Study Timer Display vs Rostrum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Minimalist desk clock design
- Distraction-free environment
- Ideal for study sessions
- Suitable for homework time
- Useful for library use
- Enhances productivity
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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.
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.
- Silent visual countdown
- Customizable color stages
- Gesture-based editing
- External display mirroring
- Never dims screen
- Remembers settings
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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
Verdict
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
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.
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.
| Parameter | Study Timer Display | Rostrum |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 days | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 19 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | JAEMIN LEE | Scott GREER |
Customer experience
Study Timer Display
Rostrum
In-app purchases
Study Timer Display
No in-app purchases
Rostrum
No in-app purchases
Questions
Is Study Timer Display free?
Is Rostrum free?
Do Study Timer Display or Rostrum have ads?
Which is updated more often, Study Timer Display or Rostrum?
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