ERSB Lite vs Classroom Noise Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ERSB Lite
This app builds early reading skills for students progressing from foundational literacy. It uses systematic instruction and assessments to help individuals read independently, proving effective for those with intellectual disabilities and autism.
- Early literacy skill development
- Systematic instruction
- Ongoing assessments
- Progress to 2nd-grade reading level
- Effective for intellectual disabilities
- Effective for autism
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Note: This is the Free version of ERSB. Level 1 with 5 lessons is Free! The rest of the levels are available through the in-app store. Early Reading Skills Builder™(ERSB) curriculum, based on a multi-year research project from the University of North Carolina at Charlotte, is a stepping stone for graduates of Attainment’s ELSB Curriculum. ERSB takes students who mastered these early literacy skills to a 2nd grade reading level. It incorporates systematic instruction and ongoing assessments to teach students to read independently. It’s been proven effective for students with moderate to severe intellectual disability and/or autism, including those with complex communication needs.
Classroom Noise Meter
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Ruhe turns your iPad or iPhone into a friendly noise light for the classroom. A cheerful mascot shows at a glance how loud the room is – and quiet work gets rewarded instead of noise getting punished. HOW IT WORKS • Green: the mascot smiles – nice and quiet. • Yellow: it gently says “shh” – a little quieter, please. • Red: it covers its ears – and the flames go out. COLLECT FLAMES While the class stays quiet, one flame after another lights up around the mascot. Twelve flames complete the ring – time to celebrate! If it gets too loud, all flames go out. Only positive feedback, no scolding. MADE FOR LESSONS • Timer with ring display and start/stop button • Projector view: show the noise light full screen on a second display while you keep the controls • Adjustable sensitivity, or automatic calibration in 5 seconds • Lock the controls with Face ID so nobody in class changes anything • Light and dark appearance, screen stays on PRIVATE BY DESIGN Ruhe only measures the volume. Nothing is recorded, stored or sent. No account, no ads, no tracking. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://crabucate.de/ruhe-privacy.html
Screenshots
Verdict
The clearest difference is update cadence: Classroom Noise Meter at every 2 weeks against ERSB Lite's every 2 months. ERSB Lite's advantage is iOS requirement (13.0 vs 17.0). 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
Both are free to download. ERSB Lite sells 5 one-off in-app purchases and Classroom Noise Meter sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
ERSB Lite ships an update every 2 months, Classroom Noise Meter every 2 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | ERSB Lite | Classroom Noise Meter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 253 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Attainment Company | Felix Leitenberger |
In-app purchases
ERSB Lite
- Levels 12-16$29.99
- Levels 17-21$29.99
- Levels 22-26$29.99
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- Levels 2-6$29.99
- Levels 7-11$29.99
Classroom Noise Meter
- Ruhe Pro – Monthly3 Days trial$1.991 Month
- Ruhe Pro – Yearly7 Days trial$8.991 Year
- Ruhe Pro – Lifetime$22.99
Questions
Is ERSB Lite free?
Is Classroom Noise Meter free?
Do ERSB Lite or Classroom Noise Meter have ads?
Which is updated more often, ERSB Lite or Classroom Noise Meter?
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