOES • AI captions & keywords — Claude, OpenAI (GPT), and Google Gemini analyze each photo and write accurate, natural descriptions plus 20–45 relevant keywords. • Stock Photography Mode — agency presets for Shutterstock, Adobe Stock, and Getty/iStock with the right keyword counts, title lengths, and editorial formatting. • Compare providers (new) — run one photo through Claude, GPT, and Gemini side by side and keep the caption and keywords you like best. • 13 caption templates — Descriptive, Concise, Stock Commercial, Stock Editorial, Product, Real Estate, Food, Travel, Portrait, Event, Artistic, Social, and a new Family & Everyday style. • People tagging — tag friends and family so their names appear in captions; on-device face detection helps you tag faster (no facial recognition, nothing stored). • Batch processing — caption 100+ photos at once with live progress. Minutes instead of hours. • Metadata embedding — writes to EXIF, IPTC, and XMP so captions are searchable everywhere and upload-ready; XMP sidecars for RAW/DNG. • Compliance tools — agency compliance checks, one-tap auto-fix, and AI-content disclosure for editorial. • GPS-aware captions — optional location context pulled from your photos. • Export to Photos, share anywhere, or import photos straight from other apps. TWO WAYS TO USE IT • Subscription — no API key required, with a free trial so you can try before you subscribe. • Bring your own key — power users can plug in their own Anthropic, OpenAI, or Google key. SUPPORTED PHOTOS JPEG, HEIC, PNG, and RAW/DNG (via XMP sidecar). PERFECT FOR • Stock contributors uploading to Shutterstock, Adobe Stock, Getty, and iStock. • Photographers who need consistent, agency-ready metadata in bulk. • Anyone building a searchable, well-captioned photo library. PRIVACY • Photos are sent only to the AI provider that captions them. • On-device face detection is used only to help you tag — there is no facial recognition, and no face data is ever stored or shared. • API keys are stored securely in the iOS Keychain. Requires iOS 17 or later. Subscriptions auto-renew unless cancelled; manage them anytime in your Apple account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
PostKit AI
This app helps creators generate platform-ready content using AI. It offers tools for creating captions, hooks, hashtags, carousels, and editing short videos with a timeline. Content can be exported for various social platforms.
- AI caption and hook generation
- Trend-inspired content prompts
- Carousel design with canvas editor
- Timeline video editing
- Export for social platforms
- Multi-language support
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PostKit AI is an all-in-one content studio for creators and teams. Create platform-ready content with AI. Generate captions, hooks, and hashtag ideas, explore trend-inspired prompts, design carousels with a built-in canvas editor, and edit short videos with a timeline. Add text, stickers, and styles, then export your content ready to share. Key Features - AI writing: ideas, captions, hooks, hashtag suggestions - Trend-inspired prompts to spark new content - Carousel (canvas) editor: templates, fonts, backgrounds, stickers - Photo and video tools: trim, resize, timeline editing, subtitles (if available) - Export formats for popular social platforms - Multi-language support Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy URL: https://postkitapp.com/privacy/ Terms of Use URL: https://postkitapp.com/terms/
Screenshots
Verdict
The clearest difference is device support: CaptionSmith at 3 against PostKit AI's 1. On price, rating, ratings volume and update cadence 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. CaptionSmith sells 9 in-app purchases, starting at $2.99 per month and PostKit AI sells 7 in-app purchases, starting at $6.99 per 7 days. 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 CaptionSmith against 5.0 for PostKit AI. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
CaptionSmith ships an update every 5 days, PostKit AI every 6 days. The most recent releases landed on September 22, 2026 and September 1, 2026 respectively.
| Parameter | CaptionSmith | PostKit AI |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 5 days — better | Every 6 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 22 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Arhaanth Reddy | Lovesoft Yazilim |
Customer experience
CaptionSmith
PostKit AI
In-app purchases
CaptionSmith
- 50 Captions1 Month trial$2.991 Month
- 200 Captions1 Month trial$6.991 Month
- Unlimited Plan1 Month trial$19.991 Month
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- 200 Captions1 Year trial$69.991 Year
- BYOK Annual1 Year trial$99.991 Year
- Unlimited Captions1 Year trial$199.991 Year
- Unlimited Captions$74.99
- Lifetime - Mac$74.99
- Lifetime - All Devices$99.99
PostKit AI
- PostKit Weekly$6.997 Days
- PostKit Monthly$19.991 Month
- PostKit Yearly$149.991 Year
- 25 Credits Pack$19.99
- 100 Credits$29.99
- 250 Credits$39.99
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- 600 Credits Pack$79.99





