Comparison

Voice Meter Pro vs Speech Assistant AAC

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

Head to head
About

Voice Meter Pro

This app helps children and adults, particularly those with autism spectrum disorders, monitor and control their voice volume. It uses visual cues like colored backgrounds and cartoon characters to indicate if the volume is too low, too high, or just right.

Highlights
  • Visual volume thermometer
  • Adjustable sensitivity slider
  • Dampening slider for smooth meter movement
  • Customizable green zone limits
  • Portrait and landscape modes
  • iPhone vibration alert
Features
Currently charting
Read full description

The "Voice Meter Pro" app for the iPad, iPhone and iPod touch, is a simple, but effective app that helps children with autism spectrum disorders (ASD's), voice disorders, or any other child (or adult) monitor the volume of their own voice in a Fun and Engaging way. Children with Asperger’s and other ASD’s often have difficulties producing the appropriate voice volume in different settings. Some children on the autism spectrum speak too quietly. Others speak too loudly. Still others do not compensate adequately for the social milieu or ambient noise level. Understanding abstract concepts, such as the volume of one’s voice, can be difficult for children with ASD's. It’s well understood that adding a visual component to the otherwise abstract concept can often be very helpful for individuals with ASD. OK so how does the app work? Well….if a child is talking to quietly a blue background with a cartoon character struggling to hear is displayed. If a child is talking too loudly the background changes to red and the character puts it’s fingers in its ears. If the volume level is acceptable a green background with a smiling happy character is displayed. • The on screen “volume thermometer” dynamically displays the volume level as it changes. • There’s a "Sensitivity" slider so the adult can adjust the volume sensitivity to suit both the user and the environment. • There’s also a "Dampening" slider. This helps avoid the meter bouncing around in between words by introducing a slight delay before any movement is shown on the “volume" thermometer. • To give the user total control over the app the Upper and Lower limits of the "Green" (acceptable volume area) can now be adjusted by the user. • For convenience the app works in both portrait and landscape modes on all the iPhone, iPod Touch and iPad. • the iPhone version of the app has a switch to enable the iPhone to vibrate should the upper threshold level be exceeded for longer than 4 seconds. We want to make this app the very best it can be and to this end we have included a feedback form inside the app for users to submit any issues or suggestions as to how it can be improved. Why not download the app and give it a try?...... you might find it a very useful tool.

About

Speech Assistant AAC

This text-to-speech app assists individuals with speech impairments by allowing them to create custom buttons with saved phrases and symbols. It offers a fully customizable interface, various voice options including AI clones, and can be used during phone calls. The app supports multiple user profiles and iCloud backups for easy data transfer.

Highlights
  • Customizable buttons with phrases and symbols
  • Multiple voice options including AI clones
  • Full-screen mode for large font display
  • Category and subcategory organization
  • User profiles for multiple individuals
  • iCloud backup and transfer
Features
Read full description

Speech Assistant AAC is a text-to-speech app designed for people who are speech impaired, for example due to Aphasia, MND/ALS, Autism, Stroke, Cerebral Palsy or other speech problems. With the app you can create categories and save phrases on buttons for quick access and easy communication. You can also type messages using the iOS keyboard. The app is affordable with a one-time payment and no subscription. Key features • Easy to use and fully customizable to your needs and preferences. • Categories and subcategories to organize your phrases. • History feature to quickly access previously entered phrases. • Option to add symbols, emoji or photos to the buttons. • Full screen mode to display your messages in large font. • Autocomplete feature to display phrase suggestions in a drop-down list. • Tabs for multiple conversations. • Designed for iPhone and iPad, supports both portrait and landscape orientation. • Supports Apple Watch. • Backup to iCloud, Mail or AirDrop. Voices • You can choose a voice from any of the iOS system voices. • Supports ElevenLabs voices, giving you the option to use highly realistic AI professional voice clones. • Supports Apple's Personal Voice. • Option to create voice recordings for the buttons and to import voice recordings. Phone calls • The app can also be used while making Phone and FaceTime calls. • This works with iOS system voices and with iOS 18 also with ElevenLabs voices and regular recordings (app setting). Categories and phrases • Add, change or delete your own (sub)categories and phrases. • You can create an unlimited number of categories to organize your phrases for quick access. • Create user profiles with their own categories, phrases and settings for multi-language support or different individuals. • Easily edit category and phrase buttons with a long press. • With Backup to iCloud or AirDrop you can transfer your categories and phrases to another iPhone/iPad. Fully Customizable • The size of the buttons, the textbox and the text can be adjusted. • The app has various color schemes and you can also create a personal color scheme. • You can change the order of the buttons with drag and drop. Full screen • Show your message full screen with a very large font. • Useful for communicating in a noisy environment. • You can rotate the text to show your message to the person opposite of you. Speech • The rate and pitch of the speech can be adjusted. • Option to speak each Word or Character directly while typing. • Optional highlighting of the spoken words. • Pause and resume speaking by tapping the speak button (optional setting). Apple Watch • The Watch app can especially be useful for communicating short messages. • On the go, you don't have to pick up your phone and can quicky communicate with the app on your wrist. Other features • Button to share your message to mail, text and social media. • Connect a bluetooth keyboard and create shortcuts for actions. • A custom keyboard can be enabled in the settings with customizable size, color and layout. • Abbreviations expansion to reduce keystrokes. • Attention sound button on Main and Full screen. • Option to select symbols from the set of 3400 Mulberry Symbols (mulberrysymbols.org). About the app • This app is developed by ASoft. • The app does not collect any data, so all your conversations stay private. • One-time payment, there is no subscription fee. • The app has won an innovation award: The Vodafone Mobiles For Good Challenge. • The app does not require an internet connection. • For feedback or questions, please contact: speechassistant@asoft.nl. • On www.asoft.nl you can find more information such as a user manual.

