Comparison

Study Timer Display vs Rostrum

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

Head to head
About

Study Timer Display

Transform your device into a minimalist, distraction-free desk clock. Ideal for students and productivity environments, it helps maintain focus during study sessions and homework.

Highlights
  • Minimalist desk clock design
  • Distraction-free environment
  • Ideal for study sessions
  • Suitable for homework time
  • Useful for library use
  • Enhances productivity
Features
Read full description

Stay Focused & Study Better Turn your phone or tablet into a minimal, distraction-free desk clock designed for students. Perfect for study sessions, homework time, library use, and productivity environments.

About

Rostrum

This app provides a silent, visual countdown timer for speakers, with customizable color cues to indicate time remaining. It offers intuitive gesture controls for adjustments and can mirror the display to a larger screen.

Highlights
  • Silent visual countdown
  • Customizable color stages
  • Gesture-based editing
  • External display mirroring
  • Never dims screen
  • Remembers settings
Features
Read full description

Rostrum shows a speaker how much time is left, as a clock large enough to read from the back of the room — or from a phone propped on the podium. The background changes color at times you choose. Green while there's plenty left, amber when it's time to move on, red when it isn't. You decide how many stages there are and exactly when each one starts — most timers give you three fixed colors and no say in the matter. SILENT BY DESIGN No chimes. No alerts. No notifications. Not "sounds turned off by default" — Rostrum contains no code that can make a sound. Your audience never knows the timer is there. THE CLOCK IS THE CONTROL No buttons over your countdown. Tap to start or pause. Pause it and the clock becomes the editor: swipe with one finger to adjust seconds, two fingers for minutes, three for hours. A running clock refuses those swipes on purpose — a hand steadying the phone should not be able to rewrite a talk in progress. Pinch in to leave. A one-time overlay teaches the gestures, and a quiet line along the bottom of the clock keeps the key ones in view whenever the clock is stopped. Mid-talk, nothing but the time. BUILT FOR WHOEVER IS RUNNING THE ROOM Changing a talk length takes one tap. Set your common slot lengths once — 5, 15, 30, 45 minutes, whatever your event uses — and switch between speakers instantly. ON A BIG SCREEN WHEN YOU NEED IT Connect a display with AirPlay or USB-C and the clock fills it while your phone becomes the remote: start, pause, and adjust from your hand while the speaker watches the screen. WHEN TIME RUNS OUT The screen turns red and flashes briefly, then counts upward so a speaker can see exactly how far over they are. Impossible to miss, impossible to mistake for anything else. DETAILS THAT MATTER ON STAGE • The screen never dims while the clock is up • A phone call or a lock screen never stops the countdown — the full time is there when you come back • Digits never jitter or shift as the numbers change • Text color adapts automatically so it stays readable on any background • Remembers your setup between launches Also on the Mac App Store — one free app, both platforms. Free, with no purchases, no accounts, and no data collection of any kind. Rostrum has no network code — there is nowhere for your information to go.

Screenshots

Study Timer Display4 screens
Rostrum4 screens

Verdict

The call

The clearest difference is price: Rostrum at Free against Study Timer Display's $1.99. Rostrum also leads on update cadence (daily vs every 4 days). Study Timer Display's advantage is iOS requirement (13.0 vs 18.0). On review sentiment, 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

Rostrum is free to download; Study Timer Display costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Study Timer Display ships an update every 4 days, Rostrum daily. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Study Timer Display versus Rostrum: the parameters behind the verdict, then further details
ParameterStudy Timer DisplayRostrum
Price$1.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 4 daysDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better18.0
Further details — not scored
Size19 MB1 MB
Age rating4+4+
DeveloperJAEMIN LEEScott GREER

Customer experience

Study Timer Display

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Rostrum

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Study Timer Display

No in-app purchases

None

Rostrum

No in-app purchases

Questions

Is Study Timer Display free?
Study Timer Display costs $1.99, with no in-app purchases.
Is Rostrum free?
Rostrum is free to download, with no in-app purchases.
Do Study Timer Display or Rostrum have ads?
Neither Study Timer Display nor Rostrum shows ads.
Which is updated more often, Study Timer Display or Rostrum?
Study Timer Display ships an update every 4 days, and Rostrum daily. Most recently, Study Timer Display was updated on September 21, 2026 and Rostrum on September 23, 2026.

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