Tether vs Tudu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tether
This app helps individuals with ADHD manage their tasks and focus by visualizing their day with time blocks. It breaks down overwhelming tasks into smaller steps and offers a focus timer with calming sounds. Users can track energy levels to plan demanding activities more effectively.
- Visual time blocks for daily planning
- Task breakdown into small steps
- Energy level tracking for tasks
- Full-screen focus timer with background sound
- Apple Calendar sync
- Voice task input
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Feel overwhelmed by everything you need to do? Tether is a visual planner built for ADHD and easily overwhelmed minds. Instead of endless to-do lists, you see your day as simple blocks of time — and make progress one step at a time. SEE YOUR DAY • Visual time blocks — your whole day at a glance, not a bottomless list • Drag to reschedule — move things around without friction or guilt • Energy tracking — learn which tasks drain you and which recharge you • Apple Calendar sync — meetings and tasks on one timeline GET UNSTUCK • Turn overwhelming tasks into tiny, doable steps • Add tasks just by speaking, in your own words • Get gentle schedule suggestions when you don't know where to start (Optional — only when you need extra help.) FOCUS BETTER • A full-screen focus timer with calming background sound • A gentle nudge when you've lost track of time • A lock-screen Live Activity so you always know what's next • 7 themes to make it feel like yours Every task has an energy level, from draining to recharging. Tether shows your weekly and monthly balance so you understand why some days feel impossible — and plan the hard things for when you actually have energy. TETHER PREMIUM Unlock voice capture, task breakdown, schedule suggestions, themes, advanced energy insights, and calendar sync. Choose monthly, yearly, or a one-time lifetime purchase. Download Tether free. Start where you are. Build momentum one block at a time. Tether offers monthly and yearly subscriptions, plus a one-time lifetime purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://tether-web-cyan.vercel.app/terms.html Privacy Policy: https://tether-web-cyan.vercel.app/privacy.html
Tudu
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Tudu: ADHD planner and brain dump by voice, with an Eisenhower matrix built in Say what's on your mind in one sentence and Tudu turns it into a sorted task list. Tell it "buy milk and call mom tomorrow at six" and it splits that into two tasks, sets the date, time and urgency, and files each into the right list — no forms, no dropdowns, no typing required. Add tasks by voice Speak the way you think — one sentence, as many tasks as you like at once. The parser finds the date, duration and urgency by itself, so you never fill out a form. Only text reaches our server Your iPhone's speech recognition turns what you say into text. Only that text reaches our server, where a third-party AI language model splits it into tasks — your list and tag names and time zone travel with it, so everything lands in the right place at the right time. Three planning methods, one database Switch with a single tap; nothing is lost or rewritten. • GTD — tasks, calendar, projects, someday • FVP — exactly three tasks a day, Tudu refuses a fourth • Eisenhower matrix — urgent, important, small stuff and the rest, sorted automatically Built for ADHD, useful for anyone A hard daily limit instead of an endless backlog. The "where do I start" button shows you one task and asks if you're ready for it; if not, it shows you the next one. You always choose between two, never between forty. Reminders that actually fire Reminders are checked against your task list: a finished task stays quiet, and a moved task reminds you at its new time instead. Set a time once, and Tudu reminds you right then. Stats without streaks Daily and weekly load, what you get stuck on, which tasks you finish, when your working hours really are. There are no streaks and there never will be — skipping something for a reason isn't a failure. No ads, no account, no sign-up No advertising at all. No registration of any kind. Your data stays on your iPhone and exports to CSV or Markdown whenever you like. Lists, calendar and reminders all work without an internet connection. Anything you type while offline waits in a queue and sorts itself out the moment you're back online. Also inside • Boards for work, home and study, each with its own method • Custom tabs: rename, reorder, hide • Calendar with a week strip and a full month, projects with sub-steps • A memory of ideas and reference notes, searchable anytime • Trash with one-tap restore • Light and dark themes Who Tudu is for Adults with ADHD who want a planner that sets its own limits. Students juggling classes and a part-time job. Freelancers with no manager to set their priorities for them. Parents whose home and work tasks keep colliding. Get started in a minute Say your first sentence and Tudu sorts it into a date and a list before you put your phone down. Pick how you want to run it: a simple list, GTD, FVP or the Eisenhower matrix — and switch whenever you like without losing a single task. Frequently asked questions Is this just a to-do list, or something more? Both: run a plain list, or switch to GTD, FVP or the Eisenhower matrix once you need more structure. Do I need a diagnosis to use an ADHD planner like Tudu? No — the same daily limit and matrix work whether or not ADHD is part of the picture. Do I need to be online to add tasks by voice? You need a connection to turn speech into sorted tasks; your lists, calendar and reminders keep working without one. Will I lose anything if I switch planning methods? No — every task carries over, however you choose to view it. Do I have to make an account? No — no account, no ads, and your tasks stay on your phone.
Screenshots
Verdict
The clearest difference is iOS requirement: Tudu at 16.4 against Tether's 18. On price, update cadence, ads and in-app purchases 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. Tether sells 6 in-app purchases, starting at $2.99 per month and Tudu sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Tether ships an update every 4 days, Tudu every 6 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Tether | Tudu |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 days — better | Every 6 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18 | 16.4 — better |
| Further details — not scored | ||
| Size | 34 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Sanket Ray | Volkan Azimob |
In-app purchases
Tether
- Tether Plus$2.991 Month
- Tether Premium$7.991 Month
- Tether Plus$29.991 Year
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- Tether Premium$44.991 Year
- Tether Plus$49.99
- Tether Premium$124.99
Tudu
- 14-day TrialFree
- Full version$9.99









