calcMod vs Speech Therapy 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
calcMod
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What are all the digits of the factorial of 69 and how many digits ? What is the gogol number ? How many integers of the form 10^n+1 are prime ? (like 101) Want to know if a big integer is prime ? The change mod function indicates when the number is prime. Want to know the divisors of an integer ? A prime divisor has no inverse modulo this integer. This is a modulo calculator overpowering almost limitless! (only display is limited !) With modulo gogol, calculus are exact until 100 digits ! The "n!" button calculates the factorial of an integer from 0 to 2000 (v2.0). Factorial are limited to factorial of 2000! The "change mod" (change modulo) function indicates when the modulo is prime. There are no limit to the modulo except the display. The "mod gogol" button set a modulo to 10^100 (gogol number). You can stoke one number and recall it when you want. The "Mod" operation indicates the residue modulo N. The exp function allow modular exponentiation (as + - *) The "INV" function calculates the inverse of an integer modulo N. This app is intended for both mathematics teachers and/or their students, or if you are interested in the beauty of numbers. Enjoy calcMod-ProX ! Les commentaires sont disponibles en français (réglages).
Speech Therapy 4
This app helps children practice saying complex words through interactive video exercises and AI-powered feedback. It uses scientifically proven video modeling to engage mirror neurons and rewards improvements with extended playtime.
- AI-powered pronunciation analysis
- 1000+ prerecorded video exercises
- Reward system for improved articulation
- Voice-activated interactive learning
- Scientifically proven video modeling
- Progressive learning steps
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The developer of the only clinically-validated language therapy application MITA that was downloaded by over 3 million families, brings you a series of Speech Therapy apps: Speech Therapy Step 1 – Preverbal exercises Speech Therapy Step 2 – Learn to sequence sounds Speech Therapy Step 3 – Learn to say 500+ words Speech Therapy Step 4 – Learn to say complex words Speech Therapy Step 5 – Record your own model words and exercise articulation Speech Therapy Step 4 is for children who already learned many words and want to exercise on their articulation. HOW IT WORKS? Speech Therapy Step 4 uses 1000+ prerecorded video exercises. These videos encourage children to mirror words’ pronunciation. A proprietary AI algorithm measures similarity between model words and children’s vocalizations. Improvements are rewarded with reinforcers and PlayTime. This technique was demonstrated to improve speech production in toddlers, late talkers (speech delay), children with Apraxia of Speech, Stuttering, Autism, ADHD, Down Syndrome, Sensory Processing Disorder, Dysarthria. Video exercises are followed by a PlayTime. Improvements in performance are rewarded with reinforcers and a longer PlayTime. In order to achieve a longer PlayTime, children try to improve their articulation. In this way the app works autonomously all the time encouraging children to improve articulation. LEARN WITH SPEECH THERAPY STEP 4 - The only speech therapy app that rewards your child proportionally to the improvement of their articulation. - Uses scientifically proven video modeling for effective speech development. - Voice-activated functionality provides a fun, interactive learning experience. - The app basic version is completely FREE! - No ads. SCIENTIFICALLY-PROVEN LEARNING TECHNIQUES Speech Therapy Step 4 uses video modeling to create an immersive learning environment. When children watch model videos in real time, their MIRROR NEURONS are engaged. This is scientifically proven to be highly effective in speech development. FROM THE DEVELOPERS OF THE CLINICALLY-VALIDATED LANGUAGE THERAPY APPLICATION MITA Speech Therapy Step 4 is developed by Dr. A. Vyshedskiy, a neuroscientist from Boston University; R. Dunn, a Harvard-educated early-child-development specialist; MIT-educated, J. Elgart and a group of award-winning artists and developers working alongside experienced therapists.
Screenshots
Verdict
The clearest difference is price: Speech Therapy 4 at Free against calcMod's $0.99. Speech Therapy 4 also leads on iOS requirement (12.0 vs 15.0). calcMod's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs every 2 months). 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
Speech Therapy 4 is free to download; calcMod costs $0.99 up front. Speech Therapy 4 sells 1 one-off in-app purchase. calcMod asks for nothing beyond the download.
calcMod ships an update every 6 days, Speech Therapy 4 every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | calcMod | Speech Therapy 4 |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 3.4 (8 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Every 6 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 170 MB |
| Age rating | 4+ | 4+ |
| Developer | Alain Cardinaux | ImagiRation LLC |
In-app purchases
calcMod
No in-app purchases
Speech Therapy 4
- Speech Therapy Step 4 Lifetime$29.99
Questions
Is calcMod free?
Is Speech Therapy 4 free?
Do calcMod or Speech Therapy 4 have ads?
Which is updated more often, calcMod or Speech Therapy 4?
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