Delta vs 试题库
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Delta
This app helps users solve math problems by creating and executing algorithms. It offers tools for homework checking, test preparation, and creating custom quizzes. Users can save, share, and download algorithms via the cloud.
- Create algorithms with natural language
- Execute algorithms to solve math problems
- Create and download custom quizzes
- Save and share algorithms
- Cloud synchronization for algorithms
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With Delta: Algorithms, quickly solve any math problem with an algorithm. Save time checking your homework or studying for a test, it’s free! AVAILABLE FEATURES - Create algorithms with an easy and natural language in the editor - Quickly execute algorithms to solve any math problem - Create (or download) a quiz to train yourself - Save your algorithms on your device, share then on the Cloud, or download ready-to-use algorithms shared by other people EXAMPLE OF USAGE - Create an automated calculator for well known theorems or equations - Create a quiz to train solving equations CLOUD SUBSCRIPTION A Cloud subscription is available; It allows you to synchronize your algorithms across your devices and share them with other people on the Cloud. Application developed by Nathan Fallet © 2020 Groupe MINASTE
试题库
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试题库APP是一款将海量优质学习资源与实用学习功能有机融合的学习软件。考试库涵盖英语类、计算机类、考研类、公务员类、财经类、司法类、医学类、工程类、专升本类、自考类、职业资格类、实用职业技能类等热门考试科目，提供名师精讲教学视频、历年真题/模拟题等优质学习资源。试题库还提供课程学练、模拟自测专项练习、学习进展、错题记录、错题组卷、智能考试等学习功能，为您日常学习与复习备考提供一站式服务。
Screenshots
Verdict
The clearest difference is in-app purchases: 试题库 at none against Delta's 3. Delta's advantage is update cadence (monthly vs every 3 months) and device support (4 vs 1). On price and ads 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
Both are free to download. Delta sells 3 one-off in-app purchases. 试题库 asks for nothing beyond the download.
Delta ships an update monthly, 试题库 every 3 months. The most recent releases landed on August 19, 2026 and September 13, 2026 respectively.
| Parameter | Delta | 试题库 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (7 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 13.0 — better | 17 |
| Further details — not scored | ||
| Size | 5 MB | 18 MB |
| Age rating | 4+ | 17+ |
| Developer | Groupe MINASTE | 中科软股教育科技(北京)股份有限公司 |
In-app purchases
Delta
- Donation 1$0.99
- Donation 2$2.99
- Donation 3$4.99
试题库
No in-app purchases
