Comparison

Cardinal vs shells screen time controls

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

Head to head
About

Cardinal

Effortlessly manage your gift cards with smart scanning, a digital wallet, and timely expiration alerts. Track balances and ensure you never waste a gift card again.

Highlights
  • Smart OCR scanning for automatic data extraction
  • Digital wallet for all gift cards
  • Customizable expiration alerts
  • Real-time balance tracking
  • Bank-level security with AES-256 encryption
  • Offline access to cards
Features
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Never Lose a Gift Card Again Americans waste $27 billion in unused gift cards every year. Cardinal makes sure you're not one of them. Cardinal is the beautiful way to manage your gift cards. Track balances, get smart alerts, and never waste money again. KEY FEATURES - Smart OCR Scanning Snap a photo and AI instantly extracts all card details. No manual typing required. - Digital Wallet All your cards in one beautiful place with scannable barcodes for instant in-store use. - Expiration Alerts Get notified before cards expire. Customize reminders for 30, 14, 7, or 1 day before. - Balance Tracking See your total gift card value at a glance and track which cards need attention. - Bank-Level Security End-to-end encryption keeps your card details safe. Your data is always protected with AES-256 encryption. WHY CARDINAL? - Up to 10 gift cards with all essential features - Beautiful, intuitive design that feels like Apple Wallet - Works with gift cards from any retailer - Offline access to your cards - Export your data anytime THE PROBLEM WE SOLVE $308 billion in gift cards are sold every year, but 10% ($27B) goes unused. Don't let your gift cards expire or get lost in a drawer. Cardinal keeps everything organized in one secure place. PERFECT FOR - Anyone who receives gift cards for birthdays, holidays, or rewards - People who forget to use their gift cards before they expire - Shoppers who want to maximize their gift card value - Families managing multiple gift cards Download Cardinal today and start saving money. Free to start, no credit card required. Terms of Service: https://www.usecardinal.app/terms.html

About

shells screen time controls

Features
Read full description

Take some of your hours back. Shells shows you where your phone time really goes, then helps you use it a little less. It gives you the whole range, from a gentle nudge to a short pause to a firm block, so you can start gentle and only go firmer for the apps that keep pulling you in. LIGHT: GENTLE NUDGES, NOTHING BLOCKED • Soft Nudges: a Volume Warning at 90% of your daily goal, Usage Milestones as your day adds up, a Daily Check-in Reminder for your streak, and Reach Alerts when you keep reaching for a paused or blocked app. MEDIUM: A SHORT PAUSE BEFORE AN APP OPENS • Mindful Pauses (iOS 26 or later): a Shortcuts automation brings up a calm 15 second breath when you open a chosen app, then you pick how long you'd like it for. Its notifications still come through. • Mindful Pauses + No Notifications: the Screen Time version. The app stays behind a shield between pauses, which can also keep its notifications out of the way. • Exercise Unlock: a few squats or a plank first, counted on your iPhone by the camera. • Steps Unlock: a short walk first. • Quick Session: an optional 20 second pass for a quick reply. STRICT: APPS STAY CLOSED WHEN YOU NEED THEM TO • Morning Block: keep your phone down first thing, apart from the essentials you pick. • App Limits: a daily allowance. Once it's used up, the app stays blocked until tomorrow, with 5 minutes of Emergency access if you really need it. • Scheduled Blocks: close apps at set times, like 9 to 5 on weekdays. • Location Blocks: block apps at the places you choose, or allow them only there. • NFC Locks: apps stay locked until you tap your own NFC sticker. AND A FEW EXTRAS • Holiday Mode: pause or relax any control while you're away. Everything switches back on by itself after the last day you pick. • Focus Sessions: block apps for a set time, with a Lock Screen countdown. • Calm browsing: open Instagram, YouTube, X, TikTok, Facebook and Reddit inside Shells with the parts you choose hidden, like the feed, Reels or Shorts. • Widgets: time left today, trends, the apps you choose, and one-tap Focus Sessions. SEE YOUR DAY CLEARLY • Three rings for productivity, screen time and a daily health score. • An hour by hour chart, pickups, a 30-day heatmap and a closer look at any app. • If you like, a timeline of the places where you use your phone most. YOUR DATA Your screen time, places and location history stay on your iPhone. What goes online: your optional Sign in with Apple account, referrals and feedback (Supabase), Pro status (RevenueCat), and product analytics with a device ID and your account ID (Statsig), never your screen time or location. Turn on iCloud backup and your settings, check-in notes, places and recent location history go to your own iCloud. We never sell your data. SHELLS AND PRO Each app you pause, each limit or block, each NFC Lock group and each Calm browsing site uses a Shell. Everyone starts with 1, and inviting friends earns up to 2 more. A free account adds basic Insights. Shells Pro gives you unlimited Shells, so every control runs at once, plus every Insights card. Widgets and Holiday Mode are free, and every control works on the free plan using your Shells. Pro comes as Monthly, Annual or Lifetime (one-time purchase). Annual and Lifetime have launch pricing, and new Monthly and Annual subscribers get a 1-month free trial (eligibility applies), until 31 December 2026 unless changed or extended. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends; manage them in your App Store account settings. WHAT YOU NEED iOS 18 or later, Screen Time access and notifications (the Screen Time pause opens from a notification). Mindful Pauses via Shortcuts need iOS 26 or later. Location, Motion, Camera and NFC are optional. Privacy Policy: https://consciousscreentime.netlify.app/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Cardinal3 screens
shells screen time controls4 screens

Verdict

The call

Cardinal and shells screen time controls are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Cardinal sells 2 in-app purchases, starting at $2.99 per month and shells screen time controls sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Cardinal versus shells screen time controls: the parameters behind the verdict, then further details
ParameterCardinalshells screen time controls
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequency—Every 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS18.018.0
Further details — not scored
Size75 MB99 MB
Age rating4+4+
DeveloperLindsay SchraderAndi Yao

In-app purchases

2 purchases

Cardinal

Subscriptions2
  • Premium Membership$2.991 Month
  • Premium Yearly$24.991 Year
3 purchases

shells screen time controls

Subscriptions2
  • Pro Monthly1 Month trial$4.991 Month
  • Pro Annual1 Month trial$29.991 Year
One-time1
  • Pro Lifetime$49.99

Questions

Is Cardinal free?
Cardinal is free to download, with in-app purchases available.
Is shells screen time controls free?
shells screen time controls is free to download, with in-app purchases available.
Do Cardinal or shells screen time controls have ads?
Neither Cardinal nor shells screen time controls shows ads.

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