Chess Tempo vs Ask Lyra

The Chess Tempo app provides a mobile and tablet friendly interface for Chesstempo features. Supported features: - CHESS TACTICS TRAINING - Improve your tactics by solving tactical problems, with over 100,000 puzzles available. - Both winning and defensive problem types. - For premium members, solve against sophisticated custom sets that target your weaknesses, for example: - Sets that target a particular tactical motif such as pin, fork, discovered attack etc. - Sets that target your previous mistakes, repeating problems until correct. - Spaced repetition sets. - Note, custom sets can be used on the app, but need to be created on the Chesstempo website. - PLAY ONLINE - Play chess against other Chesstempo users. - Supports both live and correspondence games - Get a full post game analysis after every rated game played. Analysis is spread out over our cluster of hundreds of instances of stockfish, allowing high quality results to be returned in a few seconds. - For premium members, have tactics problems extracted from your games, available for solving in the tactics training UI, and selected via the advanced custom sets feature. - OPENING TRAINING - Create multiple black and white repertoires. - Import repertoires from PGN or by entering the moves on the board. - Train your repertoires using spaced repetition. - Limit training to a branch of a repertoire, a single repertoire, or all repertoires of a colour. - Option to restrict training to a limited depth. - Ability to train against the moves that are proving the most resistant to spaced repetition learning. - Comment on each position or move, and read the comments others have chosen to make public. - Add engine evaluations or annotations such as +=, ?! etc to each move in the repertoire. - Export repertoire and your comments and annotations to PGN. - Graphs showing learning status and progress over time. - Use the opening explorer to choose moves for your repertoire (limited to a depth of 10 moves for free members). - For premium members, the ability to use the cloud engine to ask for analysis on any position. - ENDGAME TRAINING - Practice endgames from 3, 4, 5 , 6 and 7 piece endgame positions extracted from real games. - Over 14000 different positions. - 2 positions per day for free members. - For premium members: - More positions available per day. - Custom sets that can target a particular endgame type, endgames you keep getting wrong, or utilise spaced repetition for training. Note: Some custom sets types need to be created on the Chesstempo website before being used on the app. - GUESS THE MOVE - Learn by playing through master games and get scored on how well you match the master's moves. - ANALYSIS BOARD - Analyse positions using our cloud engines (requires premium membership). Cloud engines allow you to run high quality analysis without using up your own device's battery. Diamond members can request up to 8 analysis threads, analysing many times more positions per second than an engine running on your device could provide. - Setup positions from FEN or by arranging the pieces on the board with the board editor. - Analyse tactics problems after completion to better understand the solution. - PREMIUM SUBSCRIPTIONS - Monthly auto-renew subscriptions are provided via in app purchases for Silver, Gold and Diamond memberships, providing access to more powerful training features. Details of features provided are shown within the app. - Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Terms of Service: chesstempo.com/tos.html

Ask Lyra: The Math Engine From Algebra homework to university-level proofs — Lyra is the AI math tutor built for serious students. Most "math AI" apps spit out an answer and call it a day. Lyra is different. She's a dual-engine math tutor: a fast Standard Engine for everyday Algebra, Geometry, and Trigonometry, and a high-rigor Undergrad Engine that switches on automatically when you tackle Calculus, Linear Algebra, or formal proofs. You get the right tool for the right problem, every time. SNAP & STUDY Point your camera at any worksheet, textbook problem, or test review. Lyra reads it, identifies the topic, and walks you through every step — no skipped logic, no hand-waving. TWO ENGINES, ONE TUTOR • Standard Engine — Lightning-fast help for Algebra 1/2, Geometry, basic stats, and unit conversions. • Undergrad Engine — Activates automatically for Limits, Derivatives, Integrals, Linear Algebra, Differential Equations, and "Prove that…" problems. Formal notation, cited theorems, full rigor. LYRA'S VAULT Save every solved assignment and one-on-one lesson to your personal vault, organized by subject — AP Calc AB, Statistics, Trigonometry, Algebra, and more. Revisit any solution, or ask Lyra to build you a custom practice lesson modeled on the questions you struggled with. ONE-ON-ONE LESSONS Chat with Lyra for as long as you need. Ask follow-up questions, request a different approach, or have her teach a concept from the ground up. Save any lesson straight to your vault for later review. BUILT FOR HIGH SCHOOL & COLLEGE • Pre-Algebra · Algebra 1 & 2 · Geometry · Trigonometry • Pre-Calculus · AP Calculus AB/BC · Statistics • Linear Algebra · Differential Equations · Discrete Math • Formal proofs with LaTeX-rendered notation Apple's End User License Agreement (EULA) applies and is located at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/