Comparison

BabySilencer vs HP16C

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

Head to head
About

BabySilencer

This application provides visual stimulation for infants with colors, swirls, sounds, and songs. It serves as a distraction for feeding or soothing when upset, keeping babies engaged and happy. It's designed to aid in visual exercise for early development.

Highlights
  • Visual stimulation with colors and swirls
  • Soothing sounds and songs
  • Distraction for feeding and car seat
  • Engages infants and toddlers
  • Aids visual exercise for development
Features
Read full description

Checkout the Facebook page: https://www.facebook.com/pages/BabySilencer/235652183150585 Here is what users are saying about BabySilencer ****************************************************************************************************** Truly silences infant with colors, swirls, sounds, songs and stimulation. My baby is hard to feed so he stares at this while taking bottle -- the perfect distraction. App also soothes when upset in car seat. Baby grabs phone and stares at colors. What a great invention. ****************************************************************************************************** Truly silences infant with colors, swirls, sounds, songs and stimulation. My baby is hard to feed so he stares at this while taking bottle -- the perfect distraction. App also soothes when upset in car seat. Baby grabs phone and stares at colors. What a great invention. ****************************************************************************************************** My 6 month old son always calms down after looking this. Works like a magic. ****************************************************************************************************** This app is amazing! From my 5 month old to my 4 year old- it's keeps their attention. I think my older kids secretly enjoy playing around with it too!! ;) ****************************************************************************************************** Fantastic app for baby. My 15 month old is hypnotized. Plus my husband is addicted to it. He plays she watches. No adverts either. Can't believe it's a free app. Well done ****************************************************************************************************** Infant's vision is very important for overall development. Between the ages of 3 months and 6 months, babies can focus on small objects and may begin to track them. This is a very useful application to provide you infant with the visual exercise they need and along with some fun. BabySilencer keeps your loved one happy, engaged and quite

About

HP16C

This app faithfully recreates the legendary HP 16C Computer Scientist calculator, offering advanced hex arithmetic, bit manipulation, and base conversion. It features RPN, keystroke programming, and modern enhancements like a two-line display and haptic feedback.

Highlights
  • Full RPN calculator
  • Integer arithmetic (HEX, DEC, OCT, BIN)
  • Configurable word size (1-64 bits)
  • Complete bit operations
  • Keystroke programming
  • Two-line display
  • Haptic feedback
Features
Read full description

A faithful recreation of the legendary HP 16C Computer Scientist calculator for iPhone, with a few modern upgrades. If you've ever needed to perform hex arithmetic, bit manipulation, or base conversion on your phone and been frustrated by the available options, this is for you. RPN-16C gives you the full power of the original HP 16C in your pocket. WHAT IT DOES - Full RPN (Reverse Polish Notation) calculator - Integer arithmetic in HEX, DEC, OCT, and BIN - Configurable word size from 1 to 64 bits - Unsigned, one's complement, and two's complement modes - Complete bit operations: shift, rotate, rotate through carry, AND, OR, XOR, NOT, mask, bit set/clear/test, count bits, left justify - Float mode with configurable precision (FLOAT 0-9) - Keystroke programming with labels, subroutines, loops, and conditionals - Storage registers with direct and indirect addressing - Programs can be imported from text (long-press the display to paste) ENHANCEMENTS OVER THE ORIGINAL - Two-line display: see both X and Y registers at once. No more guessing what's on the stack. - Wider LCD: displays all 32 bits in binary without scrolling. The original could only show 8 at a time. - Haptic feedback on every key press - State persistence: pick up right where you left off - SHOW function to peek at values in other bases FAIR WARNING This is a quirky calculator. It uses Reverse Polish Notation, has no equals key, and expects you to know what two's complement means. If you're looking for a simple calculator, this is not it. If you've ever wished you could do a bitwise rotate through carry on your phone, welcome home. DESIGNED FOR PROGRAMMERS The key layout matches the physical HP 16C exactly, including the f (gold) and g (blue) shift labels. If you know the original, you already know this one. The original HP 16C Owner's Handbook is freely available on the Internet Archive: https://archive.org/details/hp-16c_handbook

Screenshots

BabySilencer4 screens
HP16C4 screens

Verdict

The call

The clearest difference is update cadence: HP16C at weekly against BabySilencer's every 5 months. BabySilencer's advantage is iOS requirement (12.0 vs 17.0). 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.

UpkeepUpdate frequency

BabySilencer ships an update every 5 months, HP16C weekly. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
BabySilencer versus HP16C: the parameters behind the verdict, then further details
ParameterBabySilencerHP16C
PriceFreeFree
Rating—4.3 (4 ratings) — better
Positive reviews53.8% of reviews—
Number of ratings—4 — better
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size25 MB1 MB
Age rating4+4+
Developerjolly1312Michael Doornbos

Customer experience

BabySilencer

Written reviews13 reviews
Positive53.8%
Neutral0.0%
Negative46.2%

HP16C

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

None

BabySilencer

No in-app purchases

None

HP16C

No in-app purchases

Questions

Is BabySilencer free?
BabySilencer is free to download, with no in-app purchases.
Is HP16C free?
HP16C is free to download, with no in-app purchases.
Do BabySilencer or HP16C have ads?
Neither BabySilencer nor HP16C shows ads.
Which is updated more often, BabySilencer or HP16C?
BabySilencer ships an update every 5 months, and HP16C weekly. Most recently, BabySilencer was updated on October 16, 2026 and HP16C on October 24, 2026.

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