DevTasks vs Calleo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DevTasks
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DevTasks – это интерактивное приложение для изучения и практики iOS, созданное для разработчиков любого уровня! Освойте программирование через реальные задачи, научитесь алгоритмическому мышлению и улучшите свои навыки в написании кода. Что вас ждет в DevTasks? -Интерактивные задания – решайте задачи разных уровней сложности, от базовых функций до сложных алгоритмов. - Автоматическая проверка кода – мгновенно получите обратную связь и исправьте ошибки. -Развивайте навыки – улучшайте понимание как писать код, владейте логикой и работайте на реальных примерах. -Пошаговое обучение – начинайте с простого и постепенно осваивайте более сложную концепцию. -Удобный редактор кода – пишите и тестируйте свои решения прямо в приложении. DevTasks – ваш идеальный тренажер для подготовки к собеседованиям, олимпиадам по программированию или просто для развития своих навыков! Cкачайте DevTasks и начните кодировать прямо сейчас!
Calleo
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Calleo: Learn Words with AI is an app for learning and reviewing vocabulary through interactive study tools and game-style exercises. It's made for students, travelers, professionals, and anyone learning a language who wants to grow their vocabulary regularly and conveniently. Instead of just looking through words, you practice them in different types of tasks, so studying stays varied and clear. Flashcards are at the heart of Calleo. Go through cards at your own pace, return to words you've already learned, and focus on the ones that need more practice. It's a handy way to review before a class, a trip, a work meeting, or during a short break — and it suits regular review in small steps, without overloading yourself with big chunks of material. To train your memory, there's also a multiple-choice quiz. It checks whether you can recognize a word's meaning among several options and gradually strengthens the link between a word and how it's used. It's a quick way to run through a small set and see how well you already know it — great for self-testing and for short daily sessions when you only have a few minutes. Another way to learn is the card matching game: find and connect word pairs, turning review into a quick exercise with a playful twist. It's especially useful if you learn better by actively interacting with the material rather than reading word lists, and it adds variety to your practice without losing sight of your learning goal. Calleo also offers fill-in-the-blank exercises with AI-generated sentences. You see each word in context and practice placing it into a sentence. This helps you not only recognize vocabulary but also use it more naturally — when a word appears in a sentence, it's easier to understand how it combines with other words and when it fits. Calleo creates themed vocabulary sets with AI, too. Focus on a specific topic, such as words for travel, studying, or professional communication. Themed sets organize learning around a real goal instead of words unrelated to your needs — a focused way to start when you need to prepare quickly for a trip, work, or a school assignment. Day to day, Calleo is built for short sessions: review words, practice a new topic, or switch the exercise format so you don't lose interest. Mix flashcards, quizzes, the matching game, and fill-in-the-blank exercises depending on what you want to work on today. Learning fits easily into your routine — on a break, on the go, or in the evening after work or class — even if you study irregularly and don't want complicated preparation. If you want a clear way to learn words without extra clutter, Calleo: Learn Words with AI offers exactly that: vocabulary practice in different formats. Learn new words, review familiar ones, and see them in context through simple, varied exercises. Download Calleo if you want a tool for steadily building your vocabulary that combines learning, review, and game elements.
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Verdict
The clearest difference is price: Calleo at Free against DevTasks's $2.99. DevTasks's advantage is device support (3 vs 1). On ads, in-app purchases and iOS requirement 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
Calleo is free to download; DevTasks costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | DevTasks | Calleo |
|---|---|---|
| Price | $2.99 | Free — better |
| Update frequency | — | Every 4 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 16.4 |
| Further details — not scored | ||
| Size | 3 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitry Sagaev | Viacheslav Stetsenko |
In-app purchases
DevTasks
No in-app purchases
Calleo
No in-app purchases









