Comparison

Robertt vs Sentio

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

Head to head
About

Robertt

Control a robot named Robert via Bluetooth for various interactive functions. You can remotely operate its movements, make it sing and dance, and even create custom dance routines.

Highlights
  • Bluetooth connectivity
  • Remote control interface
  • Singing functionality
  • Dancing capabilities
  • Dance editing
Features
Read full description

Connecting with Robert through Data Bluetooth and Audio Bluetooth, Robert can be controlled by remote control page, singing, dancing for you, and editing dance for Robert.

About

Sentio

Features
Read full description

Sentio turns the sensors already in your iPhone — microphone, camera, torch, accelerometer — into a set of measurement tools, and keeps every measurement on the device. WHAT IT DOES Sentio provides a growing registry of measurement tools. Each one uses the phone's sensors in a specific way: • Spectrum — record ambient sound and see its frequency content, peaks and decay • Color and light — measure colour and brightness with the camera's exposure locked • Blinking — detect and time periodic light sources • Knock — tap an object and capture how it rings and how quickly it damps • Polarization — measure how much light passes through at a quarter turn • Composite tools that drive the torch or the haptic engine and measure the response Some tools use two phones together — one emits, one measures — over a direct Bluetooth link, with no account required. ORGANISE WHAT YOU MEASURE Measurements attach to a simple catalog: categories, objects, and the scenario you measured them for. You can also capture first and file it later. Any measurement can be given a ground-truth label after the fact, so a session of guesses becomes a record you can actually check yourself against. Guided activities chain several tools into one procedure when a single sensor is not enough. OFFLINE BY DEFAULT Everything runs on the device. There is no account, no upload step, and no network call needed to take or view a measurement — the app is fully usable in Airplane Mode, and that is the normal way to use it. Signing in with Apple or Google is entirely optional and does one thing: sync your own catalog between your own devices. HONEST ABOUT WHAT IT IS NOT Sentio is an instrument, not an oracle. It reports what the sensors measured and how it derived the numbers. It does not claim laboratory accuracy, it is not a medical or diagnostic device, and it should not be used to make safety decisions. Phone sensors vary between models; the tools are built around relative and resonance-based features precisely because absolute levels are not comparable across devices. PERMISSIONS • Microphone — required by the audio tools, used only while a measurement is running • Camera — required by the optical tools • Bluetooth — only for the two-phone tools, to find the other handset No advertising, no analytics SDK, no third-party trackers.

Screenshots

Robertt4 screens
Sentio4 screens

Verdict

The call

The clearest difference is update cadence: Sentio at every 3 days against Robertt's every 2 weeks. Robertt's advantage is iOS requirement (11.0 vs 17.0). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

Robertt ships an update every 2 weeks, Sentio every 3 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 8 level
Robertt versus Sentio: the parameters behind the verdict, then further details
ParameterRoberttSentio
PriceFreeFree
Rating3.9 (18 ratings) — better—
Positive reviews61.5% of reviews—
Number of ratings18 — better—
Update frequencyEvery 2 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS11.0 — better17.0
Further details — not scored
Size192 MB16 MB
Age rating4+4+
Developer红 苗Polina Bloshchitcyn

In-app purchases

None

Robertt

No in-app purchases

None

Sentio

No in-app purchases

Questions

Is Robertt free?
Robertt is free to download, with no in-app purchases.
Is Sentio free?
Sentio is free to download, with no in-app purchases.
Do Robertt or Sentio have ads?
Neither Robertt nor Sentio shows ads.
Which is updated more often, Robertt or Sentio?
Robertt ships an update every 2 weeks, and Sentio every 3 days. Most recently, Robertt was updated on October 24, 2026 and Sentio on October 29, 2026.

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