38+ iOS apps & games curated and reviewed
The best riemann apps and games on iPhone average 4.0★ across 38+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (2) | No | No | Aug 2026 |
| 2 |  | Free | — | No | No | May 2026 |
| 3 |  | Free | 4.1★ (7) | No | No | Aug 2026 |
| 4 |  | Free | — | No | No | May 2026 |
| 5 |  | Free | 5.0★ (1) | No | No | May 2026 |
| 6 |  | Free | — | No | Yes | Aug 2026 |
| 7 |  | $1.99 | 4.9★ (63) | No | No | Sep 2026 |
| 8 |  | $2.99 | — | No | No | Aug 2026 |
This app approximates integrals using Riemann summation techniques. Input your function and range, then choose from four methods: Left, Right, Middle, or Trapezoid. It supports common functions and constants.
This platform helps users monetize their private traffic and manage their businesses. It offers tools for tracking earnings, monitoring customer behavior, and creating sales content. Users can also access a learning center for sales techniques.
Explore seven unsolved mathematical mysteries, each with a million-dollar prize. This app adapts content for all skill levels, from middle schoolers to doctoral researchers, with interactive 3D visualizations and built-in quizzes. Learn at your own pace, offline, with no ads or subscriptions.
Engage in a unique math puzzle game where you defeat ghosts by matching numbers with flames. Merge, split, and add to flames to create the correct calculations. Explore over 190 puzzles, daily challenges, and a creative mode to build and share your own levels.
Practice musical pieces for two treble recorders with this app. It allows you to view scores independently for each part and print them. The pitch is set to 440 Hertz for accurate practice.
Access a vast collection of 150 classical music masterpieces with over 12 hours of high-quality audio. Enjoy offline playback, create playlists, and set sleep timers. Unlock the full collection and uninterrupted listening through an in-app purchase.
Access librettos for Carl Orff's "Carmina Burana" and other opera masterpieces. Read along with music playback, view original, English, or bilingual versions, and enjoy a plot summary and character list.
Experience classical compositions with synchronized sheet music. Listen to high-quality historical recordings while following along with flowing musical scores. Features Bach's complete 6 Partitas for keyboard.
Experience the life and inspiration of Sergei Rachmaninoff through an immersive audio journey. Explore his former home, Villa Senar, with location-based or anywhere modes. Features spatial audio and original compositions inspired by his music.
Experience classical music with synchronized sheet music. Listen to high-quality recordings of Beethoven's complete piano sonatas while following along with flowing notation. A comprehensive collection for music lovers.
Experience classical music with synchronized sheet music. This app offers high-quality recordings of Brahms' Cello Sonatas, allowing you to follow along with the score as the music plays. Enjoy a unique and immersive way to appreciate these timeless compositions.
This app provides rehearsal recordings for choral singers to learn their specific voice parts for SATB scores. It guides users through music with a narrator and bar numbers, offering features like looping and adjustable playback speed to master complex passages. Some popular works also include recordings sung by professional singers.
Explore the life and music of a legendary composer through an interactive biography. Discover 16 illustrated chapters detailing his journey from birth to death, complemented by iconic musical pieces.
Test your knowledge of classical music and opera with this quiz app. It features two game levels where you guess operas from posters or composers from portraits, covering various international opera styles. Choose between spelling quizzes or multiple-choice questions to challenge your understanding.
