Comparison

Sentinel Pro vs SlangDecoder

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

Head to head
About

Sentinel Pro

Features
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The official iPhone and iPad app for the Sentinel Pro NVR software. This iOS app offers the following features: - Live video and two-way audio from your cameras - Receive push notifications when motion is detected - Control PTZ (Pan, Tilt, Zoom) for cameras with these features - Save or share images from your cameras via email, iMessage, iCloud Photo Sharing and more - Arm or disarm camera recording modes - Easy setup with auto-discovery of servers on your network - View and manage multiple servers - Multiplex: cycle through groups of simultaneous live camera views in full screen - Captures: play back recordings from all your cameras, including motion-detected clips, image files or whole-day movies Please note you will need a Mac running Sentinel Pro 5.3.5 or newer, with a Sentinel Pro software license that covers the number of cameras you want to use in the app. In addition, push notifications and two-way audio require iOS 10.

About

SlangDecoder

Features
Read full description

Do your kids text in another language? Finally β€” a translator built for parents. Slang Decoder instantly converts the phrases, words, and expressions your teens use every day into plain English you can actually understand. Type a phrase you saw in a text message, overheard at dinner, or found in a social media post β€” and Slang Decoder will translate it, explain every term, flag anything concerning, and even write conversation starters to help you talk to your teen naturally. WHAT YOU GET β€’ Plain-English translation of the full phrase or message β€’ Word-by-word breakdown of every slang term β€’ 4-level concern meter: All Clear / Heads Up / Pay Attention / Act Now β€’ Conversation starters β€” natural openers the app writes for you when something is flagged, so you can talk to your teen without the confrontation β€’ Share results in one tap β€” send the full analysis to your co-parent, school counselor, or therapist via Messages, Mail, AirDrop, and more β€’ Voice input β€” heard something but not sure how to spell it? Tap the mic and say it POWERED BY ADVANCED AI Unlike apps with static dictionaries that go out of date, Slang Decoder uses live AI to understand context, nuance, and the latest slang as it evolves β€” so it's always current. WHAT PARENTS ARE DECODING "no cap that rizz was bussin fr fr" β†’ "Honestly, that charm was amazing, for real" β€” All Clear "she's been vaping on the down low, don't snitch" β†’ flagged with concern guidance and conversation starters "he's always geeked at parties, total plug" β†’ flagged with direct conversation openers ONE-TIME PURCHASE $3.99 β€” no subscription, no ads, no in-app purchases. Pay once, own it forever. YOUR PRIVACY MATTERS Slang Decoder does not store your searches, share your data, or require an account. Everything is processed securely and anonymously. Perfect for parents, grandparents, teachers, school counselors, and anyone trying to stay connected to the young people in their lives. Translate teen slang into plain English β€” with a concern meter, AI-written conversation starters, and one-tap sharing.

Screenshots

Sentinel Pro1 screens
SlangDecoder4 screens

Verdict

The call

The clearest difference is price: Sentinel Pro at Free against SlangDecoder's $2.99. Sentinel Pro also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Sentinel Pro is free to download; SlangDecoder costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sentinel Pro ships an update every 3 weeks, SlangDecoder every 2 months. The most recent releases landed on September 21, 2026 and September 5, 2026 respectively.

Scorecard3 real differences Β· 3 level
Sentinel Pro versus SlangDecoder: the parameters behind the verdict, then further details
ParameterSentinel ProSlangDecoder
PriceFree β€” better$2.99
Update frequencyEvery 3 weeks β€” betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS13.0 β€” better17.0
Further details β€” not scored
Size3 MB4 MB
Age rating4+4+
DeveloperBen Software LtdGreg Anderson

In-app purchases

None

Sentinel Pro

No in-app purchases

None

SlangDecoder

No in-app purchases

Questions

Is Sentinel Pro free?
Sentinel Pro is free to download, with no in-app purchases.
Is SlangDecoder free?
SlangDecoder costs $2.99, with no in-app purchases.
Do Sentinel Pro or SlangDecoder have ads?
Neither Sentinel Pro nor SlangDecoder shows ads.
Which is updated more often, Sentinel Pro or SlangDecoder?
Sentinel Pro ships an update every 3 weeks, and SlangDecoder every 2 months. Most recently, Sentinel Pro was updated on September 21, 2026 and SlangDecoder on September 5, 2026.

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