Cactus vs Oops! AI Memory Assistant
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cactus
An AI-powered assistant designed to help you manage your day, capture ideas, and organize tasks. It offers natural language interaction, voice input, and secure cloud synchronization for seamless productivity.
- AI-powered assistant
- Natural language interaction
- Voice capture for ideas
- Task organization
- Schedule management
- Secure cloud sync
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Cactus is an AI memory sidekick for the tasks, dates, promises, and personal details you do not want to forget. Press the microphone and speak naturally. Cactus can save a reminder, organize a task, remember an important detail, and help you prepare before something is due. SPEAK IT. CACTUS SAVES IT. • Save reminders and important details by voice • Turn plans and deadlines into organized tasks • Find tasks by today, tomorrow, next week, next month, or later • Ask Cactus about information you previously saved • Type instead whenever speaking is not convenient PREPARE BEFORE IT BECOMES URGENT Cactus can suggest a useful next step when preparation would genuinely help. Mention an upcoming birthday, for example, and Cactus may offer to create a task for choosing a gift. Routine reminders stay simple. YOUR DAY, ORGANIZED Review tasks, calendar plans, and saved memories in one place. Cactus helps you see what is due now and what is coming next. PRIVATE ICLOUD SYNC Your Cactus archive is stored on your devices and mirrored through your private iCloud account so it can stay in sync across your Apple devices. Cactus does not use a public or shared memory database. Voice and message content is sent securely to the AI service when needed to transcribe speech or provide a response. Cactus Premium includes a 7-day free trial, followed by a recurring subscription. Your exact local price and renewal terms are shown before purchase. Terms of Use: https://cactus-site.vercel.app/terms Privacy Policy: https://cactus-site.vercel.app/privacy
Oops! AI Memory Assistant
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Oops! transforms how you remember. It's not just a note-taking app—it's your intelligent memory consultant that prevents those "I forgot!" moments before they happen. NEVER MISS THE CONNECTIONS - AI automatically maps relationships between people and conversations - Recall who said what, when, and in what context - Navigate your social and professional network with complete confidence - See the full picture when relationships between memories matter YOUR INTELLIGENT CONSULTANT - Combines advanced AI with your personal context - Goes beyond storage to provide real answers - Understands your needs and responds intelligently INSTANT MEMORY RECALL - Ask questions in plain language, get precise answers - Find any conversation, thought, or detail immediately - No more digging through endless notes - Your entire memory accessible in seconds EFFORTLESS CAPTURE - Speak naturally—AI transcribes with accuracy - Type messages in your own words - Automatic organization and categorization - Zero friction between thinking and remembering SMART ORGANIZATION - Calendar integration for visual task management - Context-aware reminders that understand priorities - Automatic categorization based on content - Transform chaos into clarity - Industry-standard encryption and secure cloud storage - Sign in with Apple, Google, Facebook, or email - Export or delete everything anytime - Your memories stay yours—no ads, no tracking Stop having "Oops!" moments. Start remembering everything that matters. Perfect for professionals managing complex relationships, students tracking coursework and ideas, or anyone tired of forgetting important details from their daily life. Terms of Use: https://oopsai.app/termsofuse Privacy Policy: https://oopsai.app/privacypolicy
Screenshots
Verdict
The clearest difference is update cadence: Oops! AI Memory Assistant at every 2 days against Cactus's weekly. Oops! AI Memory Assistant also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support 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. Cactus sells 1 in-app purchase, starting at $4.99 per month and Oops! AI Memory Assistant sells 5 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Cactus ships an update weekly, Oops! AI Memory Assistant every 2 days. The most recent releases landed on July 24, 2026 and September 9, 2026 respectively.
| Parameter | Cactus | Oops! AI Memory Assistant |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Feidong Song | Necati Bora Gurel |
In-app purchases
Cactus
- Premium plan.$4.991 Month
Oops! AI Memory Assistant
- Starter$0.991 Month
- Regular$3.991 Month
- Power$6.991 Month
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- Heavy$12.991 Month
- +50 interactions$0.99









