Comparison

Sharp Kitchen vs Combustion Inc.

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

Head to head
About

Sharp Kitchen

Control your Sharp Microwave Drawer remotely via WiFi. Send cook commands, access smart cooking settings, and receive notifications. Save favorite recipes for quick access and discover helpful content.

Highlights
  • Remote control operation
  • Send cook commands
  • Smart cook settings
  • Manual cooking control
  • Save favorite recipes
  • Push notifications
Features
Read full description

The Sharp Kitchen app makes operating your Sharp Microwave Drawer or Sharp Convection Microwave Drawer easier than ever. Unlock the WiFi enabled features of your Microwave Drawer by connecting to your home network to enable remote control operation of common features, send cook commands to the oven and receive push notifications to your mobile device. Use the Sharp Kitchen app to access all Smart Cook settings for microwave and convection cooking, as well as manual cooking control. Save your favorite and most used menu items to the Favorites section to save you time. The Sharp Kitchen app also keeps you connected with our Spotlight section – your source for Helpful Hints, Inspired Innovations, and new content from our vibrant, online community at Simply Better Living (sbl.sharpusa.com). Main features: - Remote Control: Easily send a cook command to your microwave drawer with Sharp Kitchen. - Easy Open: Press the Open Drawer button to access the inside of your microwave without touching the oven control panel. - Favorites: Access your most used menu items by saving them as a “favorite”, saving you time and effort. - Push Notifications: The app lets you know your cook cycle has been completed by sending a notification to you phone, so you can spend more time with your family, not in the kitchen.

About

Combustion Inc.

Monitor and graph real-time food temperatures during cooking. Predict exactly when your meal will be ready using advanced sensor data and a predictive engine. Receive alerts for key cooking events and ensure food safety.

Highlights
  • Real-time core, surface, and ambient temperature graphing
  • Predictive engine for exact 'ready' time estimation
  • Advanced alerts for cooking events
  • Food safety parameter setting
  • Firmware updates for accessories
  • Cloud connectivity for remote monitoring
  • Live Activity and Apple Watch support
Features
Read full description

See (and graph!) exact temperatures throughout your food while it cooks. Know exactly when it will be done. View and graph core, surface, and ambient temps in real time. The wireless Predictive Thermometer was built to answer a simple but important question: when will my food be ready? Combustion’s Predictive Engine™ estimates exactly when that will be, using the data from 8 onboard sensors (the most of any cooking thermometer). Important firmware updates! The Combustion App includes the latest firmware updates for Predictive Thermometers and other Combustion Accessories including Boosters, Displays, Giant Grill Gauges and other forthcoming products. Firmware updates improve core functions including time-to-cook predictions, longer battery life, and can add new features. MeatNet™ Cloud – for functionally unlimited range! Use with WiFi Accessories or with a second mobile device to stream your cook data to the cloud. Watch your cook in real-time from anywhere with internet access. Live Activity/Apple Watch support. The Combustion App works with iOS as well as iPadOS and MacOS (M1 or newer). Includes Live Activity (Dynamic Island) display feature so you can watch key temps even when the app is in the background. So handy! Combustion App Features: – Set target temp: so that your food comes out just the way you want it – See predictions in relative time (“ready in” countdown) or in absolute “clock” time – See key temps in real-time: including TrueCore®, TrueSurface™, TrueAmbient™ – Get notifications for important cooking events with advanced alerts (ready alarm, 5-minute warning, disconnect alert, low battery notification) – Set SafeCook™ parameters (integrated food-safety) – Know exactly when your food is safe to eat – Set-up WiFi connectivity for Combustion WiFi accessories – Graph your food’s temperatures in real-time! – See (and graph) temperatures from all 8 sensors with Advanced Cooking Mode – Enables multi-node MeatNet™: use any combination of Combustion accessories to extend Bluetooth signal range + strength – Use with or without Combustion Display – Export cooking data - to fine-tune your technique – Update firmware: get better performance and new features for Combustion tools – Works with most cooking appliances and cookware types – Works with all kinds of foods and most cooking appliances - BBQ smokers, ovens, ranges, grills, and more - indoors and out. – Works with or without WiFi Get more consistent results with all your favorite foods: steak, pork chops, brisket, pork shoulder, roasts, turkey, whole chicken, ribs, fish, bread, and more. Advanced graphing on the Combustion App helps you visualize exactly how heat moves through your food. You will understand the relationship between ambient cook temps and surface temps. And how surface temps really control how long things take – and how evenly food cooks. It may shock you to find out the oven temp (or grill temp) you set is not the same as the food is actually experiencing! The Combustion Inc app puts all that knowledge in front of you – with instant feedback, so you’re not just cooking better, you’re also learning as you go. And learning has never been so delicious.

