SchoolTool vs Noise Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SchoolTool
This app helps create a quiet learning environment with a visual noise warning light and a timer. It provides optical and acoustic feedback on volume levels and helps students grasp remaining work time.
- Noise warning light with optical and acoustic feedback
- Adjustable sensitivity for different groups
- Configurable warnings for noise limit breaches
- Visual timer for work phases
- Develops a sense of time in students
- Timer can be relative or absolute
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Intuitive. Effective. Engender a quiet working atmosphere and support your students while they concentrate on their work and complete their assignments effectively! Noise warning light: The noise warning light provides optical and acoustic feedback on the volume level in the classroom + Adapt the sensitivity to different study groups + Ask your students: the duration of downtime needed for evaluation can be varied. + Often a reminder is enough: Set warnings that remind them (as often as necessary) of breaches of the noise limits before a negative evaluation takes place + Save the settings for different situations or study groups! That way, you can switch, for example, between group and individual work phases. Visual Timer: The visual timer gives your pupils the possibility of grasping the remaining time for a work phase with just a glance + Train a sense of time into your students + Set the "direction" of the timer + The duration can be presented as relative or absolute (on a 60-minute scale) + Set whether an acoustic alarm is to sound at the end of the work phase
Noise Timer
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This application is both a timer and a volume meter. It measures the approximate volume in a selectable time period in minutes. The noise level is averaged and peaks are filtered out as far as possible. Advantages: + Any working time in minutes selectable + Optical and numerical timer + Volume display as level with color change (traffic light), numeric display and with matching emoji + Frequency of volume exceeding and percentage of them visible in time + Start, stop possible at any time + level corresponds approximately to dB + Filters out short bursts of noise like coughing, pencil dropping,... + For classroom and homeschooling + The children will be thrilled! Available for iPhone and iPad with iOS 13 and higher! Supports German and English language.
Screenshots
Verdict
The clearest difference is update cadence: SchoolTool at every 2 months against Noise Timer's every 16 months. Noise Timer's advantage is price ($6.99 vs $7.99) and iOS requirement (13.1 vs 16.0). On 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
SchoolTool costs $7.99 and Noise Timer $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SchoolTool ships an update every 2 months, Noise Timer every 16 months. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.
| Parameter | SchoolTool | Noise Timer |
|---|---|---|
| Price | $7.99 | $6.99 — better |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Oliver Kroeger | Werner Krause |
In-app purchases
SchoolTool
No in-app purchases
Noise Timer
No in-app purchases









