Incredible Numbers! vs Soliloquy Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Incredible Numbers!
Explore the hidden beauty of mathematics with interactive examples and puzzles. Discover concepts like infinity, Pi, and prime numbers through engaging articles and demonstrations crafted by a renowned professor. Uncover the mathematical patterns in nature, music, and codes.
- 23 articles by Professor Ian Stewart
- 71 interactive demonstrations
- 15 mathematical puzzles
- Topics: Infinity, Pi, Music, Codes, Nature, Primes, Polygons, Factorials
- Interactive examples and simulations
- Focus on the beauty of mathematics
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Selected by Apple as Best of 2014, and winner of the 2015 Digital Book Award for Best Nonfiction App. Bestselling author Professor Ian Stewart is your guide through Incredible Numbers. Numbers define the patterns of sunflowers; they bring pleasure through music; and they help us answer existential questions like; ‘How many ways are there to lace my shoes?’ Interactive examples – from simple equations to a working Enigma machine – put the beautiful concepts behind mathematics at your fingertips. “A measure of Ian Stewart’s success is that he’s able to give a clear path through some very hairy mathematics.” – Times Higher Education Supplement There’s so much more than a few screenshots can show: – 23 articles crafted by Prof. Ian Stewart, embedded with 71 groundbreaking interactive demonstrations. – 23 bespoke interactive sections that let you immerse yourself in the beautiful patterns and concepts behind each topic. – 15 of Ian Stewart’s famous mathematical puzzles. Topics include: • Infinity – Explore infinity and understand what it really means to say something is infinite. • Pi – Unwrap the mysteries of pi to see why this strange number is so important and why it’s not just about circles. • Music – Music and math share the beauty of finding patterns in complexity. Detailed interactives show you how they relate in real, meaningful and fun ways. • Codes – See how the power of numbers can unlock complexity in codes. • Nature – See how numbers work in nature by looking at the Fibonacci sequence and how it appears in the real world in beautiful and surprising ways. • Primes – Discover the mysterious patterns in prime numbers, and why they are so important. • Polygons – Get to grips with shapes and polygons. Classical geometry is just another way to think about numbers! • Factorials – How many ways can you lace your shoes? Did you know that if you have 4 eyelets, there are 24 possible lacing styles? With 12 eyelets there are 479,001,600 possibilities. See why this is so in Factorials! Incredible Numbers aspires to convince you that maths is beautiful. Mathematicians know this already. The great solutions and proofs shine to them, but their underlying beauty has been hidden behind abstract algebra and complex equations. Until now. If you enjoy this app, don’t forget to rate it in the App Store.
Soliloquy Pro
Discover and manage monologues for auditions and study. Access over 1100 classical speeches, filter by various criteria, and utilize memorization tools. Add your own monologues and use the teleprompter feature.
- Over 1100 classical monologues
- Filter by gender, age, genre, length
- Save and edit custom monologues
- Memorization tools
- Teleprompter mode
- Audition guides
- iCloud backup
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Soliloquy Pro™ is the perfect monologue finder and manager for students and theatre professionals. Do you need a monologue for auditions for a class? Are you tired of the same overdone monologues that everyone seems to perform over and over? With over 1000 monologues to choose from, you can filter them by age, gender, genre, length, and more to find just the right speech for you. Soliloquy Pro has the following great features: • Over 1100 of the best classical monologues from over 250 plays for both men and women • "Favorite" an unlimited number of your preferred monologues for easy access • Save an unlimited number of your own monologues in My Library from ANYWHERE! • Edit monologues in My Library to the length and style you need • Search monologues by keywords or phrases • Filter speeches by gender, age, genre, line forms, author, play, century or region • Use the Memorization Tools and techniques to help learn your monologue faster • Share monologues with other Soliloquy users • Switch on Teleprompter Mode to use your device as a teleprompter • Included guides: How to Choose a Monologue, Audition Tips, Overdone Monologues, and Memorization Techniques • Print speeches on any AirPrint printer • Backup your Favorites and Library to iCloud • Customize the font and adjust the size • Choose from several color themes for Teleprompter Mode • Use your Apple Watch to control Teleprompter Mode NOTE: Due to copyright restrictions, we can't add modern monologues to the app, but you can add any monolgue you want to Soliloquy. Just paste in your favorite monologues to keep them all in one place!
Screenshots
Verdict
Incredible Numbers! and Soliloquy Pro both sit at 5.0 stars, but that hides the real split: 73% of Incredible Numbers!'s written reviews are positive against 0% of Soliloquy Pro's. Incredible Numbers! also leads on iOS requirement (12.1 vs 15.0). Soliloquy Pro's advantage is update cadence (every 5 months vs every 10 months) and price ($4.99 vs $6.99). On rating, ratings volume, ads and in-app purchases 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
Incredible Numbers! costs $6.99 and Soliloquy Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Incredible Numbers! against 5.0 for Soliloquy Pro. Both are backed by a comparable volume of ratings — 9 and 4 respectively. Written reviews are what separate them: 73% of Incredible Numbers!'s written reviews are positive against 0% of Soliloquy Pro's.
Incredible Numbers! ships an update every 10 months, Soliloquy Pro every 5 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Incredible Numbers! | Soliloquy Pro |
|---|---|---|
| Price | $6.99 | $4.99 — better |
| Rating | 5.0 (9 ratings) | 5.0 (4 ratings) |
| Positive reviews | 73.1% of reviews — better | 0.0% of reviews |
| Number of ratings | 9 — better | 4 |
| Update frequency | Every 10 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 107 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | NatureGuides Ltd. | PlayShakespeare.com |
Customer experience
Incredible Numbers!
Soliloquy Pro
In-app purchases
Incredible Numbers!
No in-app purchases
Soliloquy Pro
No in-app purchases
Questions
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