ABC Observe vs TODO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ABC Observe
This tool simplifies behavior observation and data collection for understanding why behaviors occur. It helps in functional behavior assessments, progress monitoring, and behavior intervention plan development. Analyze frequency, duration, and ABC data, then export results in various chart formats.
- Simultaneous frequency, duration, and ABC data collection
- Export data as CSV, charts, and ABC graphs
- Save and share observation templates
- Functional Behavior Assessment (FBA) support
- Intervention progress monitoring
- Behavior Intervention Plan (BIP) development
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Behavior serves a purpose! Need to understand why a behavior occurs or the events that surround it, then the ABC Observation Made Easy app is right for you. The ABC Observation Made Easy app was created by a Licensed Educational Psychologist and School Psychologist from Santa Monica, California to simplify data collection, display presentation, and to improve data analysis. This app can be used as a part of a functional behavior assessment (FBA), intervention progress monitoring system, behavior modification process, and is useful for behavior intervention plan (BIP) development and implementation. Users can examine many dimensions of a behavior by simultaneously collecting frequency, duration, and ABC data over a single observation session or over multiple days. Results can be exported as raw data through a CSV file, as a frequency & duration chart, ABC bar graph, and/or as a completed ABC chart. Observation templates can be saved for future use and shared across multiple devices. Pricing Plans: 1 week unlimited trial (No subscription required) $1.99 per month $17.99 per year $79.99 forever edition For more information check out www.ABCObserve.com
TODO
Organize your day with tasks, notes, reminders, and time tracking. Break down projects into steps and plan your schedule with a calm, focused interface. Securely sync your data across devices and the web.
- Tasks, notes, reminders, and due dates
- Break tasks into steps
- Recurring tasks
- Built-in time tracking
- Drag-and-drop daily planning
- File attachments
- Color-coded Zones
- Shared tasks and collaboration
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Free, for good Everything you need day to day is free — forever, with no trial and no catch: tasks, steps, notes, reminders, recurring tasks, time tracking, attachments, Zones, calendar, sync across your devices and the web. No feature you rely on is ever taken away. Premium is there only if you want more of it: unlimited attachments and larger files, several timers at once, shared Zones, custom zone icons. Everything you need to stay organized • Tasks, notes, reminders and due dates • Break tasks into manageable steps • Flexible recurring tasks • Built-in time tracking, with a report you can print or save as PDF • Drag-and-drop daily planning • File attachments • Color-coded Zones • Shared tasks and collaboration • CSV import from other to-do apps • Secure cloud sync with your account A calmer way to plan Many task managers try to motivate you with urgency, streaks and constant notifications. TODO-ish takes a quieter approach. The interface stays out of your way so you can focus on what matters, finish what you planned, and then get back to living your life. Your data stays under your control Sign in with Email, Apple or Google, or start immediately in Guest Mode. Protect your tasks with Face ID or Touch ID. When you sign in, your data is securely synchronized across your devices. Your tasks also open in any browser — same account, same data. Whether you're planning a complex project or simply trying to remember to buy groceries, TODO-ish gives you one calm place to keep everything together. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://it4music.com/privacy-policy/
Screenshots
Verdict
The clearest difference is ratings volume: ABC Observe at 36 against TODO's 1. ABC Observe also leads on iOS requirement (12.0 vs 15.0). TODO's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, rating, review sentiment 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. ABC Observe sells 3 in-app purchases, starting at $1.99 per month and TODO sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
TODO holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ABC Observe has 36 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
ABC Observe ships an update every 5 weeks, TODO every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | ABC Observe | TODO |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (36 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 36 — better | 1 |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 52 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | Zhanna Shekhtmeyster | Sound Zone Trade LLC |
Customer experience
ABC Observe
TODO
In-app purchases
ABC Observe
- Monthly Subscription$1.991 Month
- Yearly Subscription$17.991 Year
- Forever Edition$79.99
TODO
- Premium Monthly7 Days trial$3.991 Month
- Premium Yearly7 Days trial$34.991 Year