Screenshots

Voice Meter Pro4 screens
Speech Assistant AAC4 screens

Verdict

The call

The clearest difference is price: Voice Meter Pro at $6.99 against Speech Assistant AAC's $24.99. Voice Meter Pro also leads on iOS requirement (8.0 vs 15.5). Speech Assistant AAC's advantage is rating (4.5 vs 3.5) and update cadence (every 3 weeks vs every 8 months). On ads, in-app purchases, monetization model and chart position 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

Voice Meter Pro costs $6.99 and Speech Assistant AAC $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Speech Assistant AAC holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: Speech Assistant AAC has 104 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 53% of Voice Meter Pro's written reviews are positive against 81% of Speech Assistant AAC's.

UpkeepUpdate frequency

Voice Meter Pro ships an update every 8 months, Speech Assistant AAC every 3 weeks. Both last shipped on October 26, 2026.

Scorecard6 real differences · 5 level
Voice Meter Pro versus Speech Assistant AAC: the parameters behind the verdict, then further details
ParameterVoice Meter ProSpeech Assistant AAC
Price$6.99 — better$24.99
Rating3.5 (12 ratings)4.5 (104 ratings) — better
Positive reviews52.6% of reviews81.3% of reviews — better
Number of ratings12104 — better
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#31#22 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS8.0 — better15.5
Further details — not scored
Size14 MB131 MB
Age rating4+4+
DeveloperEDTECH MONSTER LIMITEDTon Schalke

Customer experience

Voice Meter Pro

All ratings10 ratings
Positive60.0%
Neutral10.0%
Negative30.0%
Written reviews19 reviews
Positive52.6%
Neutral5.3%
Negative42.1%

Speech Assistant AAC

All ratings104 ratings
Positive87.5%
Neutral6.7%
Negative5.8%
Written reviews91 reviews
Positive81.3%
Neutral9.9%
Negative8.8%

Bugs and requests

Voice Meter Pro

Not enough reviews yet to summarise bugs or requests.

Speech Assistant AAC

Reported bugs

17 issues
  • Default category button cannot be deleted
  • Images with transparent backgrounds turn white
  • Color picker does not work
  • Blank word slot in new subcategories cannot be deleted
  • Recorded or imported audio on buttons doesn't play on phone calls
Show 12 more
  • Cannot send voice message to WhatsApp
  • App crashes on iOS 17.5.1 on iPhone XS
  • Hex codes keep changing after input
  • Return key to send/speak disabled in latest update
  • Syncing from iPad to iPhone not happening
  • Categories don't stay on conversation when switching tabs
  • App keeps crashing/freezing
  • Option to not read directly seems to no longer work
  • Speech button not working
  • Syncing between iPhone and iPad not working
  • App crashes when another app uses speaker
  • Voice output not heard during phone calls

Requested features

42 requests
  • Ability to move sub-categories
  • Toggle for reading category names
  • Sub-sub-categories
  • Option to choose image files
  • Color picker for customization
Show 37 more
  • Delete blank word slot in subcategories
  • Send text to speech to WhatsApp
  • Shortcut to Control Panel
  • Ability to reset element sizes
  • Ability to clone own voice
  • Drag option for moving positions
  • Syncing between devices
  • More symbols for basic words
  • Control AI devices (Echo, Google)
  • Child voices for TTS
  • Option to use only iPhone/iPad speaker easily
  • Better autocorrect
  • Fix mispronunciation of words
  • Ability to print phrases from app
  • Change font size of settings/documentation
  • More than 5 choices in 'Clear/Restore'
  • Ability to create sub-categories
  • Record/import audio on phone calls
  • Full screen mode
  • Option for UK female voice
  • Draw within the app and convert to text
  • Customize buttons with color
  • Add own voice to phrases
  • Eye control app
  • Make pictures on text buttons appear in read-out windows
  • Use own pre-recorded voice
  • Text can be shown in large print
  • Add a lock on app configuration
  • Use own voice for TTS
  • More advanced audio options
  • Better integration with other apps
  • Option to not read directly when disabled
  • Full functionality access for recording sessions
  • Return key to send/speak functionality
  • Sync categories with conversation tabs
  • Ability to delete default category button
  • Support for other languages

In-app purchases

None

Voice Meter Pro

No in-app purchases

None

Speech Assistant AAC

No in-app purchases

Questions

Is Voice Meter Pro free?
Voice Meter Pro costs $6.99, with no in-app purchases.
Is Speech Assistant AAC free?
Speech Assistant AAC costs $24.99, with no in-app purchases.
Which has better reviews, Voice Meter Pro or Speech Assistant AAC?
Speech Assistant AAC is rated higher. Voice Meter Pro averages 3.5 out of 5 from 12 ratings, while Speech Assistant AAC averages 4.5 from 104 ratings.
Do Voice Meter Pro or Speech Assistant AAC have ads?
Neither Voice Meter Pro nor Speech Assistant AAC shows ads.
Which is updated more often, Voice Meter Pro or Speech Assistant AAC?
Voice Meter Pro ships an update every 8 months, and Speech Assistant AAC every 3 weeks. Most recently, Voice Meter Pro was updated on October 26, 2026 and Speech Assistant AAC on October 26, 2026.
Which is more popular, Voice Meter Pro or Speech Assistant AAC?
Voice Meter Pro currently peaks at #31 in the App Store charts, and Speech Assistant AAC at #22. Chart position reflects recent download velocity rather than total install base.

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