Comparison

Voice Meter Pro vs SLPFlow

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

SLPFlow

This HIPAA-compliant AI tool assists speech-language pathologists by transcribing sessions and generating SOAP notes, IEP reports, and materials. It allows users to chat with session history for easy editing and new report creation, simplifying speech therapy documentation.

Highlights
  • HIPAA-compliant AI transcription
  • Automated SOAP notes and IEP reports
  • Session history chat for editing
  • Material generation
  • Speech therapy workflow simplification
Features
Read full description

SLPFlow is a HIPAA-compliant AI app that transcribes your sessions or post-session dictations and instantly creates your SOAP notes, IEP reports, and materials. Chat with your patient's full session history to quickly edit existing reports or create new ones. Speech Therapy has never been easier. Terms of Use: https://slpflow.com/terms Privacy Policy: https://slpflow.com/privacy

Screenshots

Voice Meter Pro4 screens
SLPFlow4 screens

Verdict

The call

The clearest difference is review sentiment: SLPFlow at 100% against Voice Meter Pro's 53%. SLPFlow also leads on price (Free vs $6.99) and rating (4.8 vs 3.4). Voice Meter Pro's advantage is in-app purchases (none vs 1) and chart position (#199 vs unranked). On ads 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

SLPFlow is free to download; Voice Meter Pro costs $6.99 up front. SLPFlow sells 1 in-app purchase, starting at $19.99 per month. Voice Meter Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SLPFlow holds the better App Store score, 4.8 against 3.4. Both are backed by a comparable volume of ratings — 10 and 32 respectively. Written reviews point the same way: 53% of Voice Meter Pro's written reviews are positive against 100% of SLPFlow's.

UpkeepUpdate frequency

Voice Meter Pro ships an update every 8 months, SLPFlow every 5 days. The most recent releases landed on September 19, 2026 and September 24, 2026 respectively.

Scorecard9 real differences · 2 level
Voice Meter Pro versus SLPFlow: the parameters behind the verdict, then further details
ParameterVoice Meter ProSLPFlow
Price$6.99Free — better
Rating3.4 (10 ratings)4.8 (32 ratings) — better
Positive reviews52.6% of reviews100.0% of reviews — better
Number of ratings1032 — better
Update frequencyEvery 8 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#199 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better18.2
Further details — not scored
Size14 MB10 MB
Age rating4+12+
DeveloperEDTECH MONSTER LIMITEDJames Strong

Customer experience

Voice Meter Pro

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

SLPFlow

All ratings32 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Voice Meter Pro

No in-app purchases

1 purchases

SLPFlow

Subscriptions1
  • SLPFlow Pro Monthly14 Days trial$19.991 Month

Questions

Is Voice Meter Pro free?
Voice Meter Pro costs $6.99, with no in-app purchases.
Is SLPFlow free?
SLPFlow is free to download, with in-app purchases available.
Which has better reviews, Voice Meter Pro or SLPFlow?
SLPFlow is rated higher. Voice Meter Pro averages 3.4 out of 5 from 10 ratings, while SLPFlow averages 4.8 from 32 ratings.
Do Voice Meter Pro or SLPFlow have ads?
Neither Voice Meter Pro nor SLPFlow shows ads.
Which is updated more often, Voice Meter Pro or SLPFlow?
Voice Meter Pro ships an update every 8 months, and SLPFlow every 5 days. Most recently, Voice Meter Pro was updated on September 19, 2026 and SLPFlow on September 24, 2026.

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