Coday vs Device Kit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Coday
Track the cost of your belongings over time, including daily expenses, cost per use, consumables, and subscriptions. Get reminders for renewals, expiring warranties, and restocking needs. AI capture helps log items quickly with detailed insights.
- Cost per day tracking
- Cost per use calculation
- Consumable stock management
- Subscription renewal reminders
- AI item capture from screenshots
- Customizable notifications
- Cross-device synchronization
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Coday keeps track of what you own, with four things in one app: cost per day, cost per use, consumables, and subscriptions. See what each thing costs you every day and every use, keep stock of consumables and know when they'll run out, and log every subscription charge with a reminder before it renews. You'll also hear when a warranty or shelf life is about to end, or when something pays off. Every day, every use, accounted for Track one-time purchases, per-use costs, subscriptions, and consumables. See what each item costs per day, per use, or per unit, record how often you use it, and keep track of quantities used. Costs are based on what you actually spent: money from selling an item is deducted, and paused days don't count. A $999 phone used for two years comes to about $1.37 a day. Clothes and shoes work the same way, for cost per wear. Extra costs like accessories, fuel, or vet bills, and recurring costs like car insurance or vaccinations, are spread into the item's average too. Any currency, one total Give each item its own currency. Totals convert to your main currency, with every payment converted at that day's exchange rate. Consumables and stock, before you run out Track stock and what you paid for each restock to get the cost per unit. Coday estimates when you'll run out based on recent use and reminds you to restock. For parts that wear out, like toothbrush heads, filters, or racket strings, it tracks what's left and works out when to replace them, by time or by number of uses. Subscription tracker, no surprise renewals Log each period's price, the billing cycle, and any free trial, and keep tracking when the price changes. Get reminded before a renewal or before a free trial ends, and see what each subscription costs you per day. AI Capture: hand Coday an order screenshot AI reads the name, price, date, and currency, and finds a matching icon, so the item is logged in one go. Sign in for 1 free capture a day, or 20 a day with Premium. 10,000+ beautifully crafted 3D icons From electronics to everyday essentials, find an icon that fits each item, and AI gives every item card a harmonious color. Know when it renews, runs out, or pays off Get notified when an item reaches your target average cost, before a subscription renews, or when it is time to restock everyday essentials. Warranty, shelf life, return windows, and price protection get a heads-up 7 days ahead by default. Regular care like servicing or vaccinations, duration goals like wearing a coat for three years, and custom dates like a contract ending are covered too, and items can retire automatically when they expire or run out. A glance at your Home Screen See each item's daily cost and progress without opening the app, and check your total spending with the stats widget. Premium adds rotating and pinned item widgets. Pick up on any device With Premium, your records stay in sync across your devices. Log it on your phone, pick it up on your tablet. Wishlist and dashboard Put things you want on your wishlist, wait a few days before deciding, and see how much you saved on what you let go. The dashboard on the You tab brings this month's spending, reminders, your wishlist, consumables, and subscriptions together, with a timeline to look back on. Custom fields hold anything else you care about, like the model or where it's kept. Free to use, no account needed Free to download, with unlimited items. Logging, cost per use, reminders, and icons are all free, and you can use Coday without signing in: your data stays on your device by default. Premium adds sync across devices, rotating and pinned widgets, 20 AI Captures a day, no ads, and more views and colors. Everything you own deserves the rest of its story. [Terms of Use] https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Device Kit
Monitor your device's core health in real-time, including CPU temperature, usage, network speed, and battery status. Access a suite of practical tools and utilize dynamic island and floating widgets for at-a-glance information.
