Comparison

Annotation Camera vs MQTT Checker

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

Head to head
About

Annotation Camera

Features
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- Useful for AI developers in tasks such as collecting teacher image data. Note: It is not equipped with AI to classify, but it is an application to manually classify and use it for AI development. Please be careful. Features - It has a function to register the classification (class) first and sort the photos taken into each classification. - Photos are sorted and saved in folders and reflected in the file name. - There are two types of classification available: a mode in which you first select which class to shoot continuously, and a mode in which you select each time you shoot. - You can output the photos you have taken by sharing them by category. Main functions - Still image shooting - Save captured images by category - Continuous shooting to one category - Share and delete captured images About Paid Version - In the free version, you can create up to 3 categories (the destinations for the photos you take) at the same time. - By switching to the paid version, you can create up to 50 pieces. - Once purchased, you can use the paid version indefinitely.

About

MQTT Checker

Features
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MQTT Checker is an amazingly simple application that quickly checks MQTT connections. This app helps users swiftly verify their ability to connect to MQTT servers. Users can easily input essential information such as ServerUrl or IP and ServerPort, and optionally configure ClientID, Broker Name, Topic, and Message. Key Features: Swift MQTT Server Connection Verification: MQTT Checker swiftly confirms the ability to connect to MQTT servers by allowing users to input ServerUrl or IP and ServerPort through a user-friendly interface. Additional Configuration Options: Optionally set ClientID, Broker Name, Topic, and Message to tailor MQTT connection tests to your preferences. Concise Notifications: Upon successful connection to the MQTT server, clear and concise notifications inform users. Error Messages on Failure: In case of failed MQTT server connections, display error messages to quickly identify issues.

Screenshots

Annotation Camera4 screens
MQTT Checker4 screens

Verdict

The call

The clearest difference is in-app purchases: MQTT Checker at none against Annotation Camera's 1. Annotation Camera's advantage is update cadence (every 4 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Annotation Camera sells 1 one-off in-app purchase. MQTT Checker asks for nothing beyond the download.

UpkeepUpdate frequency

Annotation Camera ships an update every 4 days, MQTT Checker monthly. The most recent releases landed on October 25, 2026 and October 12, 2026 respectively.

Scorecard2 real differences ยท 4 level
Annotation Camera versus MQTT Checker: the parameters behind the verdict, then further details
ParameterAnnotation CameraMQTT Checker
PriceFreeFree
Update frequencyEvery 4 days โ€” betterMonthly
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS12.012.0
Further details โ€” not scored
Size30 MB38 MB
Age rating4+4+
DeveloperSAKAI SYSTEM AND CONSULTING LLC.DreamNexus

In-app purchases

1 purchases

Annotation Camera

One-time1
  • class_limit_release$2.99
None

MQTT Checker

No in-app purchases

Questions

Is Annotation Camera free?
Annotation Camera is free to download, with in-app purchases available.
Is MQTT Checker free?
MQTT Checker is free to download, with no in-app purchases.
Do Annotation Camera or MQTT Checker have ads?
Neither Annotation Camera nor MQTT Checker shows ads.
Which is updated more often, Annotation Camera or MQTT Checker?
Annotation Camera ships an update every 4 days, and MQTT Checker monthly. Most recently, Annotation Camera was updated on October 25, 2026 and MQTT Checker on October 12, 2026.

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