Comparison

Underload vs VisibleHour

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Underload

This productivity app helps you focus by displaying only one task at a time from your to-do list. It syncs seamlessly with Apple Reminders, allowing you to manage tasks across all your devices and use familiar voice commands and shortcuts.

Highlights
  • Single task display
  • Syncs with Apple Reminders
  • Cross-device synchronization
  • Supports Siri and Shortcuts
  • Linear task progression
Features
Read full description

It's all in the title. Do you ever feel overwhelmed by the sheer number of tasks on your to-do list? Adding all your tasks only to be faced with a seemingly endless list can make it hard to get anything done. That's why I created Underload, a to-do list app for iPhone, iPad, and Mac that only shows you one task at a time. You can add all your tasks, but you'll only see the next one you need to tackle. You get a clear, linear path forward, a singular focus. Best part is, it two-way syncs with Apple Reminders, so your tasks sync across all your devices and you can keep using Siri, HomePod, Shortcuts, and whatever other integrations you're used to to manage tasks. Privacy Policy: https://www.underload.app/privacypolicy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

VisibleHour

Features
Read full description

An always-visible view of time on your phone, your wrist, and your spatial workspace. The day, drained as it passes. Your session, draining as you work. A quiet tap on your wrist when you've been at something too long. For when 30 minutes feels like 5. VisibleHour is a single-purpose external time sense — designed for people whose internal clock isn't always reliable. For time blindness. For hyperfocus. For the moments when "just five more minutes" becomes an hour. The dial isn't a clock face you check. It's a clock face you live alongside, on every surface you already glance at. Three rhythms, on every screen. The day. Your waking hours rendered as a draining amber arc — from the moment you start your day until you wind it down. Tells you how much day is in front of you, not just what time it is right now. The session. A focused block — 15, 25/5 Pomodoro, 30, 60, or 90 minutes. The pie at the center drains as time passes — a visual timer at session scale. Tap it to zoom into a visual timer face with minute marks. Pomodoro mode shows two amber tones — work, then a softer break. The body. A quiet tap on the wrist at the interval you set — 60, 90, or 120 minutes. No banner. No streak. No "you've been at this for two hours" guilt. Just a tap that says: notice the time. Optional desk mode — keep your phone or iPad awake during a session so the dial stays visible while you work. Cross-device sync. Start a session on your Vision Pro while working in spatial. Within a second, the Live Activity appears on your iPhone Lock Screen and the dial fills on your Apple Watch. Stop on the Watch — every screen clears together. Powered by iCloud private database, with no telemetry leaving your device. Calendar-aware. Optionally show your day's events on the dial — a quiet ink line for each meeting, sitting alongside your session. Tap the dial to surface the next event's title. Widgets everywhere. Lock Screen and Home Screen widgets on iPhone. Native complications on Apple Watch in four families. A spatial widget on Apple Vision Pro that coexists with your email, your MacBook display, and whatever else is in your spatial workspace. What it isn't. This is not a habit tracker. Not a productivity hammer. Not a notification machine. There are no streaks, no leaderboards, no "you used the app 12 days in a row" celebrations. There's no analytics, no third-party SDKs, no ads. The whole product is one quiet answer to a quiet question — how much time has passed? Privacy. No tracking. No analytics. No third-party services. The only data that ever leaves your device is the small piece of state that syncs through your private iCloud (active session, day boundaries, awareness interval, appearance preference). Calendar events are read locally on each device — they never sync to the cloud. Made quietly by sthreelabs.

Screenshots

Underload3 screens
VisibleHour4 screens

Verdict

The call

The clearest difference is update cadence: VisibleHour at every 3 days against Underload's monthly. 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

CostPrice · In-app purchases · Ads · Monetization

Underload costs $4.99 and VisibleHour $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Underload ships an update monthly, VisibleHour every 3 days. The most recent releases landed on September 26, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
Underload versus VisibleHour: the parameters behind the verdict, then further details
ParameterUnderloadVisibleHour
Price$4.99$4.99
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, MaciPhone, iPad, Apple Watch, Vision Pro — better
Requires iOS17.0 — better18.0
Further details — not scored
Size2 MB8 MB
Age rating4+4+
DeveloperAnuradha Vellinenisthreelabs LLC

In-app purchases

None

Underload

No in-app purchases

None

VisibleHour

No in-app purchases

Questions

Is Underload free?
Underload costs $4.99, with no in-app purchases.
Is VisibleHour free?
VisibleHour costs $4.99, with no in-app purchases.
Do Underload or VisibleHour have ads?
Neither Underload nor VisibleHour shows ads.
Which is updated more often, Underload or VisibleHour?
Underload ships an update monthly, and VisibleHour every 3 days. Most recently, Underload was updated on September 26, 2026 and VisibleHour on October 3, 2026.

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