Chuck vs Klara
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chuck
This app offers a fast and private way to manage your inbox. It uses on-device AI to help you clean up thousands of emails, unsubscribe from lists, and organize your communications across multiple accounts. It functions as a full email client with smart notifications.
- AI-powered batch email processing
- Bulk delete, archive, and unsubscribe
- Connect multiple email accounts
- On-device AI for privacy
- Full email client functionality
- Smart notifications
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Chuck is email with superpowers. Clean up thousands of emails in seconds. Swipe through batches, bulk delete, archive, and unsubscribe — all processed privately on your device. Unlike other email apps, Chuck never reads your email content. Our on-device AI analyzes only metadata (senders, subjects, timestamps) to intelligently group and suggest what to clean up. Your emails stay on your phone, never on our servers. ALL YOUR ACCOUNTS IN ONE PLACE Connect Gmail, Outlook, Yahoo, iCloud, AOL, Microsoft 365, Fastmail, and any standard IMAP account. See all your inboxes in one unified view and clean them all at once. AI-POWERED BATCH PROCESSING • Swipe left or right to delete or archive hundreds of emails at once • AI Select suggests messages you can safely remove, trained privately on your device • Group by Sender, Subject, or Time to find and act on email in bulk • Filter by contact, attachments, starred, unread, and more UNSUBSCRIBE & DECLUTTER • Unsubscribe from mailing lists with one tap • Mark as Spam, Snooze, or Move to folders and labels • Star, flag, and organize across all your accounts FULL EMAIL CLIENT Chuck isn't just a cleanup tool — it's your everyday email app. Read, reply, compose, and manage email across all your accounts with a clean, fast interface. Use it alongside Apple Mail or as your primary client. SMART NOTIFICATIONS Get notified about the emails that matter. Chuck learns your priorities and filters out the noise, so you only see what's important. FREE & PRO Use Chuck free with a generous daily email cleanup quota. Upgrade to Chuck Pro for unlimited processing, multiple accounts, AI filters, advanced sorting, custom signatures, and more. If you're enjoying Chuck, please leave a review — it really helps! A big thank you to everyone who has left a five star review :) About Subscription billing: • If you choose to upgrade (optional), your iTunes account will be charged as soon as you confirm the purchase. Chuck Pro subscription is billed monthly or yearly. • Your subscription will automatically renew after 1 month or 1 year, unless auto-renew is turned off at least 24-hours before the end of the current subscription period. • You can manage your subscription and turn-off auto-renewal by going to your Apple ID Account Settings any time after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Help/Questions? Email us at support@chuck.email Privacy Policy: https://chuck.email/privacy Terms of Use: https://chuck.email/terms
Klara
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See time disappear. Stay focused. Klara is a visual focus timer designed for adults with ADHD, time blindness, and anyone who wants a simpler way to focus. Not a planner. Not a habit tracker. Just a focused, visual way to make time easier to understand. Open the app. Choose your time. Tap start. Watch the circle shrink. No complicated setup, no distractions. SEE TIME DIFFERENTLY Instead of relying only on numbers, Klara turns time into visual movement. Watch the circle shrink or the progress bar move as your focus session gets closer to completion. TRACK YOUR FOCUS Klara keeps a simple history of your completed focus sessions. See your activity over the last 12 weeks, weekly focus time, recent sessions, and how you spend your focus time across different activities. Choose between Study, Work, Read, Meditate, or Other when starting a session — or simply press Start Focus and get going. FEATURES Visual countdown with circle or progress bar Quick start focus sessions Custom timers from 1–180 minutes Focus categories for Study, Work, Read, Meditate, and more Activity Map showing your completed focus sessions Weekly focus statistics and activity breakdowns Recent focus session history Multiple calm color themes Gentle vibration and sound when your timer completes All activity data stored locally on your device No account required No subscription No ads Pay once. Use forever. Klara keeps focus simple. Start a timer, focus on what matters, and see your progress over time.
Screenshots
Verdict
The clearest difference is price: Chuck at Free against Klara's $2.99. Chuck also leads on update cadence (weekly vs every 2 months). Klara's advantage is in-app purchases (none vs 10) and ads (none vs shown). On device support and iOS requirement 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
Chuck is free to download; Klara costs $2.99 up front. Chuck sells 10 in-app purchases, starting at $3.99 per month. Klara asks for nothing beyond the download.
Chuck ships an update weekly, Klara every 2 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.
| Parameter | Chuck | Klara |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.8 (15K ratings) — better | — |
| Positive reviews | 58.4% of reviews | — |
| Number of ratings | 15K — better | — |
| Update frequency | Weekly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 95 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | 410 Labs | Julio Siklander |
Bugs and requests
Chuck
Reported bugs
3 issues- Inability to connect to certain email providers
- Emails disappearing or not properly deleted
- Inconsistent behavior when managing multiple accounts
Requested features
5 requests- Ability to view and manage email folders
- Customizable email sorting and filtering options
- Improved search and retrieval of past emails
- Drafts and email composition capabilities
- Syncing and backup across devices
Klara
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Chuck
- Chuck Pro (Monthly)7 Days trial$3.991 Month
- Chuck Pro Monthly7 Days trial$4.991 Month
- Chuck Pro (Monthly)$5.991 Month
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- Chuck Pro Monthly$6.991 Month
- Chuck Pro (Monthly)$8.991 Month
- Chuck Pro (Annual)7 Days trial$39.991 Year
- Chuck Pro Annual7 Days trial$49.991 Year
- Chuck Pro Annual7 Days trial$59.991 Year
- Chuck Pro Yearly$69.991 Year
- Chuck Pro (Yearly)$89.991 Year
Klara
No in-app purchases