- Real-time CPU temperature and usage monitoring
- Network speed and data usage tracking
- Comprehensive battery status insights
- Dynamic Island and floating widgets
- Charging power detection and statistics
- 18 practical system, network, and sensor tools
- Home and lock screen widgets
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Device Kit — Your iPhone's All-in-One Health Checker, Take Full Control of Your Device in Real Time! Ever wonder how hot your phone really is? How fast is it charging? Is your CPU about to max out? Is your network being throttled? Device Kit gives you the most intuitive, real-time, and comprehensive answers. ▸▸ Core Monitoring at a Glance ◂◂ CPU Temperature — Real-time device temperature with smart estimates for battery and body temperature. 6-level thermal warning system alerts you before your phone overheats. CPU Usage — Real-time CPU utilization monitoring with user/system/idle breakdowns, plus historical trend charts to track load changes. Network Speed — Real-time speed for both Wi-Fi and cellular networks. Monitor upload/download speeds, peak speeds, and daily data usage stats. Battery Status — Charge level, charging state, low-power mode, thermal status — full battery health insights. Memory & Storage — Used/total capacity with breakdowns, storage usage percentage — say goodbye to storage anxiety. ▸▸ Dynamic Island & Floating Widgets — Desktop Monitoring ◂◂ Dynamic Island Live Monitor — No need to open the app. While your phone is locked or you're using other apps, the Dynamic Island shows real-time CPU temperature, network speed, and CPU usage with live updates. Picture-in-Picture Floating Widget — A persistent floating window on your home screen monitors network speed, temperature, and CPU. Drag it anywhere, use it while doing other tasks — true desktop-level monitoring experience. Motion Tracker on Dynamic Island — While recording motion trajectory, the Dynamic Island displays real-time distance, duration, and speed. ▸▸ Charging Power Detection ◂◂ Real-time Power Estimation — Detects charging power (W) in real time, telling you whether it's slow charging, standard charging, or fast charging. Charging Speed Rating — Slow / Standard / Fast / Ultra — clear at a glance. Charging Statistics — Duration, peak power, and total energy charged — a complete charging report. History Log — Every charging session is automatically saved for later review and comparison. ▸▸ 18 Practical Tools ◂◂ 【System Tools】 Flashlight (9 blink modes with brightness adjustment), Haptic Feedback, Multi-Touch Test, Motion Tracker 【Network Tools】 Ping, Telnet, SSH (Pro) 【Utility Tools】 QR Code Generator, Decibel Meter, Password Generator 【Sensor Tools】 Compass, GPS, Gyroscope, Magnetometer, Barometer, Altimeter, Proximity Sensor 【Display Tools】 Color & Brightness Adjustment 【Environment Tools】 Weather (Pro) ▸▸ Home Screen Widgets ◂◂ Home Screen Widgets — Uptime, Weather, CPU, Temperature, Memory, Storage, Clock, Device Info, Quick Actions. Available in Small, Medium, and Large sizes. Lock Screen Widgets — Weather, Storage, Uptime — check key info without unlocking. 【Auto-Renewable Subscription Terms】 Pro membership is an auto-renewing subscription billed monthly or yearly. Payment will be charged to your Apple ID account upon confirmation of purchase. The subscription will automatically renew within 24 hours prior to the end of the current period unless auto-renew is turned off at least 24 hours before the end of the current period. To cancel, please turn off auto-renewal in Settings > Apple ID > Subscriptions at least 24 hours before the current period ends. You can manage or cancel your subscription anytime after purchase in your account settings. Any unused portion of a free trial period (if offered) will be forfeited when you purchase a subscription. 【Privacy Policy & Terms of Service】 Privacy Policy: https://device-kit.pages.dev/private Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download Device Kit and keep your device under your complete control!
Screenshots
Verdict
The clearest difference is ratings volume: Device Kit at 94 against Coday's 2. Coday's advantage is review sentiment (92% vs 78%) and device support (4 vs 2). On price, rating, update cadence 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. Coday sells 3 in-app purchases, starting at $2.99 per month and Device Kit sells 4 in-app purchases, starting at $3.99 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 Coday against 4.9 for Device Kit. That said, the two scores are not equally well evidenced: Device Kit has 94 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 92% of Coday's written reviews are positive against 78% of Device Kit's.
Coday ships an update weekly, Device Kit every 10 days. The most recent releases landed on November 5, 2026 and November 7, 2026 respectively.
| Parameter | Coday | Device Kit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.9 (94 ratings) |
| Positive reviews | 92.0% of reviews — better | 78.2% of reviews |
| Number of ratings | 2 | 94 — better |
| Update frequency | Weekly — better | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 65 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | 晓明 陈 | Shuyang Fan Ziyang Software Development Studio (Individually Owned Business) |
Customer experience
Coday
Device Kit
In-app purchases
Coday
- Monthly sub$2.991 Month
- Annual sub$12.991 Year
- Lifetime$29.99
Device Kit
- Monthly subscription$3.991 Month
- Yearly subscription$7.991 Year
- Lifetime Membership$12.99
- Lifetime Membership$14.99









