Comparison

Preposition Remix vs Niki Buttons

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

Head to head
About

Preposition Remix

This app uses music and real-life photos to help children and English Language Learners master prepositions. Users earn musical notes to unlock and play virtual instruments, making learning engaging. It offers professional data tracking and customizable features for tailored learning.

Highlights
  • Music-themed learning
  • Real-life photographs
  • Virtual instrument collection
  • Professional data tracking
  • Customizable preposition targets
  • Adjustable feedback settings
Features
Read full description

Preposition Remix: The Musical Way to Master Spatial Skills Turn up the volume on language learning! Developed by certified speech-language pathologist Barbara Fernandes, Preposition Remix is a high-energy, music-themed app designed to help children, English Language Learners (ELL), and individuals with language delays master the "where" in their world. Why Real Photos Matter Unlike abstract cartoons that can be confusing, Preposition Remix uses nearly 200 real-life, high-quality photographs. This concrete visual anchoring helps neurodivergent students and language learners generalize spatial concepts—like under, between, and closest to—from the screen to their everyday environment. Build Your Virtual Band Motivation is the key to progress! As students correctly identify spatial relationships, they earn musical notes to unlock a virtual instrument collection. From guitars to bagpipes, students can tap and play their instruments, turning therapy into a creative jam session. Features for Professionals and Parents: Comprehensive Library: Targets over 20 core prepositions including above, behind, beside, between, under, in front of, inside, closest to, and furthest from. Professional Data Tracking: Automatically logs session dates, targets attempted, and accuracy percentages in a detailed "Report Card". Complete Customization: Toggle individual prepositions on or off to align with specific IEP goals or classroom lessons. Clinical Scaffolding: Adjust feedback settings to include "No Response" for incorrect taps to reduce frustration, or "Written Cues" to support early readers. Multi-Player Support: Manage multiple student profiles on one device, tracking individual progress and instrument collections separately.

About

Niki Buttons

This app provides a simple way for individuals with communication impairments to express themselves. Users can record voice messages and assign them to large, easy-to-press buttons, optionally adding images for visual cues. It's designed for making requests, participating in activities, or expressing choices.

Highlights
  • Record custom voice messages
  • Assign messages to large buttons
  • Option to add images to buttons
  • Adjust button and record button visibility
  • Supports dark appearance
  • Simple interface for single message communication
Read full description

Niki Buttons is a simple AAC app designed for people with autism or any disability that impairs the ability to communicate. The easiest and most effective way to introduce single message communication to a user. Useful for those who have physical problems with pressing small buttons. Niki Buttons is perfect for making a request, participating in an activity, or making a choice. How it works: - Four buttons available: blue, green, red and yellow. - You can record your voice, and play it back by touching a button. - To record a message, tap the "Record" button. When you are done, simply tap the "Stop" button. You can record over as many times as you need. - Optionally you can choose an image from your device's camera roll and place it over a button. - From Settings, you can choose to show image and record buttons on the top, on the bottom or even hidden. - Dark appearance supported.

Screenshots

Preposition Remix4 screens
Niki Buttons4 screens

Verdict

The call

The clearest difference is price: Niki Buttons at $3.99 against Preposition Remix's $24.99. Niki Buttons also leads on rating (4.8 vs 4.3) and iOS requirement (13.0 vs 15.6). Preposition Remix's advantage is ratings volume (15 vs 4). On update cadence, 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

Preposition Remix costs $24.99 and Niki Buttons $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Niki Buttons holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 15 and 4 respectively.

UpkeepUpdate frequency

Preposition Remix ships an update every 13 months, Niki Buttons every 21 months. Both last shipped on October 23, 2026.

Scorecard5 real differences · 5 level
Preposition Remix versus Niki Buttons: the parameters behind the verdict, then further details
ParameterPreposition RemixNiki Buttons
Price$24.99$3.99 — better
Rating4.3 (15 ratings)4.8 (4 ratings) — better
Positive reviews80.3% of reviews—
Number of ratings15 — better4
Update frequencyEvery 13 months — betterEvery 21 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size102 MB10 MB
Age rating4+4+
DeveloperSmarty EarsAlessandro La Rocca

Customer experience

Preposition Remix

All ratings15 ratings
Positive86.7%
Neutral6.7%
Negative6.7%
Written reviews66 reviews
Positive80.3%
Neutral6.1%
Negative13.6%

Niki Buttons

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Preposition Remix

Reported bugs

12 issues
  • App requires very fine motor skills for accurate scoring
  • App sometimes states incorrect answer as correct
  • App mislabels items after responses
  • Email function for data doesn't disappear after sending/canceling
  • App crashes frequently
Show 7 more
  • App buzzes as if an answer is incorrect when it is correct
  • Stimulus sentences sometimes do not match the picture
  • App occasionally quits unexpectedly
  • Bug with 'on top of' indicating incorrect response
  • Some concepts not accurately pictured (e.g., 'above')
  • Auditory cue does not match visual cue sometimes
  • Small pictures/targets difficult for little fingers to tap

Requested features

12 requests
  • Allow keeping data on more than one student at a time
  • Add visual reinforcement for correct answers
  • Ability to turn off comments/auditory reinforcement
  • Control time between new pages
  • Option to pick which prepositions to work on for the session
Show 7 more
  • Add a skip button
  • Widen the area for correct responses
  • Allow for correct answer/tap to be 'in the general area'
  • Allow for random presentation of prepositions
  • Add visual reinforcers in addition to auditory reinforcers
  • Ability to turn off the voice that is speaking
  • Randomization of concepts

Niki Buttons

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Preposition Remix

No in-app purchases

None

Niki Buttons

No in-app purchases

Questions

Is Preposition Remix free?
Preposition Remix costs $24.99, with no in-app purchases.
Is Niki Buttons free?
Niki Buttons costs $3.99, with no in-app purchases.
Which has better reviews, Preposition Remix or Niki Buttons?
Niki Buttons is rated higher. Preposition Remix averages 4.3 out of 5 from 15 ratings, while Niki Buttons averages 4.8 from 4 ratings.
Do Preposition Remix or Niki Buttons have ads?
Neither Preposition Remix nor Niki Buttons shows ads.
Which is updated more often, Preposition Remix or Niki Buttons?
Preposition Remix ships an update every 13 months, and Niki Buttons every 21 months. Most recently, Preposition Remix was updated on October 23, 2026 and Niki Buttons on October 23, 2026.

Other comparisons