Screenshots

Sharp Kitchen4 screens
Combustion Inc.4 screens

Verdict

The call

The clearest difference is review sentiment: Combustion Inc. at 74% against Sharp Kitchen's 3%. Combustion Inc. also leads on rating (4.7 vs 1.7) and update cadence (monthly vs every 7 months). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Combustion Inc. holds the better App Store score, 4.7 against 1.7. That said, the two scores are not equally well evidenced: Combustion Inc. has 1.7K ratings behind it against 46, so its average is the more settled of the two. Written reviews point the same way: 3% of Sharp Kitchen's written reviews are positive against 74% of Combustion Inc.'s.

UpkeepUpdate frequency

Sharp Kitchen ships an update every 7 months, Combustion Inc. monthly. The most recent releases landed on August 30, 2026 and September 25, 2026 respectively.

Scorecard4 real differences · 6 level
Sharp Kitchen versus Combustion Inc.: the parameters behind the verdict, then further details
ParameterSharp KitchenCombustion Inc.
PriceFreeFree
Rating1.7 (46 ratings)4.7 (1.7K ratings) — better
Positive reviews2.8% of reviews74.0% of reviews — better
Number of ratings461.7K — better
Update frequencyEvery 7 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size29 MB119 MB
Age rating4+4+
DeveloperSharp Electronics CorporationCombustion Inc.

Customer experience

Sharp Kitchen

All ratings46 ratings
Positive15.2%
Neutral4.3%
Negative80.4%
Written reviews36 reviews
Positive2.8%
Neutral5.6%
Negative91.7%

Combustion Inc.

All ratings1,745 ratings
Positive93.6%
Neutral1.8%
Negative4.6%
Written reviews77 reviews
Positive74.0%
Neutral3.9%
Negative22.1%

Bugs and requests

Sharp Kitchen

Not enough reviews yet to summarise bugs or requests.

Combustion Inc.

Reported bugs

5 issues
  • Thermometer disconnects during use
  • App unable to stop timer
  • Inaccurate temperature readings
  • App unable to find device
  • Firmware update issues

Requested features

5 requests
  • Cooking history and logging
  • Live status widget
  • Apple Watch and Dynamic Island support
  • Ambient temperature alerts
  • Customizable probe labeling

In-app purchases

None

Sharp Kitchen

No in-app purchases

None

Combustion Inc.

No in-app purchases

Questions

Is Sharp Kitchen free?
Sharp Kitchen is free to download, with no in-app purchases.
Is Combustion Inc. free?
Combustion Inc. is free to download, with no in-app purchases.
Which has better reviews, Sharp Kitchen or Combustion Inc.?
Combustion Inc. is rated higher. Sharp Kitchen averages 1.7 out of 5 from 46 ratings, while Combustion Inc. averages 4.7 from 1.7K ratings.
Do Sharp Kitchen or Combustion Inc. have ads?
Neither Sharp Kitchen nor Combustion Inc. shows ads.
Which is updated more often, Sharp Kitchen or Combustion Inc.?
Sharp Kitchen ships an update every 7 months, and Combustion Inc. monthly. Most recently, Sharp Kitchen was updated on August 30, 2026 and Combustion Inc. on September 25, 2026.

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